1.125Gb: x18, x36 RLDRAM 3

1.125Gb: x18, x36 RLDRAM 3
Features
RLDRAM 3
MT44K64M18 – 4 Meg x 18 x 16 Banks
MT44K32M36 – 2 Meg x 36 x 16 Banks
Options1
Features
• Clock cycle and tRC timing
– 0.83ns and tRC (MIN) = 6.67ns
(RL3-2400)
– 0.83ns and tRC (MIN) = 7.5ns
(RL3-2400)
– 0.93ns and tRC (MIN) = 7.5ns
(RL3-2133)
– 0.93ns and tRC (MIN) = 8ns
(RL3-2133)
– 1.07ns and tRC (MIN) = 8ns
(RL3-1866)
• Configuration
– 64 Meg x 18
– 32 Meg x 36
• Operating temperature
– Commercial (TC = 0° to +95°C)
– Industrial (TC = –40°C to +95°C)
• Package
– 168-ball BGA (Pb-free)
• Revision
• 1200 MHz DDR operation (2400 Mb/s/ball data
rate)
• 86.4 Gb/s peak bandwidth (x36 at 1200 MHz clock
frequency)
• Organization
– 64 Meg x 18, and 32 Meg x 36 common I/O (CIO)
– 16 banks
• 1.2V center-terminated push/pull I/O
• 2.5V V EXT, 1.35V V DD, 1.2V V DDQ (optional 1.35V
VDDQ for 2400 operation only).
• Reduced cycle time (tRC (MIN) = 6.67 - 8ns)
• SDR addressing
• Programmable READ/WRITE latency (RL/WL) and
burst length
• Data mask for WRITE commands
• Differential input clocks (CK, CK#)
• Free-running differential input data clocks (DKx,
DKx#) and output data clocks (QKx, QKx#)
• On-die DLL generates CK edge-aligned data and
differential output data clock signals
• 64ms refresh (128K refresh per 64ms)
• 168-ball BGA package
• Ω or 60Ω matched impedance outputs
• Integrated on-die termination (ODT)
• Single or multibank writes
• Extended operating range (200–1200 MHz)
• READ training register
• Multiplexed and non-multiplexed addressing capabilities
• Mirror function
• Output driver and ODT calibration
• JTAG interface (IEEE 1149.1-2001)
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1.125Gb_rldram3.pdf – Rev. A 9/15 EN
Note:
1
Marking
-083F
-083E
-093F
-093E
-107E
64M18
32M36
None
IT
RB
:A
1. Not all options listed can be combined to
define an offered product. Use the part catalog search on www.micron.com for available offerings.
Micron Technology, Inc. reserves the right to change products or specifications without notice.
© 2015 Micron Technology, Inc. All rights reserved.
Products and specifications discussed herein are subject to change by Micron without notice.
1.125Gb: x18, x36 RLDRAM 3
Features
Figure 1: 1Gb RLDRAM® 3 Part Numbers
Example Part Number: MT44K32M36RB-093E:A
MT44K
Configuration Package
:
Speed Temp
Rev
Revision
:A
Rev. A
Configuration
64 Meg x 18
64M18
32 Meg x 36
32M36
Temperature
Commercial
None
Industrial
IT
Package
168-ball BGA (Pb-free)
Speed Grade
RB
-083F
tCK
= 0.83ns (6.67ns t RC)
-083E
tCK
= 0.83ns (7.5ns t RC)
-093F
tCK
= 0.93ns (7.5ns tRC)
-093E
tCK
= 0.93ns (8ns tRC)
-107E
tCK
= 1.07ns (8ns tRC)
BGA Part Marking Decoder
Due to space limitations, BGA-packaged components have an abbreviated part marking that is different from the
part number. Micron’s BGA Part Marking Decoder is available on Micron’s Web site at www.micron.com.
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1.125Gb: x18, x36 RLDRAM 3
Features
Contents
General Description ......................................................................................................................................... 9
General Notes .............................................................................................................................................. 9
State Diagram ................................................................................................................................................ 10
Functional Block Diagrams ............................................................................................................................. 11
Ball Assignments and Descriptions ................................................................................................................. 13
Package Dimensions ....................................................................................................................................... 17
Electrical Characteristics – IDD Specifications .................................................................................................. 18
Electrical Specifications – Absolute Ratings and I/O Capacitance ..................................................................... 22
Absolute Maximum Ratings ........................................................................................................................ 22
Input/Output Capacitance .......................................................................................................................... 22
AC and DC Operating Conditions .................................................................................................................... 23
AC Overshoot/Undershoot Specifications .................................................................................................... 25
Slew Rate Definitions for Single-Ended Input Signals ................................................................................... 28
Slew Rate Definitions for Differential Input Signals ...................................................................................... 30
ODT Characteristics ....................................................................................................................................... 31
ODT Resistors ............................................................................................................................................ 31
ODT Sensitivity .......................................................................................................................................... 33
Output Driver Impedance ............................................................................................................................... 33
Output Driver Sensitivity ............................................................................................................................ 34
Output Characteristics and Operating Conditions ............................................................................................ 36
Reference Output Load ............................................................................................................................... 39
Slew Rate Definitions for Single-Ended Output Signals ..................................................................................... 40
Slew Rate Definitions for Differential Output Signals ........................................................................................ 41
Speed Bin Tables ............................................................................................................................................ 42
AC Electrical Characteristics ........................................................................................................................... 43
Temperature and Thermal Impedance Characteristics ..................................................................................... 49
Command and Address Setup, Hold, and Derating ........................................................................................... 51
Data Setup, Hold, and Derating ....................................................................................................................... 58
Commands .................................................................................................................................................... 65
MODE REGISTER SET (MRS) Command ......................................................................................................... 66
Mode Register 0 (MR0) .................................................................................................................................... 67
tRC ............................................................................................................................................................. 68
Data Latency .............................................................................................................................................. 68
DLL Enable/Disable ................................................................................................................................... 68
Address Multiplexing .................................................................................................................................. 68
Mode Register 1 (MR1) .................................................................................................................................... 70
Output Drive Impedance ............................................................................................................................ 70
DQ On-Die Termination (ODT) ................................................................................................................... 70
DLL Reset ................................................................................................................................................... 70
ZQ Calibration ............................................................................................................................................ 71
ZQ Calibration Long ................................................................................................................................... 72
ZQ Calibration Short ................................................................................................................................... 72
AUTO REFRESH Protocol ............................................................................................................................ 73
Burst Length (BL) ....................................................................................................................................... 73
Mode Register 2 (MR2) .................................................................................................................................... 75
READ Training Register (RTR) ..................................................................................................................... 75
WRITE Protocol .......................................................................................................................................... 78
Post Package Repair – PPR .............................................................................................................................. 78
PPR Row Repair Sequence .......................................................................................................................... 78
WRITE Command .......................................................................................................................................... 80
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1.125Gb: x18, x36 RLDRAM 3
Features
Multibank WRITE ....................................................................................................................................... 80
READ Command ............................................................................................................................................ 81
AUTO REFRESH Command ............................................................................................................................ 83
INITIALIZATION Operation ............................................................................................................................ 85
WRITE Operation ........................................................................................................................................... 87
READ Operation ............................................................................................................................................. 91
AUTO REFRESH Operation ............................................................................................................................. 94
RESET Operation ............................................................................................................................................ 97
Clock Stop ...................................................................................................................................................... 98
Mirror Function ............................................................................................................................................. 99
Multiplexed Address Mode ............................................................................................................................. 100
Data Latency in Multiplexed Address Mode ................................................................................................ 105
REFRESH Command in Multiplexed Address Mode .................................................................................... 105
IEEE 1149.1 Serial Boundary Scan (JTAG) ....................................................................................................... 109
Disabling the JTAG Feature ........................................................................................................................ 109
Test Access Port (TAP) ................................................................................................................................ 109
TAP Controller ........................................................................................................................................... 110
Performing a TAP RESET ............................................................................................................................ 112
TAP Registers ............................................................................................................................................ 112
TAP Instruction Set .................................................................................................................................... 113
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1.125Gb: x18, x36 RLDRAM 3
Features
List of Figures
Figure 1: 1Gb RLDRAM® 3 Part Numbers ......................................................................................................... 2
Figure 2: Simplified State Diagram ................................................................................................................. 10
Figure 3: 64 Meg x 18 Functional Block Diagram ............................................................................................. 11
Figure 4: 32 Meg x 36 Functional Block Diagram ............................................................................................. 12
Figure 5: 168-Ball BGA ................................................................................................................................... 17
Figure 6: Single-Ended Input Signal ............................................................................................................... 24
Figure 7: Overshoot ....................................................................................................................................... 25
Figure 8: Undershoot .................................................................................................................................... 25
Figure 9: V IX for Differential Signals ................................................................................................................ 26
Figure 10: Single-Ended Requirements for Differential Signals ........................................................................ 27
Figure 11: Definition of Differential AC Swing and tDVAC ................................................................................ 27
Figure 12: Nominal Slew Rate Definition for Single-Ended Input Signals .......................................................... 29
Figure 13: Nominal Differential Input Slew Rate Definition for CK, CK#, DKx, and DKx# .................................. 30
Figure 14: ODT Levels and I-V Characteristics ................................................................................................ 31
Figure 15: Output Driver ................................................................................................................................ 34
Figure 16: DQ Output Signal .......................................................................................................................... 38
Figure 17: Differential Output Signal .............................................................................................................. 39
Figure 18: Reference Output Load for AC Timing and Output Slew Rate ........................................................... 39
Figure 19: Nominal Slew Rate Definition for Single-Ended Output Signals ....................................................... 40
Figure 20: Nominal Differential Output Slew Rate Definition for QKx, QKx# ..................................................... 41
Figure 21: Example Temperature Test Point Location ...................................................................................... 50
Figure 22: Nominal Slew Rate and tVAC for tIS (Command and Address – Clock) .............................................. 54
Figure 23: Nominal Slew Rate for tIH (Command and Address – Clock) ............................................................ 55
Figure 24: Tangent Line for tIS (Command and Address – Clock) ..................................................................... 56
Figure 25: Tangent Line for tIH (Command and Address – Clock) ..................................................................... 57
Figure 26: Nominal Slew Rate and tVAC for tDS (DQ – Strobe) .......................................................................... 61
Figure 27: Nominal Slew Rate for tDH (DQ – Strobe) ....................................................................................... 62
Figure 28: Tangent Line for tDS (DQ – Strobe) ................................................................................................. 63
Figure 29: Tangent Line for tDH (DQ – Strobe) ................................................................................................ 64
Figure 30: MRS Command Protocol ............................................................................................................... 66
Figure 31: MR0 Definition for Non-Multiplexed Address Mode ........................................................................ 67
Figure 32: MR1 Definition for Non-Multiplexed Address Mode ........................................................................ 70
Figure 33: ZQ Calibration Timing (ZQCL and ZQCS) ....................................................................................... 72
Figure 34: Read Burst Lengths ........................................................................................................................ 74
Figure 35: MR2 Definition for Non-Multiplexed Address Mode ........................................................................ 75
Figure 36: READ Training Function - Back-to-Back Readout ............................................................................ 77
Figure 37: Entry, Repair, and Exit Timing Diagram .......................................................................................... 79
Figure 38: WRITE Command ......................................................................................................................... 80
Figure 39: READ Command ........................................................................................................................... 82
Figure 40: Bank Address-Controlled AUTO REFRESH Command ..................................................................... 83
Figure 41: Multibank AUTO REFRESH Command ........................................................................................... 84
Figure 42: Power-Up/Initialization Sequence ................................................................................................. 86
Figure 43: WRITE Burst ................................................................................................................................. 87
Figure 44: Consecutive WRITE Bursts ............................................................................................................. 88
Figure 45: WRITE-to-READ ............................................................................................................................ 88
Figure 46: WRITE - DM Operation .................................................................................................................. 89
Figure 47: Consecutive Quad Bank WRITE Bursts ........................................................................................... 89
Figure 48: Interleaved READ and Quad Bank WRITE Bursts ............................................................................. 90
Figure 49: Basic READ Burst .......................................................................................................................... 91
Figure 50: Consecutive READ Bursts (BL = 2) .................................................................................................. 92
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1.125Gb: x18, x36 RLDRAM 3
Features
Figure 51:
Figure 52:
Figure 53:
Figure 54:
Figure 55:
Figure 56:
Figure 57:
Figure 58:
Figure 59:
Figure 60:
Figure 61:
Figure 62:
Figure 63:
Figure 64:
Figure 65:
Figure 66:
Figure 67:
Figure 68:
Figure 69:
Figure 70:
Figure 71:
Figure 72:
Figure 73:
Consecutive READ Bursts (BL = 4) .................................................................................................. 92
READ-to-WRITE (BL = 2) ............................................................................................................... 93
Read Data Valid Window ................................................................................................................ 93
Bank Address-Controlled AUTO REFRESH Cycle ............................................................................. 94
Multibank AUTO REFRESH Cycle ................................................................................................... 94
READ Burst with ODT .................................................................................................................... 95
READ-NOP-READ with ODT .......................................................................................................... 96
RESET Sequence ........................................................................................................................... 97
Command Description in Multiplexed Address Mode .................................................................... 100
Power-Up/Initialization Sequence in Multiplexed Address Mode .................................................... 101
MR0 Definition for Multiplexed Address Mode ............................................................................... 102
MR1 Definition for Multiplexed Address Mode ............................................................................... 103
MR2 Definition for Multiplexed Address Mode ............................................................................... 104
Bank Address-Controlled AUTO REFRESH Operation with Multiplexed Addressing ......................... 105
Multibank AUTO REFRESH Operation with Multiplexed Addressing ............................................... 106
Consecutive WRITE Bursts with Multiplexed Addressing ................................................................ 106
WRITE-to-READ with Multiplexed Addressing ............................................................................... 107
Consecutive READ Bursts with Multiplexed Addressing .................................................................. 107
READ-to-WRITE with Multiplexed Addressing ............................................................................... 108
TAP Controller State Diagram ........................................................................................................ 111
TAP Controller Functional Block Diagram ..................................................................................... 111
JTAG Operation – Loading Instruction Code and Shifting Out Data ................................................. 115
TAP Timing .................................................................................................................................. 116
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1.125Gb: x18, x36 RLDRAM 3
Features
List of Tables
Table 1: 64 Meg x 18 Ball Assignments – 168-Ball BGA (Top View) .................................................................... 13
Table 2: 32 Meg x 36 Ball Assignments – 168-Ball BGA (Top View) .................................................................... 14
Table 3: Ball Descriptions .............................................................................................................................. 15
Table 4: IDD Operating Conditions and Maximum Limits ................................................................................ 18
Table 5: Absolute Maximum Ratings .............................................................................................................. 22
Table 6: Input/Output Capacitance ................................................................................................................ 22
Table 7: DC Electrical Characteristics and Operating Conditions ..................................................................... 23
Table 8: Input AC Logic Levels ........................................................................................................................ 23
Table 9: Control and Address Balls ................................................................................................................. 25
Table 10: Clock, Data, Strobe, and Mask Balls ................................................................................................. 25
Table 11: Differential Input Operating Conditions (CK, CK# and DKx, DKx#) ................................................... 26
Table 12: Allowed Time Before Ringback ( tDVAC) for CK, CK#, DKx, and DKx# ................................................. 28
Table 13: Single-Ended Input Slew Rate Definition .......................................................................................... 28
Table 14: Differential Input Slew Rate Definition ............................................................................................. 30
Table 15: ODT DC Electrical Characteristics ................................................................................................... 31
Table 16: RTT Effective Impedances ................................................................................................................ 32
Table 17: ODT Sensitivity Definition .............................................................................................................. 33
Table 18: ODT Temperature and Voltage Sensitivity ........................................................................................ 33
Table 19: Driver Pull-Up and Pull-Down Impedance Calculations ................................................................... 34
Table 20: Output Driver Sensitivity Definition ................................................................................................. 35
Table 21: Output Driver Voltage and Temperature Sensitivity .......................................................................... 35
Table 22: Single-Ended Output Driver Characteristics ..................................................................................... 36
Table 23: Differential Output Driver Characteristics ........................................................................................ 37
Table 24: Single-Ended Output Slew Rate Definition ....................................................................................... 40
Table 25: Differential Output Slew Rate Definition .......................................................................................... 41
Table 26: RL3 2400/2133/1866 Speed Bins ...................................................................................................... 42
Table 27: AC Electrical Characteristics ............................................................................................................ 43
Table 28: Temperature Limits ......................................................................................................................... 49
Table 29: Thermal Impedance ........................................................................................................................ 50
Table 30: Command and Address Setup and Hold Values Referenced at 1 V/ns – AC/DC-Based ........................ 51
Table 31: Derating Values for tIS/tIH – AC150/DC100-Based ............................................................................ 52
Table 32: Derating Values for tIS/tIH – AC135/DC100-Based ............................................................................ 52
Table 33: Derating Values for tIS/tIH – AC120/DC100-Based ............................................................................ 53
Table 34: Minimum Required Time tVAC Above V IH(AC) (or Below V IL(AC)) for Valid Transition ............................ 53
Table 35: Data Setup and Hold Values (DKx, DKx# at 2 V/ns) – AC/DC-Based ................................................... 58
Table 36: Derating Values for tDS/tDH – AC150/DC100-Based ......................................................................... 59
Table 37: Derating Values for tDS/tDH – AC135/DC100-Based ......................................................................... 59
Table 38: Derating Values for tDS/tDH – AC120/DC100-Based ......................................................................... 60
Table 39: Minimum Required Time tVAC Above V IH(AC) (or Below V IL(AC)) for Valid Transition ............................ 60
Table 40: Command Descriptions .................................................................................................................. 65
Table 41: Command Table ............................................................................................................................. 65
Table 42: tRC_MRS MR0[3:0] Values ............................................................................................................... 68
Table 43: Address Widths of Different Burst Lengths ....................................................................................... 73
Table 44: RLDRAM3 PPR Timing Parameters .................................................................................................. 79
Table 45: 64 Meg x 18 Ball Assignments with MF Ball Tied HIGH ...................................................................... 99
Table 46: Address Mapping in Multiplexed Address Mode .............................................................................. 104
Table 47: TAP Input AC Logic Levels .............................................................................................................. 116
Table 48: TAP AC Electrical Characteristics .................................................................................................... 116
Table 49: TAP DC Electrical Characteristics and Operating Conditions ............................................................ 117
Table 50: Scan Register Sizes ......................................................................................................................... 117
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1.125Gb: x18, x36 RLDRAM 3
Features
Table 51:
Table 52:
Table 53:
Table 54:
Table 55:
Instruction Codes .......................................................................................................................... 118
Identification (ID) Code Definition ................................................................................................. 118
MR0_MR1 Mode Register Settings Definition .................................................................................. 118
MR2 Mode Register Settings Definition ........................................................................................... 119
Boundary Scan (Exit) ..................................................................................................................... 120
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1.125Gb: x18, x36 RLDRAM 3
General Description
General Description
The Micron® RLDRAM® 3 is a high-speed memory device designed for high-bandwidth
data storage—telecommunications, networking, cache applications, and so forth. The
chip’s 16-bank architecture is optimized for sustainable high-speed operation.
The DDR I/O interface transfers two data bits per clock cycle at the I/O balls. Output
data is referenced to the READ strobes.
Commands, addresses, and control signals are also registered at every positive edge of
the differential input clock, while input data is registered at both positive and negative
edges of the input data strobes.
Read and write accesses to the RL3 device are burst-oriented. The burst length (BL) is
programmable to 2, 4, or 8 by a setting in the mode register.
The device is supplied with 1.35V for the core and 1.2V for the output drivers. The 2.5V
supply is used for an internal supply.
Bank-scheduled refresh is supported with the row address generated internally.
The 168-ball BGA package is used to enable ultra-high-speed data transfer rates.
General Notes
• The functionality and the timing specifications discussed in this data sheet are for the
DLL enable mode of operation.
• Any functionality not specifically stated is considered undefined, illegal, and not supported, and can result in unknown operation.
• Nominal conditions are assumed for specifications not defined within the figures
shown in this data sheet.
• Throughout this data sheet, the terms "RLDRAM," "DRAM,” and "RLDRAM 3" are all
used interchangeably and refer to the RLDRAM 3 SDRAM device.
• References to DQ, DK, QK, DM, and QVLD are to be interpreted as each group collectively, unless specifically stated otherwise. This includes true and complement signals
of differential signals.
• Non-multiplexed operation is assumed if not specified as multiplexed.
• A x36 device supplies four QK/QK# sets, one per nine DQ. Using only two QK/QK#
sets is allowed, but QK0/QK0# and QK1/QK1# must be used. QK0/QK0# control
DQ[8:0] and DQ[26:18], and QK1/QK1# control DQ[17:9] and DQ[35:27]. The QK to
DQ timing parameter to be used is tQKQ02, tQKQ13. The unused QK/QK# pins should
be left floating.
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1.125Gb: x18, x36 RLDRAM 3
State Diagram
State Diagram
Figure 2: Simplified State Diagram
Initialization
sequence
NOP
READ
WRITE
RESET#
MRS
AREF
Automatic sequence
Command sequence
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Functional Block Diagrams
Figure 3: 64 Meg x 18 Functional Block Diagram
ZQ
ZQ CAL
ZQ CAL
RZQ
ZQCL, ZQCS
ODT control
CK
CK#
Command
decode
CS#
REF#
WE#
Control
logic
VDDQ/2
Bank 15
Bank 14
RTT
MF
RESET#
Mode register
Refresh
counter
25
ODT control
Bank 1
Bank 0
13
Rowaddress
MUX
13
14
Bank 0
rowaddress
latch
and
decoder
16384
DLL
ZQ CAL
18
11
18
144
SENSE
AMPLIFIERS
Sense amplifiers
READ n
logic
n
18
DQ
latch
4
144
Address
register
Bank
control
logic
4
VDDQ/2
2
RTT
16
ODT control
32
18
5
8
TCK
TMS
TDI
JTAG
Logic and
Boundary
Scan Register
71
Column
decoder
WRITE
FIFO
and
drivers
CLK
in
71
(0...3)
RCVRS
18
18
Input
logic
144
Columnaddress
counter/
latch
DQ[17:0]
1
I/O gating
DQM mask logic
16
QK0/QK0#,QK1/QK1#
4
DK0/DK0#, DK1/DK1#
VDDQ/2
RTT
21
ODT control
2
DM[1:0]
TDO
Notes:
1. Example for BL = 2; column address will be reduced with an increase in burst length.
2. 8 = (length of burst) x 2^ (number of column addresses to WRITE FIFO and READ logic).
1.125Gb: x18, x36 RLDRAM 3
Functional Block Diagrams
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25
QVLD
READ
Drivers
QK/QK#
generator
16384
A[20:0]1
BA[3:0]
(0 ....17)
CK/CK#
Bank 0
memory
array
(16384 x 32 x 8 x 18)2
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1.125Gb_rldram3.pdf – Rev. A 9/15 EN
Functional Block Diagrams
Figure 4: 32 Meg x 36 Functional Block Diagram
ZQ
ZQ CAL
ZQ CAL
RZQ
ZQCL, ZQCS
ODT control
CK
CK#
Command
decode
CS#
REF#
WE#
Control
logic
VDDQ/2
Bank 15
Bank 14
RTT
MF
RESET#
Refresh
counter
Mode register
24
ODT control
Bank 1
Bank 0
13
Rowaddress
MUX
13
14
Bank 0
rowaddress
latch
and
decoder
16384
36
12
36
144
READ n
logic
n
36
READ
Drivers
DQ
latch
4
16
ODT control
(0...3)
16
4
32
8
TCK
TMS
TDI
JTAG
Logic and
Boundary
Scan Register
61
Column
decoder
WRITE
FIFO
and
drivers
CLK
in
61
36
36
36
DK0/DK0#, DK1/DK1#
RCVRS
Input
logic
144
5
Columnaddress
counter/
latch
DQ[35:0]
RTT
11
I/O gating
DQM mask logic
VDDQ/2
RTT
11
ODT control
2
DM[1:0]
TDO
Notes:
1. Example for BL = 2; column address will be reduced with an increase in burst length.
2. 4 = (length of burst) x 2^ (number of column addresses to WRITE FIFO and READ logic).
1.125Gb: x18, x36 RLDRAM 3
Functional Block Diagrams
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Bank
control
logic
QK0/QK0#, QK1/QK1#
QK2/QK2#, QK3/QK3#
VDDQ/2
144
Address
register
QVLD[1:0]
8
QK/QK#
generator
16384
24
DLL
ZQ CAL
SENSEamplifiers
AMPLIFIERS
Sense
A[19:0]1
BA[3:0]
(0 ....35)
CK/CK#
Bank 0
memory
array
(16384 x 32 x 4 x 36) 2
1.125Gb: x18, x36 RLDRAM 3
Ball Assignments and Descriptions
Ball Assignments and Descriptions
Table 1: 64 Meg x 18 Ball Assignments – 168-Ball BGA (Top View)
1
A
2
3
4
5
6
7
8
9
10
11
12
13
VSS
VDD
NF
VDDQ
NF
VREF
DQ7
VDDQ
DQ8
VDD
VSS
RESET#
B
VEXT
VSS
NF
VSSQ
NF
VDDQ
DM0
VDDQ
DQ5
VSSQ
DQ6
VSS
VEXT
C
VDD
NF
VDDQ
NF
VSSQ
NF
DK0#
DQ2
VSSQ
DQ3
VDDQ
DQ4
VDD
D
A11
VSSQ
NF
VDDQ
NF
VSSQ
DK0
VSSQ
QK0
VDDQ
DQ0
VSSQ
A13
E
VSS
A0
VSSQ
NF
VDDQ
NF
MF
QK0#
VDDQ
DQ1
VSSQ
CS#
VSS
F
A7
A20
VDD
A2
A1
WE#
ZQ
REF#
A3
A4
VDD
A5
A9
G
VSS(RFU)1
A15
A6
VSS
BA1
VSS
CK#
VSS
BA0
VSS
A8
A18
VSS(CS1#)2
H
A19
VDD
A14
A16
VDD
BA3
CK
BA2
VDD
A17
A12
VDD
A10
J
VDDQ
NF
VSSQ
NF
VDDQ
NF
VSS
QK1#
VDDQ
DQ9
VSSQ
QVLD
VDDQ
K
NF
VSSQ
NF
VDDQ
NF
VSSQ
DK1
VSSQ
QK1
VDDQ
DQ10
VSSQ
DQ11
L
VDD
NF
VDDQ
NF
VSSQ
NF
DK1#
DQ12
VSSQ
DQ13
VDDQ
DQ14
VDD
M
VEXT
VSS
NF
VSSQ
NF
VDDQ
DM1
VDDQ
DQ15
VSSQ
DQ16
VSS
VEXT
N
VSS
TCK
VDD
TDO
VDDQ
NF
VREF
DQ17
VDDQ
TDI
VDD
TMS
VSS
Notes:
PDF: 09005aef85a88362
1.125Gb_rldram3.pdf – Rev. A 9/15 EN
1. Reserved for future use (RFU) is being identified as the location to handle possible future density increases and is the mirror function location of the 2Gb X18 DDP (CS1#) pin.
Has parasitic characteristics of an address pin.
2. Location of the additional signal (CS1#) required for the 2Gb x18 DDP configuration.
Has parasitic characteristics of an address pin.
3. NF balls for the x18 configuration are internally connected and have parasitic characteristics of an I/O. Balls may be connected to VSSQ.
4. MF is assumed to be tied LOW for this ball assignment.
13
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1.125Gb: x18, x36 RLDRAM 3
Ball Assignments and Descriptions
Table 2: 32 Meg x 36 Ball Assignments – 168-Ball BGA (Top View)
1
A
2
3
4
5
6
7
8
9
10
11
12
13
VSS
VDD
DQ26
VDDQ
DQ25
VREF
DQ7
VDDQ
DQ8
VDD
VSS
RESET#
B
VEXT
VSS
DQ24
VSSQ
DQ23
VDDQ
DM0
VDDQ
DQ5
VSSQ
DQ6
VSS
VEXT
C
VDD
DQ22
VDDQ
DQ21
VSSQ
DQ20
DK0#
DQ2
VSSQ
DQ3
VDDQ
DQ4
VDD
D
A11
VSSQ
DQ18
VDDQ
QK2
VSSQ
DK0
VSSQ
QK0
VDDQ
DQ0
VSSQ
A13
E
VSS
A0
VSSQ
DQ19
VDDQ
QK2#
MF
QK0#
VDDQ
DQ1
VSSQ
CS#
VSS
F
A7
VDD
A2
A1
WE#
ZQ
REF#
A3
A4
VDD
A5
A9
G
VSS
NF
A15
A6
VSS
BA1
VSS
CK#
VSS
BA0
VSS
A8
A18
VSS
H
A19
VDD
A14
A16
VDD
BA3
CK
BA2
VDD
A17
A12
VDD
A10
J
VDDQ
QVLD1
VSSQ
DQ27
VDDQ
QK3#
VSS
QK1#
VDDQ
DQ9
VSSQ
QVLD0
VDDQ
K
DQ29
VSSQ
DQ28
VDDQ
QK3
VSSQ
DK1
VSSQ
QK1
VDDQ
DQ10
VSSQ
DQ11
L
VDD
DQ32
VDDQ
DQ31
VSSQ
DQ30
DK1#
DQ12
VSSQ
DQ13
VDDQ
DQ14
VDD
M
VEXT
VSS
DQ34
VSSQ
DQ33
VDDQ
DM1
VDDQ
DQ15
VSSQ
DQ16
VSS
VEXT
N
VSS
TCK
VDD
TDO
VDDQ
DQ35
VREF
DQ17
VDDQ
TDI
VDD
TMS
VSS
(A20)1
Notes:
PDF: 09005aef85a88362
1.125Gb_rldram3.pdf – Rev. A 9/15 EN
1. This ball is NF for SDP 1Gb x36 configuration but becomes A20 for DDP 2Gb x 36 configuration. Has parasitic characteristics of an address pin.
2. NF ball for x36 configuration is internally connected and has parasitic characteristics of
an address. Ball may be connected to VSSQ.
3. MF is assumed to be tied LOW for this ball assignment.
14
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1.125Gb: x18, x36 RLDRAM 3
Ball Assignments and Descriptions
Table 3: Ball Descriptions
Symbol
Type
Description
A[20:0]
Input
Address inputs: A[20:0] define the row and column addresses for READ and WRITE operations.
During a MODE REGISTER SET, the address inputs define the register settings along with BA[3:0].
They are sampled at the rising edge of CK.
BA[3:0]
Input
Bank address inputs: Select the internal bank to which a command is being applied.
CK/CK#
Input
Input clock: CK and CK# are differential input clocks. Addresses and commands are latched on
the rising edge of CK.
CS#
Input
Chip select: CS# enables the command decoder when LOW and disables it when HIGH. When
the command decoder is disabled, new commands are ignored, but internal operations continue.
DQ[35:0]
I/O
Data input: The DQ signals form the 36-bit data bus. During READ commands, the data is referenced to both edges of QK. During WRITE commands, the data is sampled at both edges of DK.
DKx, DKx#
Input
Input data clock: DKx and DKx# are differential input data clocks. All input data is referenced
to both edges of DKx. For the x36 device, DQ[8:0] and DQ[26:18] are referenced to DK0 and
DK0#, and DQ[17:9] and DQ[35:27] are referenced to DK1 and DK1#. For the x18 device, DQ[8:0]
are referenced to DK0 and DK0#, and DQ[17:9] are referenced to DK1 and DK1#. DKx and DKx#
are free-running signals and must always be supplied to the device.
DM[1:0]
Input
Input data mask: DM is the input mask signal for WRITE data. Input data is masked when DM
is sampled HIGH. DM0 is used to mask the lower byte for the x18 device and DQ[8:0] and
DQ[26:18] for the x36 device. DM1 is used to mask the upper byte for the x18 device and
DQ[17:9] and DQ[35:27] for the x36 device. Tie DM[1:0] to VSS if not used.
TCK
Input
IEEE 1149.1 clock input: This ball must be tied to VSS if the JTAG function is not used.
TMS, TDI
Input
IEEE 1149.1 test inputs: These balls may be left as no connects if the JTAG function is not used.
WE#, REF#
Input
Command inputs: Sampled at the positive edge of CK, WE#, and REF# (together with CS#) define the command to be executed.
RESET#
Input
Reset: RESET# is an active LOW CMOS input referenced to VSS. RESET# assertion and deassertion
are asynchronous. RESET# is a CMOS input defined with DC HIGH ≥ 0.8 x VDDQ and DC LOW ≤ 0.2
x VDDQ.
ZQ
Input
External impedance: This signal is used to tune the device’s output impedance and ODT. RZQ
needs to be 240Ω, where RZQ is a resistor from this signal to ground.
QKx, QKx#
Output
Output data clocks: QK and QK# are opposite-polarity output data clocks. They are free-running signals and during READ commands are edge-aligned with the DQs. For the x36 device,
QK0, QK0# align with DQ[8:0]; QK1, QK1# align with DQ[17:9]; QK2, QK2# align with DQ[26:18];
QK3, QK3# align with DQ[35:27]. For the x18 device, QK0, QK0# align with DQ[8:0]; QK1, QK1#
align with DQ[17:9].
QVLDx
Output
Data valid: The QVLD ball indicates that valid output data will be available on the subsequent
rising clock edge. There is a single QVLD ball for the x18 device and two, QVLD0 and QVLD1, for
the x36 device. QVLD0 aligns with DQ[17:0]; QVLD1 aligns with DQ[35:18].
MF
Input
Mirror function: The mirror function ball is a DC input used to create mirrored ballouts for simple dual-loaded clamshell mounting. If the ball is tied to VSS, the address and command balls are
in their true layout. If the ball is tied to VDDQ, they are in the complement location. MF must be
tied HIGH or LOW and cannot be left floating.
TDO
Output
IEEE 1149.1 test output: JTAG output. This ball may be left as no connect if the JTAG function
is not used.
PDF: 09005aef85a88362
1.125Gb_rldram3.pdf – Rev. A 9/15 EN
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1.125Gb: x18, x36 RLDRAM 3
Ball Assignments and Descriptions
Table 3: Ball Descriptions (Continued)
Symbol
Type
VDD
Supply
Power supply: 1.35V nominal. See AC and DC Operating Conditions (page 23) for range.
VDDQ
Supply
DQ power supply: 1.2V or 1.35V nominal. 1.2V can be used for all speed grades. The 1.35V can
only be used for 2400 Mb/s operation if required tp close timing. Isolated on the device for improved noise immunity. See AC and DC Operating Conditions (page 23) for range.
VEXT
Supply
Power supply: 2.5V nominal. See AC and DC Operating Conditions (page 23) for range.
VREF
Supply
Input reference voltage: VDDQ/2 nominal. Provides a reference voltage for the input buffers.
VSS
Supply
Ground.
VSSQ
Supply
DQ ground: Isolated on the device for improved noise immunity.
NC
–
No connect: These balls are not connected to the DRAM.
NF
–
No function: These balls are connected to the DRAM but provide no functionality.
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1.125Gb_rldram3.pdf – Rev. A 9/15 EN
Description
16
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1.125Gb: x18, x36 RLDRAM 3
Package Dimensions
Package Dimensions
Figure 5: 168-Ball BGA
Seating plane
A
168X Ø0.55
Dimensions apply
to solder balls postreflow on Ø0.40 NSMD
ball pads.
0.12 A
Ball A1 ID
(covered by SR)
13 12
11 10
9
8
7
6
5
4
3
2
Ball A1 ID
1
A
B
C
D
13.5 ±0.1
E
F
G
12 CTR
H
J
K
L
M
1 TYP
N
1 TYP
1.1 ±0.1
12 CTR
0.3 MIN
13.5 ±0.1
Notes:
PDF: 09005aef85a88362
1.125Gb_rldram3.pdf – Rev. A 9/15 EN
1. All dimensions are in millimeters.
2. Solder ball material: SAC302 (96.8% Sn, 3% Ag, 0.2% Cu).
17
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© 2015 Micron Technology, Inc. All rights reserved.
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1.125Gb_rldram3.pdf – Rev. A 9/15 EN
Electrical Characteristics – IDD Specifications
Table 4: IDD Operating Conditions and Maximum Limits
Notes 1–6 apply to the entire table
Description
Condition
Standby
current
tCK
Clock active standby current
CS# = 1; No commands; Bank address incremented and half address/data change once
every four clock cycles
BL = 2; Sequential bank access; Bank transitions once every tRC; Half address transitions
once every tRC; Read followed by write sequence; Continuous data during WRITE commands
Operational
current: BL2
18
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Operational
current: BL8
Burst refresh
current
Distributed
refresh current
BL = 4; Sequential bank access; Bank transitions once every tRC; Half address transitions
once every tRC; Read followed by write sequence; Continuous data during WRITE commands
BL = 8; Sequential bank access; Bank transitions once every tRC; Half address transitions
once every tRC; Read followed by write sequence; Continuous data during WRITE commands
Sixteen bank cyclic refresh using Bank Address Control AREF protocol; Command bus
remains in refresh for all sixteen banks; DQs
are High-Z and at VDDQ/2; Addresses are at
VDDQ/2
Single bank refresh using Bank Address Control AREF protocol; Sequential bank access
every 0.489μs; DQs are High-Z and at VDDQ/2;
Addresses are at VDDQ/2
Symbol
-083F
-083E
-093F
-093E
-107E
ISB1 (VDD) x18
TBD
TBD
225
225
225
ISB1 (VDD) x36
TBD
TBD
225
225
225
ISB1 (VEXT)
TBD
TBD
55
55
55
ISB2 (VDD) x18
TBD
TBD
605
605
570
ISB2 (VDD) x36
TBD
TBD
625
625
585
ISB2 (VEXT)
TBD
TBD
55
55
55
IDD1 (VDD) x18
TBD
TBD
1105
1040
975
IDD1 (VDD) x36
TBD
TBD
1115
1050
985
IDD1 (VEXT)
TBD
TBD
60
60
60
IDD2 (VDD) x18
TBD
TBD
1200
1130
1060
IDD2 (VDD) x36
TBD
TBD
1210
1140
1070
IDD2 (VEXT)
TBD
TBD
60
60
60
IDD3 (VDD) x18
TBD
TBD
1160
1095
1015
IDD3 (VDD) x36
NA
NA
NA
NA
NA
IDD3 (VEXT)
TBD
TBD
60
60
60
IREF1 (VDD) x18
TBD
TBD
1135
1135
1025
IREF1 (VDD) x36
TBD
TBD
1150
1150
1040
IREF1 (VEXT)
TBD
TBD
115
115
110
IREF2 (VDD) x18
TBD
TBD
580
580
540
IREF2 (VDD) x36
TBD
TBD
595
595
555
IREF2 (VEXT)
TBD
TBD
55
55
55
Units
mA
mA
mA
mA
mA
mA
mA
1.125Gb: x18, x36 RLDRAM 3
Electrical Characteristics – IDD Specifications
Operational
current: BL4
= idle; All banks idle; No inputs toggling
PDF: 09005aef85a88362
1.125Gb_rldram3.pdf – Rev. A 9/15 EN
Table 4: IDD Operating Conditions and Maximum Limits (Continued)
Notes 1–6 apply to the entire table
Description
Condition
Multibank refresh
current:
4 bank refresh
Quad bank refresh using Multibank AREF
protocol; BL = 4; Cyclic bank access; Subject
to tSAW and tMMD specifications; DQs are
High-Z and at VDDQ/2; Bank addresses are at
VDDQ/2
Operating burst
write current : BL2
Symbol
-083F
-083E
-093F
-093E
-107E
TBD
TBD
1490
1490
1420
TBD
TBD
1510
1510
1435
IMBREF4 (VEXT)
TBD
TBD
185
185
165
BL = 2; Cyclic bank access; Half of address
bits change every clock cycle; Continuous data; Measurement is taken during continuous
WRITE
IDD2W (VDD) x18
TBD
TBD
1655
1655
1500
IDD2W (VDD) x36
TBD
TBD
1810
1810
1635
IDD2W (VEXT)
TBD
TBD
70
70
65
BL = 4; Cyclic bank access; Half of address
bits change every two clock cycles; Continuous data; Measurement is taken during continuous WRITE
IDD4W (VDD) x18
TBD
TBD
1515
1515
1395
IDD4W (VDD) x36
TBD
TBD
1595
1595
1465
IDD4W (VEXT)
TBD
TBD
90
90
90
BL = 8; Cyclic bank access; Half of address
bits change every four clock cycles; Continuous data; Measurement is taken during continuous WRITE
IDD8W (VDD) x18
TBD
TBD
1140
1140
1040
IDD8W (VDD) x36
NA
NA
NA
NA
NA
IDD8W (VEXT)
TBD
TBD
70
70
65
Multibank write
current:
Dual bank write
BL = 4; Cyclic bank access using Dual Bank
WRITE; Half of address bits change every
two clock cycles; Continuous data; Measurement is taken during continuous WRITE
IDBWR (VDD) x18
TBD
TBD
2005
2005
1890
IDBWR (VDD) x36
TBD
TBD
2090
2090
1960
IDBWR (VEXT)
TBD
TBD
115
115
110
Multibank write
current:
Quad bank write
BL = 4; Cyclic bank access using Quad Bank
WRITE; Half of address bits change every
two clock cycles; Continuous data; Measurement is taken during continuous WRITE;
Subject to tSAW specification
IQBWR (VDD) x18
TBD
TBD
2620
2620
2565
IQBWR (VDD) x36
TBD
TBD
2840
2840
2665
IQBWR (VEXT)
TBD
TBD
200
200
175
Operating burst
read current
example
BL = 2; Cyclic bank access; Half of address
bits change every clock cycle; Continuous data; Measurement is taken during continuous
READ
IDD2R (VDD) x18
TBD
TBD
1715
1715
1560
IDD2R (VDD) x36
TBD
TBD
1835
1835
1670
IDD2R (VEXT)
TBD
TBD
70
70
65
Operating burst
read current
example
BL = 4; Cyclic bank access; Half of address
bits change every two clock cycles; Continuous data; Measurement is taken during continuous READ
IDD4R (VDD) x18
TBD
TBD
1510
1510
1380
IDD4R (VDD) x36
TBD
TBD
1595
1595
1465
IDD4R (VEXT)
TBD
TBD
90
90
90
Operating burst
write current : BL4
Operating burst
write current :BL8
mA
mA
mA
mA
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mA
mA
mA
mA
1.125Gb: x18, x36 RLDRAM 3
Electrical Characteristics – IDD Specifications
IMBREF4 (VDD) x18
IMBREF4 (VDD) x36
Units
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1.125Gb_rldram3.pdf – Rev. A 9/15 EN
Table 4: IDD Operating Conditions and Maximum Limits (Continued)
Notes 1–6 apply to the entire table
Description
Condition
Operating burst
read current
example
BL = 8; Cyclic bank access; Half of address
bits change every four clock cycles; Continuous data; Measurement is taken during continuous READ
Symbol
-083F
-083E
-093F
-093E
-107E
IDD8R (VDD) x18
TBD
TBD
1135
1135
1040
IDD8R (VDD) x36
NA
NA
NA
NA
NA
IDD8R (VEXT)
TBD
TBD
70
70
65
Units
mA
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1.125Gb: x18, x36 RLDRAM 3
Electrical Characteristics – IDD Specifications
20
1.125Gb: x18, x36 RLDRAM 3
Electrical Characteristics – IDD Specifications
Notes:
1. IDD specifications are tested after the device is properly initialized. 0°C ≤ TC ≤ +95°C;
+1.28V ≤ VDD ≤ +1.42V, +1.14V ≤ VDDQ ≤ +1.26V, +2.38V ≤ VEXT ≤ +2.63V, VREF = VDDQ/2.
2. IDD mesurements use tCK (MIN), tRC (MIN), and minimum data latency (RL and WL).
3. Input slew rate is 1 V/ns for single ended signals and 2 V/ns for differential signals.
4. Definitions for IDD conditions:
• LOW is defined as VIN ≤ VIL(AC)MAX.
• HIGH is defined as VIN ≥ VIH(AC)MIN.
• Continuous data is defined as half the DQ signals changing between HIGH and LOW
every half clock cycle (twice per clock).
• Continuous address is defined as half the address signals changing between HIGH and
LOW every clock cycle (once per clock).
• Sequential bank access is defined as the bank address incrementing by one every tRC.
• Cyclic bank access is defined as the bank address incrementing by one for each command access. For BL = 2 this is every clock, for BL = 4 this is every other clock, and for
BL = 8 this is every fourth clock.
5. CS# is HIGH unless a READ, WRITE, AREF, or MRS command is registered. CS# never transitions more than once per clock cycle.
6. IDD parameters are specified with ODT disabled.
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1.125Gb: x18, x36 RLDRAM 3
Electrical Specifications – Absolute Ratings and I/O Capacitance
Electrical Specifications – Absolute Ratings and I/O Capacitance
Absolute Maximum Ratings
Stresses greater than those listed may cause permanent damage to the device. This is a
stress rating only, and functional operation of the device at these or any other conditions outside those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may adversely affect reliability.
Table 5: Absolute Maximum Ratings
Symbol
Parameter
Min
Max
Units
VDD
VDD supply voltage relative to VSS
–0.4
1.975
V
VDDQ
Voltage on VDDQ supply relative to VSS
–0.4
1.66
V
Voltage on any ball relative to VSS
–0.4
1.66
V
Voltage on VEXT supply relative to VSS
–0.4
2.8
V
VIN,VOUT
VEXT
Input/Output Capacitance
Table 6: Input/Output Capacitance
Notes 1 and 2 apply to entire table
RL3-2400
Capacitance Parameters
Symbol
Min
CK/CK#
CCK
ΔC: CK to CK#
CDCK
Single-ended I/O: DQ, DM
Input strobe: DK/DK#
RL3-2133
Max
Min
1.3
2.1
0
0.15
CIO
1.9
CIO
1.9
RL3-1866
Max
Min
Max
Units
1.3
2.1
1.3
2.1
pF
0
0.15
0
0.15
pF
2.9
1.9
3.0
1.9
3.1
pF
2.9
1.9
3.0
1.9
3.1
pF
Notes
3
CIO
1.9
2.9
1.9
3.0
1.9
3.1
pF
ΔC: DK to DK#
CDDK
0
0.15
0
0.15
0
0.15
pF
ΔC: QK to QK#
CDQK
0
0.15
0
0.15
0
0.15
pF
ΔC: DQ to QK or DQ to DK
CDIO
–0.5
0.3
–0.5
0.3
–0.5
0.3
pF
4
Output strobe: QK/QK#, QVLD
Inputs (CMD, ADDR)
ΔC: CMD_ADDR to CK
JTAG balls
RESET#, MF balls
Notes:
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1.125Gb_rldram3.pdf – Rev. A 9/15 EN
CI
1.25
2.25
1.25
2.25
1.25
2.25
pF
5
CDI_CMD_ADDR
–0.5
0.3
–0.5
0.3
–0.4
0.4
pF
6
CJTAG
1.5
4.5
1.5
4.5
1.5
4.5
pF
7
CI
–
3.0
–
3.0
–
3.0
pF
1. +1.28V ≤ VDD ≤ +1.42V, +1.14V ≤ VDDQ ≤ 1.26V, +2.38V ≤ VEXT ≤ +2.63V, VREF = VSS, f = 100
MHz, TC = 25°C, VOUT(DC) = 0.5 × VDDQ, VOUT (peak-to-peak) = 0.1V.
2. Capacitance is not tested on ZQ ball.
3. DM input is grouped with the I/O balls, because they are matched in loading.
4. CDIO = CIO(DQ) - 0.5 × (CIO [QK] + CIO [QK#]).
5. Includes CS#, REF#, WE#, A[19:0], and BA[3:0].
6. CDI_CMD_ADDR = CI (CMD_ADDR) - 0.5 × (CCK [CK] + CCK [CK#]).
7. JTAG balls are tested at 50 MHz.
22
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AC and DC Operating Conditions
AC and DC Operating Conditions
Table 7: DC Electrical Characteristics and Operating Conditions
Note 1 applies to the entire table; Unless otherwise noted: 0°C ≤ TC ≤ +95°C; +1.28V ≤ VDD ≤ +1.42V
Description
Symbol
Min
Max
Units
Notes
Supply voltage
VEXT
2.38
2.63
V
Supply voltage
VDD
1.28
1.42
V
Isolated output buffer supply (standard)
VDDQ
1.14
1.26
V
Isolated output buffer supply (optional for 2400 Mb/s support only)
VDDQ
1.28
1.42
V
3
2, 4
Reference voltage
VREF
0.49 × VDDQ
0.51 × VDDQ
V
Input HIGH (logic 1) voltage
VIH(DC)
VREF + 0.10
VDDQ
V
Input LOW (logic 0) voltage
VIL(DC)
VSS
VREF - 0.10
V
Input leakage current: Any input 0V ≤ VIN ≤ VDD, VREF ball
0V ≤ VIN ≤ 1.1V (All other balls not under test = 0V)
ILI
–2
2
μA
Reference voltage current (All other balls not under test =
0V)
IREF
–5
5
μA
Notes:
1. All voltages referenced to VSS (GND).
2. The nominal value of VREF is expected to be 0.5 × VDDQ of the transmitting device. VREF is
expected to track variations in VDDQ.
3. 1.35V VDDQ can only be used to support 2400Mbps operation if required to close timing.
It cannot be used to support any slower data rates. VDDQ must be less than or equal to
VDD at all times.
4. Peak-to-peak noise (non-common mode) on VREF may not exceed ±2% of the DC value.
DC values are determined to be less than 20 MHz. Peak-to-peak AC noise on VREF should
not exceed ±2% of VREF(DC). Thus, from VDDQ/2, VREF is allowed ±2% VDDQ/2 for DC error
and an additional ±2% VDDQ/2 for AC noise. The measurement is to be taken at the
nearest VREF bypass capacitor.
Table 8: Input AC Logic Levels
Notes 1-3 apply to entire table; Unless otherwise noted: 0°C ≤ TC ≤ +95°C; +1.28V ≤ VDD ≤ +1.42V
Description
Symbol
Min
Max
Units
Input HIGH (logic 1) voltage
VIH(AC150)
VREF + 0.15
–
V
Input HIGH (logic 1) voltage
VIH(AC135)
VREF + 0.135
–
V
Input HIGH (logic 1) voltage
VIH(AC120)
VREF + 0.12
–
V
Input LOW (logic 0) voltage
VIL(AC120)
–
VREF - 0.12
V
Input LOW (logic 0) voltage
VIL(AC135)
–
VREF - 0.135
V
Input LOW (logic 0) voltage
VIL(AC150)
–
VREF - 0.15
V
Notes:
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1. All voltages referenced to VSS (GND).
2. The receiver will effectively switch as a result of the signal crossing the AC input level,
and will remain in that state as long as the signal does not ring back above/below the
DC input LOW/HIGH level.
3. Single-ended input slew rate = 1 V/ns; maximum input voltage swing under test is
900mV (peak-to-peak).
23
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AC and DC Operating Conditions
Figure 6: Single-Ended Input Signal
VIL and VIH levels with ringback
1.60V
VDDQ + 0.4V narrow
pulse width
1.20V
VDDQ
Minimum VIL and VIH levels
0.750V
0.70V
VIH(AC)
VIH(DC)
0.624V
0.612V
0.60V
0.588V
0.576V
0.50V
0.45V
0.750V
VIH(AC)
0.70V
VIH(DC)
0.624V
0.612V
0.60V
0.588V
0.576V
VIL(DC)
VIL(AC)
VREF + AC noise
VREF + DC error
VREF - DC error
VREF - AC noise
0.50V
VIL(DC)
0.450V
VIL(AC)
VSS
0.0V
VSS - 0.4V narrow
pulse width
–0.40V
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AC and DC Operating Conditions
AC Overshoot/Undershoot Specifications
Table 9: Control and Address Balls
RL3-2400
RL3-2133
RL3-1866
Maximum peak amplitude allowed for overshoot area
Parameter
0.4V
0.4V
0.4V
Maximum peak amplitude allowed for undershoot area
0.4V
0.4V
0.4V
Maximum overshoot area above VDDQ
0.22 Vns
0.25 Vns
0.28 Vns
Maximum undershoot area below VSS/VSSQ
0.22 Vns
0.25 Vns
0.28 Vns
RL3-2400
RL3-2133
RL3-1866
Maximum peak amplitude allowed for overshoot area
0.4V
0.4V
0.4V
Maximum peak amplitude allowed for undershoot area
0.4V
0.4V
0.4V
Maximum overshoot area above VDDQ
0.09 Vns
0.10 Vns
0.11 Vns
Maximum undershoot area below VSS/VSSQ
0.09 Vns
0.10 Vns
0.11 Vns
Table 10: Clock, Data, Strobe, and Mask Balls
Parameter
Figure 7: Overshoot
Maximum amplitude
Overshoot area
Volts (V)
VDDQ
Time (ns)
Figure 8: Undershoot
VSS/VSSQ
Volts (V)
Undershoot area
Maximum amplitude
Time (ns)
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AC and DC Operating Conditions
Table 11: Differential Input Operating Conditions (CK, CK# and DKx, DKx#)
Notes 1 and 2 apply to entire table
Parameter/Condition
Symbol
Min
Differential input voltage logic HIGH – slew
VIH,diff_slew
+200
n/a
mV
3
Differential input voltage logic LOW – slew
VIL,diff_slew
n/a
-200
mV
3
Differential input voltage logic HIGH
VIH,diff(AC)
2 × (VIH(AC) - VREF)
VDDQ
mV
4
Differential input voltage logic LOW
VIL,diff(AC)
VSSQ
2 × (VIL(AC) - VREF )
mV
5
Differential input crossing voltage relative to VDD/2
Max
Units
Notes
VIX
VREF(DC) - 150
VREF(DC) + 150
mV
6
Single-ended HIGH level
VSEH
VIH(AC)
VDDQ
mV
4
Single-ended LOW level
VSEL
VSSQ
VIL(AC)
mV
5
Notes:
1.
2.
3.
4.
CK/CK# and DKx/DKx# are referenced to VDDQ and VSSQ.
Differential input slew rate = 2 V/ns.
Defines slew rate reference points, relative to input crossing voltages.
Maximum limit is relative to single-ended signals; overshoot specifications are applicable.
5. Minimum limit is relative to single-ended signals; undershoot specifications are applicable.
6. The typical value of VIX is expected to be about 0.5 × VDDQ of the transmitting device
and VIX is expected to track variations in VDDQ. VIX indicates the voltage at which differential input signals must cross.
Figure 9: VIX for Differential Signals
VDDQ
VDDQ
CK#, DKx#
CK#, DKx#
X
VIX
VIX
VDDQ/2
X
X
VDDQ/2
VIX
X
CK, DKx
CK, DKx
VSSQ
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VIX
VSSQ
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AC and DC Operating Conditions
Figure 10: Single-Ended Requirements for Differential Signals
VDDQ
VSEH,min
VDDQ/2
VSEH
CK or DKx
VSEL,max
VSEL
VSS
Figure 11: Definition of Differential AC Swing and tDVAC
tDVAC
VIH,diff(AC)min
VIH,diff_slew,min
CK - CK#
DKx - DKx#
0.0
VIL,diff_slew,max
VIL,diff(AC)max
half cycle
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27
tDVAC
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AC and DC Operating Conditions
Table 12: Allowed Time Before Ringback (tDVAC) for CK, CK#, DKx, and DKx#
Slew Rate (V/ns)
MIN tDVAC (ps) at |VIH/VIL,diff(AC)|
>4.0
175
4.0
170
3.0
167
2.0
163
1.9
162
1.6
161
1.4
159
1.2
155
1.0
150
<1.0
150
Slew Rate Definitions for Single-Ended Input Signals
Setup (tIS and tDS) nominal slew rate for a rising signal is defined as the slew rate between the last crossing of V REF and the first crossing of V IH(AC)min. Setup (tIS and tDS)
nominal slew rate for a falling signal is defined as the slew rate between the last crossing
of V REF and the first crossing of V IL(AC)max.
Hold (tIH and tDH) nominal slew rate for a rising signal is defined as the slew rate between the last crossing of V IL(DC)max and the first crossing of V REF. Hold (tIH and tDH)
nominal slew rate for a falling signal is defined as the slew rate between the last crossing
of V IH(DC)min and the first crossing of V REF (see Figure 12 (page 29)).
Table 13: Single-Ended Input Slew Rate Definition
Input Slew Rates
(Linear Signals)
Measured
Input
Edge
From
To
Calculation
Setup
Rising
VREF
VIH(AC)min
[VIH(AC)min - VREFΔTRS
Falling
VREF
VIL(AC)max
[VREF - VIL(AC)maxΔTFS
Rising
VIL(DC)max
VREF
[VREF - VIL(DC)maxΔTRH
Falling
VIH(DC)min
VREF
[VIH(DC)min - VREFΔTFH
Hold
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AC and DC Operating Conditions
Figure 12: Nominal Slew Rate Definition for Single-Ended Input Signals
ΔTRS
Setup
Single-ended input voltage (DQ, CMD, ADDR)
VIH(AC)min
VIH(DC)min
VREF
VIL(DC)max
VIL(AC)max
ΔTFS
ΔTRH
Hold
Single-ended input voltage (DQ, CMD, ADDR)
VIH(AC)min
VIH(DC)min
VREF
VIL(DC)max
VIL(AC)max
ΔTFH
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AC and DC Operating Conditions
Slew Rate Definitions for Differential Input Signals
Input slew rate for differential signals (CK, CK# and DKx, DKx#) are defined and measured as shown in the following two tables. The nominal slew rate for a rising signal is
defined as the slew rate between V IL,diff,max and V IH,diff,min. The nominal slew rate for a
falling signal is defined as the slew rate between V IH,diff,min and V IL,diff,max.
Table 14: Differential Input Slew Rate Definition
Differential Input
Slew Rates
(Linear Signals)
Input
Edge
CK and DK
reference
Measured
From
To
Calculation
Rising
VIL,diff_slew,max
VIH,diff_slew,min
[VIH,diff_slew,min - VIL,diff_slew,maxΔTRdiff
Falling
VIH,diff_slew,min
VIL,diff_slew,max
[VIH,diff_slew,min - VIL,diff_slew,maxΔTFdiff
Figure 13: Nominal Differential Input Slew Rate Definition for CK, CK#, DKx, and DKx#
Differential input voltage (CK, CK#; DKx, DKx#)
ΔTRdiff
VIH,diff_slew,min
0
VIL,diff_slew,max
ΔTFdiff
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ODT Characteristics
ODT Characteristics
ODT effective resistance, RTT, is defined by MR1[4:2]. ODT is applied to the DQ, DM,
and DKx, DKx# balls. The individual pull-up and pull-down resistors (R TTPU and RTTPD)
are defined as follows:
RTTPU =(VDDQ - VOUT) / |IOUT|, under the condition that RTTPD is turned off
RTTPD = (VOUT) / |IOUT|, under the condition that RTTPU is turned off
Figure 14: ODT Levels and I-V Characteristics
Chip in termination mode
ODT
VDDQ
IPU
To
other
circuitry
such as
RCV, . . .
IOUT = IPD - IPU
RTTPU
DQ
IOUT
RTTPD
VOUT
IPD
VSSQ
Table 15: ODT DC Electrical Characteristics
Parameter/Condition
Symbol
RTT effective impedance from VIL(AC) to VIH(AC)
Deviation of VM with respect to VDDQ/2
Notes:
Min
RTT_EFF
Nom
Max
Units
See Table 16 (page 32).
ΔVm
-5
-
+5
Notes
1, 2
%
3
1. Tolerance limits are applicable after proper ZQ calibration has been performed at a stable temperature and voltage. Refer to ODT Sensitivity (page 33) if either the temperature or voltage changes after calibration.
2. Measurement definition for RTT: Apply VIH(AC) to ball under test and measure current
I[VIH(AC)], then apply VIL(AC) to ball under test and measure current I[VIL(AC)]:
RTT =
VIH(AC) - VIL(AC)
|I[VIH(AC)] - I[VIL(AC)]|
3. Measure voltage (VM) at the tested ball with no load:
ΔVM =
2 × VM
- 1 × 100
VDDQ
ODT Resistors
The on-die termination resistance is selected by MR1[4:2]. The following table provides
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ODT Characteristics
fication requirements; however, they can be used as design guidelines to indicate what
RTT is targeted to provide:
• RTT Ω is made up of RTT120(PD240) and RTT120(PU240).
• RTT Ω is made up of RTT60(PD120) and RTT60(PU120).
• RTT Ω is made up of RTT40(PD80) and RTT40(PU80).
Table 16: RTT Effective Impedances
RTT
Resistor
VOUT
Min
Nom
Max
Units
Ω
RTT120(PD240)
0.2 x VDDQ
0.6
1.0
1.1
RZQ/1
0.5 x VDDQ
0.9
1.0
1.1
RZQ/1
0.8 x VDDQ
0.9
1.0
1.4
RZQ/1
RTT120(PU240)
Ω
Ω
RTT60(PD120)
RTT60(PU120)
Ω
Ω
RTT40(PD80)
RTT40(PU80)
Ω
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32
0.2 x VDDQ
0.9
1.0
1.4
RZQ/1
0.5 x VDDQ
0.9
1.0
1.1
RZQ/1
0.8 x VDDQ
0.6
1.0
1.1
RZQ/1
VIL(AC) to
VIH(AC)
0.9
1.0
1.6
RZQ/2
0.2 x VDDQ
0.6
1.0
1.1
RZQ/2
0.5 x VDDQ
0.9
1.0
1.1
RZQ/2
0.8 x VDDQ
0.9
1.0
1.4
RZQ/2
0.2 x VDDQ
0.9
1.0
1.4
RZQ/2
0.5 x VDDQ
0.9
1.0
1.1
RZQ/2
0.8 x VDDQ
0.6
1.0
1.1
RZQ/2
VIL(AC) to
VIH(AC)
0.9
1.0
1.6
RZQ/4
0.2 x VDDQ
0.6
1.0
1.1
RZQ/3
0.5 x VDDQ
0.9
1.0
1.1
RZQ/3
0.8 x VDDQ
0.9
1.0
1.4
RZQ/3
0.2 x VDDQ
0.9
1.0
1.4
RZQ/3
0.5 x VDDQ
0.9
1.0
1.1
RZQ/3
0.8 x VDDQ
0.6
1.0
1.1
RZQ/3
VIL(AC) to
VIH(AC)
0.9
1.0
1.6
RZQ/6
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Output Driver Impedance
ODT Sensitivity
If either temperature or voltage changes after I/O calibration, then the tolerance limits
listed in Table 15 (page 31) and Table 16 (page 32) can be expected to widen according
to Table 17 (page 33) and Table 18 (page 33).
Table 17: ODT Sensitivity Definition
Symbol
Min
Max
Units
RTT
0.9 - dRTTdT × |DT| - dRTTdV × |DV|
1.6 + dRTTdT × |DT| + dRTTdV × |
DV|
RZQ/(2,4,6)
Note:
1. DT = T - T(@ calibration), DV = VDDQ - VDDQ(@ calibration) or VDD - VDD(@ calibration).
Table 18: ODT Temperature and Voltage Sensitivity
Change
Min
Max
Units
dRTTdT
0
1.5
%/°C
dRTTdV
0
0.15
%/mV
Output Driver Impedance
The output driver impedance is selected by MR1[1:0] during initialization. The selected
value is able to maintain the tight tolerances specified if proper ZQ calibration is performed.
Output specifications refer to the default output driver unless specifically stated otherwise. A functional representation of the output buffer is shown below. The output driver
impedance RON is defined by the value of the external reference resistor RZQ as follows:
• RON,x = RZQ/y (with RZQ = 240Ω x Ω or 60Ω with y = 6 or 4, respectively)
The individual pull-up and pull-down resistors (RON(PU) and RON(PD)) are defined as follows:
• RON(PU) = (VDDQ - V OUT)/|IOUT|, when RON(PD) is turned off
• RON(PD) = (VOUT)/|IOUT|, when RON(PU) is turned off
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Output Driver Impedance
Figure 15: Output Driver
Chip in drive mode
Output Driver
VDDQ
IPU
RON(PU)
To
other
circuitry
such as
RCV, . . .
DQ
IOUT
RON(PD)
VOUT
IPD
VSSQ
Table 19: Driver Pull-Up and Pull-Down Impedance Calculations
RON
Min
Nom
Max
Units
RZQ/6 = (240Ω 
39.6
40
40.4
Ω
RZQ/4 = (240Ω 
59.4
60
60.6
Ω
Min
Nom
Max
Units
Driver
Ω pull-down
Ω pull-up
Ω pull-down
Ω pull-up
VOUT
0.2 × VDDQ
24
40
44
Ω
0.5 × VDDQ
36
40
44
Ω
0.8 × VDDQ
36
40
56
Ω
0.2 × VDDQ
36
40
56
Ω
0.5 × VDDQ
36
40
44
Ω
0.8 × VDDQ
24
40
44
Ω
0.2 × VDDQ
36
60
66
Ω
0.5 × VDDQ
54
60
66
Ω
0.8 × VDDQ
54
60
84
Ω
0.2 × VDDQ
54
60
84
Ω
0.5 × VDDQ
54
60
66
Ω
0.8 × VDDQ
36
60
66
Ω
Output Driver Sensitivity
If either the temperature or the voltage changes after ZQ calibration, then the tolerance
limits listed in Table 19 (page 34) can be expected to widen according to Table 20
(page 35) and Table 21 (page 35).
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Output Driver Impedance
Table 20: Output Driver Sensitivity Definition
Symbol
Min
Max
Units
RON(PD) @ 0.2 × VDDQ
0.6 - dRONdTH × DT - dRONdVH × DV
1.1 + dRONdTH × DT + dRONdVH × DV
RZQ/(6, 4)
RON(PD) @ 0.5 × VDDQ
0.9 - dRONdTM × DT - dRONdVM × DV 1.1 + dRONdTM × DT + dRONdVM × DV
RZQ/(6, 4)
RON(PD) @ 0.8 × VDDQ
0.9 - dRONdTL × DT - dRONdVL × DV
1.4 + dRONdTL × DT + dRONdVL × D
RZQ/(6, 4)
RON(PU) @ 0.2 × VDDQ
0.9 - dRONdTH × DT - dRONdVH × DV
1.4 + dRONdTH × DT + dRONdVH × DV
RZQ/(6, 4)
RON(PU) @ 0.5 × VDDQ
0.9 - dRONdTM × DT - dRONdVM × DV 1.1 + dRONdTM × DT + dRONdVM × DV
RZQ/(6, 4)
RON(PU) @ 0.8 × VDDQ
0.6 - dRONdTL × DT - dRONdVL × DV
Note:
1.1 + dRONdTL × DT + dRONdVL × DV
RZQ/(6, 4)
1. DT = T - T(@ calibration), DV = VDDQ - VDDQ(@ calibration) or VDD - VDD(@ calibration).
Table 21: Output Driver Voltage and Temperature Sensitivity
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Change
Min
Max
Unit
dRONdTM
0
1.5
%/°C
dRONdVM
0
0.15
%/mV
dRONdTL
0
1.5
%/°C
dRONdVL
0
0.15
%/mV
dRONdTH
0
1.5
%/°C
dRONdVH
0
0.15
%/mV
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Output Characteristics and Operating Conditions
Output Characteristics and Operating Conditions
Table 22: Single-Ended Output Driver Characteristics
Note 1 and 2 apply to entire table
Parameter/Condition
Symbol
Min
Max
Units
Notes
Output leakage current; DQ are disabled; Any output ball
0V ≤ VOUT ≤ VDDQ; ODT is disabled; All other balls not under
test = 0V
IOZ
–5
5
μA
Output slew rate: Single-ended; For rising and falling edges,
measures between VOL(AC) = VREF - 0.1 × VDDQ and VOH(AC) =
VREF + 0.1 × VDDQ
SRQSE
2.5
6
V/ns
4, 5
Single-ended DC high-level output voltage
VOH(DC)
0.8 × VDDQ
V
6
Single-ended DC mid-point level output voltage
VOM(DC)
0.5 × VDDQ
V
6
Single-ended DC low-level output voltage
VOL(DC)
0.2 × VDDQ
V
6
Single-ended AC high-level output voltage
VOH(AC)
VTT + 0.1 × VDDQ
V
7, 8, 9
Single-ended AC low-level output voltage
VOL(AC)
VTT - 0.1 × VDDQ
V
7, 8, 9
–10
%
3
Impedance delta between pull-up and pull-down for DQ
and QVLD
MMPUPD
Test load for AC timing and output slew rates
Notes:
10
Output to VTT (VDDQ/2) via 25Ω resistor
9
1. All voltages are referenced to VSS.
2. RZQ is 240Ω (±1%) and is applicable after proper ZQ calibration has been performed at
a stable temperature and voltage.
3. Measurement definition for mismatch between pull-up and pull-down (MMPUPD). Measure both RON(PU) and RON(PD) at 0.5 × VDDQ:
MMPUPD =
RonPU - RonPD
RonNOM
x 100
4. The 6 V/ns maximum is applicable for a single DQ signal when it is switching either from
HIGH to LOW or LOW to HIGH while the remaining DQ signals in the same byte lane are
either all static or switching the opposite direction. For all other DQ signal switching
combinations, the maximum limit of 6 V/ns is reduced to 5 V/ns.
5. See Table 24 (page 40) for output slew rate.
6. See the Driver Pull-Up and Pull-Down Impedance Calculations table for IV curve linearity.
Do not use AC test load.
7. VTT = VDDQ/2.
8. See Figure 16 (page 38) for an example of a single-ended output signal.
9. See Figure 18 (page 39) for the test load configuration.
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Output Characteristics and Operating Conditions
Table 23: Differential Output Driver Characteristics
Notes 1 and 2 apply to entire table
Parameter/Condition
Symbol
Min
Max
Units
IOZ
–5
5
μA
Output slew rate: Differential; For rising and falling
edges, measures between VOL,diff(AC) = –0.2 × VDDQ and
VOH,diff(AC) = +0.2 × VDDQ
SRQdiff
5
12
V/ns
5
Output differential cross-point voltage
VOX(AC)
VREF - 150
VREF + 150
mV
6
Differential high-level output voltage
VOH,diff(AC)
V
6
Differential low-level output voltage
VOL,diff(AC)
V
6
%
3
Output leakage current; DQ are disabled; Any output
ball 0V ≤ VOUT ≤ VDDQ; ODT is disabled; All other balls not
under test = 0V
Delta resistance between pull-up and pull-down for
QK/QK#
–0.2 × VDDQ
–10
MMPUPD
Test load for AC timing and output slew rates
Notes:
+0.2 × VDDQ
10
Output to VTT (VDDQ/2) via 25Ω resistor
Notes
4
1. All voltages are referenced to VSS.
2. RZQ is 240Ω (±1%) and is applicable after proper ZQ calibration has been performed at
a stable temperature and voltage.
3. Measurement definition for mismatch between pull-up and pull-down (MMPUPD). Measure both RON(PU) and RON(PD) at 0.5 x VDDQ:
MMPUPD =
RonPU - RonPD
RonNOM
x 100
4. See Figure 18 (page 39) for the test load configuration.
5. See Table 25 (page 41) for the output slew rate.
6. See Figure 17 (page 39) for an example of a differential output signal.
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Output Characteristics and Operating Conditions
Figure 16: DQ Output Signal
MAX output
VOH(AC)
VOL(AC)
MIN output
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Output Characteristics and Operating Conditions
Figure 17: Differential Output Signal
MAX output
VOH,diff
X
X
VOX(AC)max
X
VOX(AC)min
X
VOL,diff
MIN output
Reference Output Load
The following figure represents the effective reference load of 25Ω used in defining the
relevant device AC timing parameters as well as the output slew rate measurements. It is
not intended to be a precise representation of a particular system environment or a depiction of the actual load presented by a production tester. System designers should use
IBIS or other simulation tools to correlate the timing reference load to a system environment.
Figure 18: Reference Output Load for AC Timing and Output Slew Rate
DUT
VREF
DQ
QKx
QKx#
QVLD
ZQ
VDDQ/2
RTT = 25Ω
VTT = VDDQ/2
Timing reference point
RZQ = 240Ω
VSS
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Slew Rate Definitions for Single-Ended Output Signals
Slew Rate Definitions for Single-Ended Output Signals
The single-ended output driver is summarized in the following table. With the reference
load for timing measurements, the output slew rate for falling and rising edges is defined and measured between V OL(AC) and V OH(AC) for single-ended signals.
Table 24: Single-Ended Output Slew Rate Definition
Single-Ended Output Slew Rates (Linear Signals)
Measured
Output
Edge
From
To
Calculation
DQ and QVLD
Rising
VOL(AC)
VOH(AC)
VOH(AC) - VOL(AC)
VOH(AC)
VOL(AC)
VOH(AC) - VOL(AC)
Falling
ΔTRSE
ΔTFSE
Figure 19: Nominal Slew Rate Definition for Single-Ended Output Signals
ΔTRSE
VOH(AC)
VTT
VOL(AC)
ΔTFSE
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Slew Rate Definitions for Differential Output Signals
Slew Rate Definitions for Differential Output Signals
The differential output driver is summarized in the following table. With the reference
load for timing measurements, the output slew rate for falling and rising edges is defined and measured between V OL(AC) and V OH(AC) for differential signals.
Table 25: Differential Output Slew Rate Definition
Differential Output Slew Rates (Linear Signals)
Measured
Output
Edge
From
To
Calculation
QKx, QKx#
Rising
VOL,diff(AC)
VOH,diff(AC)
VOH,diff(AC)max - VOL,diff(AC)
VOH,diff(AC)
VOL,diff(AC)
VOH,diff(AC) - VOL,diff(AC)
Falling
ΔTRdiff
ΔTFdiff
Figure 20: Nominal Differential Output Slew Rate Definition for QKx, QKx#
ΔTRdiff
VOH,diff(AC)
0
VOL,diff(AC)
ΔTFdiff
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1.125Gb: x18, x36 RLDRAM 3
Speed Bin Tables
Speed Bin Tables
Table 26: RL3 2400/2133/1866 Speed Bins
-083F
Parameter
Symbol
RL = 3 ; WL = 4
tCK
-083E
-093F
Max
Min
-093E
Min
Max
Min
(avg)
5
5
5
5
RL = 4 ; WL = 5
tCK
(avg)
4
5
4
RL = 5 ; WL = 6
tCK
(avg)
3
4.3
3
RL = 6 ; WL = 7
tCK
(avg)
2.5
3.5
2.5
RL = 7 ; WL = 8
tCK
(avg)
2.5
3
2.5
RL = 8 ; WL = 9
tCK
(avg)
1.875
2.5
1.875
RL = 9 ; WL = 10
tCK
(avg)
1.875
2
1.875
RL = 10 ; WL = 11
tCK
(avg)
1.5
2
1.5
2
1.5
2
RL = 11 ; WL = 12
tCK
(avg)
1.5
1.875
1.5
2
1.5
1.875
RL = 12 ; WL = 13
tCK
(avg)
1.25
1.875
1.25
1.875
1.25
1.875
RL = 13 ; WL = 14
tCK
(avg)
1.25
1.5
1.25
1.5
1.25
RL = 14 ; WL = 15
tCK
(avg)
1.07
1.5
1.07
1.5
RL = 15 ; WL = 16
tCK
(avg)
1.0
1.25
1.0
1.25
RL = 16 ; WL = 17
tCK
(avg) 0.9375
1.25
0.9375
RL = 17 ; WL = 18
tCK
(avg) 0.9375
1.07
RL = 18 ; WL = 19
tCK
(avg) 0.8333
1.07
-107E
Max
Min
Max
Min
Max
Units
5
5
5
5
Reserved
ns
5
4
5
4
5
4
5
ns
4.3
3
4.3
3
4.3
3.5
4.3
ns
4
2.5
3.5
2.5
3.5
34
3.5
ns
3
2.5
3
2.5
3
2.5
3
ns
3
1.875
2.5
1.875
2.5
2
2.5
ns
2
1.875
2
1.875
2
1.875
2
ns
1.5
2
1.875
2
ns
1.5
1.875
1.5
1.875
ns
1.25
1.5
1.5
1.66
ns
1.5
1.25
1.5
1.25
1.5
ns
1.07
1.5
1.07
1.25
1.25
1.33
ns
1.0
1.25
1.0
1.25
1.07
1.33
ns
1.25
0.9375
1.25
0.9375
1.25
Reserved
ns
0.9375
1.07
0.9375
1.07
0.9375
1.07
Reserved
ns
0.8333
1.07
Reserved
Reserved
ns
8
8
ns
Clock Timing
Reserved
Row Cycle Timing
Row cycle time
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tRC
6.67
–
7.5
–
42
7.5
–
–
–
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1.125Gb: x18, x36 RLDRAM 3
AC Electrical Characteristics
AC Electrical Characteristics
Table 27: AC Electrical Characteristics
Notes 1–7 apply to entire table
RL3-2400
Parameter
Symbol
Min
Max
RL3-2133
RL3-1866
Min
Max
Min
Max
Units
Notes
8
488
8
488
ns
8
ns
9, 10
Clock Timing
Clock period average:
DLL disable mode
tCK(DLL_DIS)
8
488
Clock period average: DLL enable
mode
tCK(avg)
High pulse width average
tCH(avg)
0.47
0.53
0.47
0.53
0.47
0.53
CK
11
Low pulse width average
tCL(avg)
0.47
0.53
0.47
0.53
0.47
0.53
CK
11
DLL locked
tJIT(per)
–42
42
–50
50
–60
60
ps
12
DLL locking
tJIT(per),lck
–34
34
–40
40
–50
50
ps
12
Clock
period
jitter
Clock absolute period
tCK(abs)
Clock absolute high pulse width
tCH(abs)
See
tCK
values in the RL3 Speed Bins table.
MIN = tCK(avg),min + tJIT(per),min; MAX =
tCK(avg),max + tJIT(per),max
0.43
–
0.43
–
0.43
ps
–
tCK(av
13
g)
Clock absolute low pulse width
tCL(abs)
0.43
–
0.43
–
0.43
–
tCK(av
14
g)
Cycle-tocycle
jitter
DLL locked
tJIT(cc)
83
100
120
ps
15
DLL locking
tJIT(cc),lck
67
80
100
ps
15
2 cycles
tERR(2per)
ps
16
3 cycles
tERR(3per)
–73
73
–87
87
–105
105
ps
16
4 cycles
tERR(4per)
–81
81
–97
97
–117
117
ps
16
5 cycles
tERR(5per)
–87
87
–105
105
–126
126
ps
16
6 cycles
tERR(6per)
–92
92
–111
111
–133
133
ps
16
7 cycles
tERR(7per)
–97
97
–116
116
–139
139
ps
16
8 cycles
tERR(8per)
–101
101
–121
121
–145
145
ps
16
9 cycles
tERR(9per)
–104
104
–125
125
–150
150
ps
16
10 cycles
tERR(10per)
–107
107
–128
128
–154
154
ps
16
11 cycles
tERR(11per)
–110
110
–132
132
–158
158
ps
16
12 cycles
tERR(12per)
–112
112
–134
134
–161
161
ps
16
n = 13, 14 ... 49, 50 cycles
tERR(nper)
tJIT(per),min
ps
16
Base
(specification)
tDS(AC150)
Cumulative
error across
–62
62
tERR(nper),min
tERR(nper),max
–74
74
–88
88
= [1 + 0.68LN(n)] ×
= [1 + 0.68LN(n)] × tJIT(per),max
DQ Input Timing
Data setup
time to DK,
DK#
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VREF
@ 1 V/ns
–35
–
–30
–
–15
–
ps
17, 18
115
–
120
–
135
–
ps
18, 19
43
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AC Electrical Characteristics
Table 27: AC Electrical Characteristics (Continued)
Notes 1–7 apply to entire table
RL3-2400
RL3-2133
RL3-1866
Parameter
Symbol
Min
Max
Min
Max
Min
Max
Units
Notes
Data setup
time to DK,
DK#
Base
(specification)
tDS(AC135)
48
–
53
–
68
–
ps
17, 18
115
–
120
–
135
–
ps
18, 19
Data setup
time to DK,
DK#
Base
(specification)
55
–
60
–
75
–
ps
17, 18
115
–
120
–
135
–
ps
18, 19
Data hold
time from
DK, DK#
Base
(specification)
0
–
5
–
20
–
ps
17, 18
100
–
105
–
120
–
ps
Data hold
time from
DK, DK#
Base
(specification)
50
–
55
–
70
–
ps
100
–
105
–
120
–
ps
240
–
280
–
320
–
ps
VREF
@ 2 V/ns
tDS(AC120)
VREF
@ 2 V/ns
tDH(DC100)
VREF
@ 1 V/ns
tDH(DC100)
VREF
@ 2 V/ns
Minimum data pulse width
tDIPW
QK, QK# edge to output data edge
within byte group
tQKQ
17, 18
20
DQ Output Timing
QK, QK# edge to any output data
edge within specific data word
grouping (only for x36)
x
tQKQ02,
–
65
–
75
–
85
ps
–
100
–
125
–
135
ps
22
0.38
–
0.38
–
0.38
–
tCK(av
23
tQKQ13
tQH
g)
DQ output hold time from QK, QK#
DQ Low-Z time from CK, CK#
tLZ
–340
170
–360
180
–390
195
ps
24, 26
DQ High-Z time from CK, CK#
tHZ
–
170
–
180
–
195
ps
24, 26
29
Input and Output Strobe Timing
tCKDK
–0.27
0.27
–0.27
0.27
–0.27
0.27
CK
DK, DK# differential input HIGH
width
tDKH
0.45
0.55
0.45
0.55
0.45
0.55
CK
DK, DK# differential input LOW
width
tDKL
0.45
0.55
0.45
0.55
0.45
0.55
CK
tCKQK
–130
130
–135
135
–140
140
ps
26
- 5%
tCK
+ 5%
tCK
- 5%
tCK
+ 5%
tCK
- 5%
tCK
+ 5%
tCK
1
10
1
10
1
10
ns
27
DK (rising), DK# (falling) edge to/
from CK (rising), CK# (falling) edge
QK (rising), QK# (falling) edge to
CK (rising), CK# (falling) edge
QK (rising), QK# (falling) edge to
CK (rising), CK# (falling) edge with
DLL disabled
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tCKQK
DLL_DIS
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AC Electrical Characteristics
Table 27: AC Electrical Characteristics (Continued)
Notes 1–7 apply to entire table
RL3-2400
Parameter
RL3-2133
RL3-1866
Symbol
Min
Max
Min
Max
Min
Max
Units
Notes
QK, QK# differential output HIGH
time
tQKH
0.4
–
0.4
–
0.4
–
CK
23
QK, QK# differential output LOW
time
tQKL
0.4
–
0.4
–
0.4
–
CK
23
QK (falling), QK# (rising) edge to
QVLD edge
tQKVLD
–
115
–
125
–
135
ps
25
Command and Address Timing
CTRL, CMD,
ADDR, setup to
CK,CK#
Base
(specification)
CTRL, CMD,
ADDR, setup to
CK,CK#
Base
(specification)
CTRL, CMD,
ADDR, setup to
CK,CK#
Base
(specification)
CTRL, CMD,
ADDR, hold
from
CK,CK#
Base
(specification)
tIS(AC150)
VREF
@ 1 V/ns
tIS(AC135)
VREF
@ 1 V/ns
tIS(AC120)
VREF
@ 1 V/ns
tIH(DC100)
VREF
@ 1 V/ns
Minimum CTRL, CMD, ADDR pulse
width
Row cycle time
tIPW
tRC
70
–
85
–
120
–
ps
28, 30
220
–
235
–
270
–
ps
19, 30
85
–
100
–
135
–
ps
28, 30
220
–
235
–
270
–
ps
19, 30
100
–
115
–
150
–
ps
28, 30
220
–
235
–
270
–
ps
19, 30
50
–
65
–
100
–
ps
28, 30
150
–
165
–
200
–
ps
19, 30
410
–
470
–
535
–
ps
20
ns
21, 34
See minimum tRC values in the RL3 Speed Bins table.
tREF
64
–
64
–
64
–
ms
Sixteen-bank access window
tSAW
8
–
8
–
8
–
ns
Multibank access delay
tMMD
2
–
2
–
2
–
CK
33
WRITE-to-READ to same address
tWTR
WL +
BL/2
–
WL +
BL/2
–
WL +
BL/2
–
CK
32
Mode register set cycle time to any
command
tMRSC
12
–
12
–
12
–
CK
READ training register minimum
READ time
tRTRS
2
–
2
–
2
–
CK
READ training register burst end to
mode register set for training register exit
tRTRE
2
–
1
–
1
–
CK
Refresh rate
Calibration Timing
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1.125Gb: x18, x36 RLDRAM 3
AC Electrical Characteristics
Table 27: AC Electrical Characteristics (Continued)
Notes 1–7 apply to entire table
RL3-2400
Parameter
ZQCL: Long POWER-UP and RESET
calibration operation
time
Normal operation
ZQCS: Short calibration time
RL3-2133
RL3-1866
Symbol
Min
Max
Min
Max
Min
Max
Units
tZQinit
1024
–
1024
–
1024
–
CK
tZQoper
512
–
512
–
512
–
CK
tZQcs
128
–
128
–
128
–
CK
Notes
Initialization and Reset Timing
Begin power-supply ramp to power
supplies stable
tV
DDPR
–
200
–
200
–
200
ms
RESET# LOW to power supplies stable
tRPS
–
200
–
200
–
200
ms
RESET# LOW to I/O and RTT High-Z
tIOz
–
20
–
20
–
20
ns
Notes:
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31
1. Parameters are applicable with 0°C ≤ TC ≤ +95°C; +1.28V ≤ VDD ≤ +1.42V, +2.38V ≤ VEXT ≤
+2.63V, +1.14V ≤ VDDQ ≤ 1.26V.
2. All voltages are referenced to VSS.
3. The unit tCK(avg) represents the actual tCK(avg) of the input clock under operation. The
unit CK represents one clock cycle of the input clock, counting the actual clock edges.
4. AC timing and IDD tests may use a VIL-to-VIH swing of up to 900mV in the test environment, but input timing is still referenced to VREF (except tIS, tIH, tDS, and tDH use the
AC/DC trip points and CK,CK# and DKx, DKx# use their crossing points). The minimum
slew rate for the input signals used to test the device is 1 V/ns for single-ended inputs
and 2 V/ns for differential inputs in the range between VIL(AC) and VIH(AC).
5. All timings that use time-based values (ns, μs, ms) should use tCK(avg) to determine the
correct number of clocks. In the case of noninteger results, all minimum limits should be
rounded up to the nearest whole integer, and all maximum limits should be rounded
down to the nearest whole integer.
6. The term “strobe” refers to the DK and DK# or QK and QK# differential crossing point
when DK and QK, respectively, is the rising edge. Clock, or CK, refers to the CK and CK#
differential crossing point when CK is the rising edge.
7. The output load defined in Figure 18 (page 39) is used for all AC timing and slew rates.
The actual test load may be different. The output signal voltage reference point is
VDDQ/2 for single-ended signals and the crossing point for differential signals.
8. When operating in DLL disable mode, Micron does not warrant compliance with normal
mode timings or functionality.
9. The clock’s tCK(avg) is the average clock over any 200 consecutive clocks and
tCK(avg),min is the smallest clock rate allowed, with the exception of a deviation due to
clock jitter. Input clock jitter is allowed provided it does not exceed values specified and
must be of a random Gaussian distribution in nature.
10. Spread spectrum is not included in the jitter specification values. However, the input
clock can accommodate spread spectrum at a sweep rate in the range of 20–60 kHz with
an additional 1% of tCK(avg) as a long-term jitter component; however, the spread spectrum may not use a clock rate below tCK(avg),min.
11. The clock’s tCH(avg) and tCL(avg) are the average half-clock period over any 200 consecutive clocks and is the smallest clock half-period allowed, with the exception of a deviation due to clock jitter. Input clock jitter is allowed provided it does not exceed values
specified and must be of a random Gaussian distribution in nature.
46
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AC Electrical Characteristics
12. The period jitter, tJIT(per), is the maximum deviation in the clock period from the average or nominal clock. It is allowed in either the positive or negative direction.
13. tCH(abs) is the absolute instantaneous clock high pulse width as measured from one rising edge to the following falling edge.
14. tCL(abs) is the absolute instantaneous clock low pulse width as measured from one falling edge to the following rising edge.
15. The cycle-to-cyle jitter, tJIT(cc), is the amount the clock period can deviate from one cycle
to the next. It is important to keep cycle-to-cycle jitter at a minimum during the DLL
locking time.
16. The cumulative jitter error, tERR(nper), where n is the number of clocks between 2 and
50, is the amount of clock time allowed to accumulate consecutively away from the
average clock over n number of clock cycles.
17. tDS(base) and tDH(base) values are for a single-ended 1 V/ns DQ slew rate and 2 V/ns differential DK, DK# slew rate.
18. These parameters are measured from a data signal (DM, DQ0, DQ1, and so forth) transition edge to its respective data strobe signal (DK, DK#) crossing.
19. The setup and hold times are listed converting the base specification values (to which
derating tables apply) to VREF when the slew rate is 1 V/ns. These values, with a slew rate
of 1 V/ns, are for reference only.
20. Pulse width of an input signal is defined as the width between the first crossing of
VREF(DC) and the consecutive crossing of VREF(DC).
21. Bits MR0[3:0] select the number of clock cycles required to satisfy the minimum tRC value. Minimum tRC value must be divided by the clock period and rounded up to the next
whole number to determine the earliest clock edge that the subsequent command can
be issued to the bank.
22. tQKQ02 defines the skew between QK0 and DQ[26:18] and between QK2 and DQ[8:0].
tQKQ13 defines the skew between QK1 and DQ[35:27] and between QK3 and DQ[17:9].
23. When the device is operated with input clock jitter, this parameter needs to be derated
by the actual tJIT(per) (the larger of tJIT(per),min or tJIT(per),max of the input clock; output deratings are relative to the SDRAM input clock).
24. Single-ended signal parameter.
25. For x36 device this specification references the skew between the falling edge of QK0
and QK1 to QVLD0 and the falling edge of QK2 and QK3 to QVLD1.
26. The DRAM output timing is aligned to the nominal or average clock. The following output parameters must be derated by the actual jitter error when input clock jitter is
present, even when within specification. This results in each parameter becoming larger.
The following parameters are required to be derated by subtracting tERR(10per),max:
tCKQK (MIN), and tLZ (MIN). The following parameters are required to be derated by
subtracting tERR(10per),min: tCKQK (MAX), tHZ (MAX), and tLZ (MAX).
27. The tDQSCKdll_dis parameter begins RL - 1 cycles after the READ command.
28. tIS(base) and tIH(base) values are for a single-ended 1 V/ns control/command/address
slew rate and 2 V/ns CK, CK# differential slew rate.
29. These parameters are measured from the input data strobe signal (DK/DK#) crossing to
its respective clock signal crossing (CK/CK#). The specification values are not affected by
the amount of clock jitter applied as they are relative to the clock signal crossing. These
parameters should be met whether or not clock jitter is present.
30. These parameters are measured from a command/address signal transition edge to its
respective clock (CK, CK#) signal crossing. The specification values are not affected by
the amount of clock jitter applied as the setup and hold times are relative to the clock
signal crossing that latches the command/address. These parameters should be met
whether or not clock jitter is present.
31. RESET# should be LOW as soon as power starts to ramp to ensure the outputs are in
High-Z. Until RESET# is LOW, the outputs are at risk of driving and could result in excessive current, depending on bus activity.
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1.125Gb: x18, x36 RLDRAM 3
AC Electrical Characteristics
32. If tWTR is violated, the data just written will not be read out when a READ command is
issued to the same address. Whatever data was previously written to the address will be
output with the READ command.
33. This specification is defined as any bank command (READ, WRITE, AREF) to a multi-bank
command or a multi-bank command to any bank command. This specification only applies to quad bank WRITE, 3-bank AREF and 4-bank AREF commands. Dual bank WRITE,
2-bank AREF, and all single bank access commands are not bound by this specification.
34. DRAM devices should be evenly addressed when being accessed. Disproportionate accesses to a particular row address may result in a reduction of REFRESH characteristics or
product lifetime.
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Temperature and Thermal Impedance Characteristics
Temperature and Thermal Impedance Characteristics
It is imperative that the device’s temperature specifications be maintained in order to
ensure that the junction temperature is in the proper operating range to meet data
sheet specifications. An important way to maintain the proper junction temperature is
to use the device’s thermal impedances correctly. Thermal impedances are listed for the
available packages.
Incorrectly using thermal impedances can produce significant errors. Read Micron
technical note TN-00-08, “Thermal Applications” prior to using thermal impedances
listed below.
The device’s safe junction temperature range can be maintained when the T C specification is not exceeded. In applications where the device’s ambient temperature is too
high, use of forced air and/or heat sinks may be required in order to meet the case temperature specifications.
Table 28: Temperature Limits
Parameter
Storage temperature
Reliability junction temperature
Commercial
Symbol
Min
Max
Units
Notes
TSTG
–55
150
°C
1
TJ(REL)
–
110
°C
2
–
110
°C
2
Industrial
Operating junction temperature
Commercial
TJ(OP)
Industrial
Operating case temperature
Commercial
TC
Industrial
Notes:
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0
100
°C
3
–40
100
°C
3
0
95
°C
4, 5
–40
95
°C
4, 5
1. MAX storage case temperature; TSTG is measured in the center of the package (see Figure 21 (page 50)). This case temperature limit is allowed to be exceeded briefly during
package reflow, as noted in Micron technical note TN-00-15.
2. Temperatures greater than 110°C may cause permanent damage to the device. This is a
stress rating only and functional operation of the device at or above this is not implied.
Exposure to absolute maximum rating conditions for extended periods may adversely
affect the reliability of the part.
3. Junction temperature depends upon package type, cycle time, loading, ambient temperature, and airflow.
4. MAX operating case temperature; TC is measured in the center of the package (see Figure 21 (page 50)).
5. Device functionality is not guaranteed if the device exceeds maximum TC during operation.
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Temperature and Thermal Impedance Characteristics
Table 29: Thermal Impedance
θ JA (°C/W)
Airflow = 0m/s
θ JA (°C/W)
Airflow = 1m/s
θ JA (°C/W)
Airflow = 2m/s
θ JB (°C/W)
θ JC (°C/W)
Low
conductivity
38.7
28.7
25.5
N/A
2.1
High
conductivity
21.8
17.2
16.0
6.4
N/A
Package
Substrate
BGA
Note:
1. Thermal impedance data is based on a number of samples from multiple lots, and
should be viewed as a typical number.
Figure 21: Example Temperature Test Point Location
Test point
13.5mm
6.75mm
6.75mm
13.5mm
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Command and Address Setup, Hold, and Derating
Command and Address Setup, Hold, and Derating
The total tIS (setup time) and tIH (hold time) required is calculated by adding the data
sheet tIS (base) and tIH (base) values (see Table 30 (page 51); values come from Table 27 (page 43)) to the ΔtIS and ΔtIH derating values (see Table 31 (page 52)), respectively. Example: tIS (total setup time) = tIS (base) + ΔtIS. For a valid transition, the input
signal must remain above/below V IH(AC)/VIL(AC) for some time tVAC (see Table 34
(page 53)).
Although the total setup time for slow slew rates might be negative (for example, a valid
input signal will not have reached V IH(AC)/VIL(AC) at the time of the rising clock transition), a valid input signal is still required to complete the transition and to reach V IH(AC)/
VIL(AC). For slew rates which fall between the values listed in Table 31 (page 52) and
Table 34 (page 53) for valid transition, the derating values may be obtained by linear
interpolation.
Setup (tIS) nominal slew rate for a rising signal is defined as the slew rate between the
last crossing of V REF(DC) and the first crossing of V IH(AC)min. Setup (tIS) nominal slew rate
for a falling signal is defined as the slew rate between the last crossing of V REF(DC) and
the first crossing of V IL(AC)max. If the actual signal is always earlier than the nominal slew
rate line between the shaded V REF(DC)-to-AC region, use the nominal slew rate for derating value (see Figure 22 (page 54)). If the actual signal is later than the nominal slew
rate line anywhere between the shaded V REF(DC)-to-AC region, the slew rate of a tangent
line to the actual signal from the AC level to the DC level is used for derating value (see
Figure 24 (page 56)).
Hold (tIH) nominal slew rate for a rising signal is defined as the slew rate between the
last crossing of V IL(DC)max and the first crossing of V REF(DC). Hold (tIH) nominal slew rate
for a falling signal is defined as the slew rate between the last crossing of V IH(DC)min and
the first crossing of V REF(DC). If the actual signal is always later than the nominal slew
rate line between the shaded DC-to-VREF(DC) region, use the nominal slew rate for derating value (see Figure 23 (page 55)). If the actual signal is earlier than the nominal slew
rate line anywhere between the shaded DC-to-VREF(DC) region, the slew rate of a tangent
line to the actual signal from the DC level to the V REF(DC) level is used for derating value
(see Figure 25 (page 57)).
Table 30: Command and Address Setup and Hold Values Referenced at 1 V/ns – AC/DC-Based
Symbol
RL3-2400
RL3-2133
RL3-1866
Units
Reference
tIS(base),AC150
70
85
120
ps
VIH(AC)/VIL(AC)
tIS(base),AC135
85
100
135
ps
VIH(AC)/VIL(AC)
tIS(base),AC120
100
115
150
ps
VIH(AC)/VIL(AC)
tIH(base),DC100
50
65
100
ps
VIH(DC)/VIL(DC)
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Command and Address Setup, Hold, and Derating
Table 31: Derating Values for tIS/tIH – AC150/DC100-Based
ΔtIS, ΔtIH Derating (ps) - AC/DC-Based AC 150 Threshold: VIH(AC) = VREF(DC) + 150mV, VIL(AC) = VREF(DC) - 150mV
CK, CK# Differential Slew Rate
CMD/ADDR
Slew Rate
(V/ns)
ΔtIS
ΔtIH
ΔtIS
ΔtIH
ΔtIS
ΔtIH
ΔtIS
ΔtIH
ΔtIS
ΔtIH
ΔtIS
ΔtIH
ΔtIS
ΔtIH
ΔtIS
ΔtIH
2.0
75
50
75
50
75
50
83
58
91
66
99
74
107
84
115
100
1.5
50
34
50
34
50
34
58
42
66
50
74
58
82
68
90
84
1.0
0
0
0
0
0
0
8
8
16
16
24
24
32
34
40
50
0.9
0
–4
0
–4
0
–4
8
4
16
12
24
20
32
30
40
46
0.8
0
–10
0
–10
0
–10
8
–2
16
6
24
14
32
24
40
40
0.7
0
–16
0
–16
0
–16
8
–8
16
0
24
8
32
18
40
34
0.6
–1
–26
–1
–26
–1
–26
7
–18
15
–10
23
–2
31
8
39
24
0.5
–10
–40
–10
–40
–10
–40
–2
–32
6
–24
14
–16
22
–6
30
10
0.4
–25
–60
–25
–60
–25
–60
–17
–52
–9
–44
–1
–36
7
–26
15
–10
4.0 V/ns
3.0 V/ns
2.0 V/ns
1.8 V/ns
1.6 V/ns
1.4 V/ns
1.2 V/ns
1.0 V/ns
Table 32: Derating Values for tIS/tIH – AC135/DC100-Based
ΔtIS, ΔtIH Derating (ps) - AC/DC-Based AC 135 Threshold: VIH(AC) = VREF(DC) + 135mV, VIL(AC) = VREF(DC) - 135mV
CK, CK# Differential Slew Rate
CMD/ADDR
Slew Rate
(V/ns)
ΔtIS
ΔtIH
ΔtIS
ΔtIH
ΔtIS
ΔtIH
ΔtIS
ΔtIH
ΔtIS
ΔtIH
ΔtIS
ΔtIH
ΔtIS
ΔtIH
ΔtIS
ΔtIH
2.0
68
50
68
50
68
50
76
58
84
66
92
74
100
84
108
100
1.5
45
34
45
34
45
34
53
42
61
50
69
58
77
68
85
84
1.0
0
0
0
0
0
0
8
8
16
16
24
24
32
34
40
50
0.9
0
–4
0
–4
0
–4
8
4
16
12
24
20
32
30
40
46
0.8
0
–10
0
–10
0
–10
8
–2
16
6
24
14
32
24
40
40
0.7
0
–16
0
–16
0
–16
8
–8
16
0
24
8
32
18
40
34
0.6
–1
–26
–1
–26
–1
–26
7
–18
15
–10
23
–2
31
8
39
24
0.5
–10
–40
–10
–40
–10
–40
–2
–32
6
–24
14
–16
22
–6
30
10
0.4
–25
–60
–25
–60
–25
–60
–17
–52
–9
–44
–1
–36
7
–26
15
–10
4.0 V/ns
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3.0 V/ns
2.0 V/ns
1.8 V/ns
52
1.6 V/ns
1.4 V/ns
1.2 V/ns
1.0 V/ns
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Command and Address Setup, Hold, and Derating
Table 33: Derating Values for tIS/tIH – AC120/DC100-Based
ΔtIS, ΔtIH Derating (ps) - AC/DC-Based AC 120 Threshold: VIH(AC) = VREF(DC) + 120mV, VIL(AC) = VREF(DC) - 120mV
CK, CK# Differential Slew Rate
CMD/ADDR
Slew Rate
(V/ns)
ΔtIS
ΔtIH
ΔtIS
ΔtIH
ΔtIS
ΔtIH
ΔtIS
ΔtIH
ΔtIS
ΔtIH
ΔtIS
ΔtIH
ΔtIS
ΔtIH
ΔtIS
ΔtIH
2.0
60
50
60
50
60
50
68
58
76
66
84
74
92
84
100
100
1.5
40
34
40
34
40
34
48
42
56
50
64
58
72
68
80
84
1.0
0
0
0
0
0
0
8
8
16
16
24
24
32
34
40
50
0.9
0
–4
0
–4
0
–4
8
4
16
12
24
20
32
30
40
46
0.8
0
–10
0
–10
0
–10
8
–2
16
6
24
14
32
24
40
40
0.7
0
–16
0
–16
0
–16
8
–8
16
0
24
8
32
18
40
34
0.6
–1
–26
–1
–26
–1
–26
7
–18
15
–10
23
–2
31
8
39
24
0.5
–10
–40
–10
–40
–10
–40
–2
–32
6
–24
14
–16
22
–6
30
10
0.4
–25
–60
–25
–60
–25
–60
–17
–52
–9
–44
–1
–36
7
–26
15
–10
4.0 V/ns
3.0 V/ns
2.0 V/ns
1.8 V/ns
1.6 V/ns
1.4 V/ns
1.2 V/ns
1.0 V/ns
Table 34: Minimum Required Time tVAC Above VIH(AC) (or Below VIL(AC)) for Valid Transition
tVAC
Slew Rate (V/ns)
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(ps)
>2.0
175
2.0
170
1.5
167
1.0
163
0.9
162
0.8
161
0.7
159
0.6
155
0.5
150
<0.5
150
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Command and Address Setup, Hold, and Derating
Figure 22: Nominal Slew Rate and tVAC for tIS (Command and Address – Clock)
tIS
tIH
tIS
tIH
CK
CK#
DK#
DK
VDDQ
tVAC
VIH(AC)min
VREF to AC
region
VIH(DC)min
Nominal
slew rate
VREF(DC)
Nominal
slew rate
VIL(DC)max
VREF to AC
region
VIL(AC)max
tVAC
VSS
TR
TF
Setup slew rate
falling signal =
Note:
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VREF(DC) - VIL(AC)max
Setup slew rate
=
rising signal
TF
VIH(AC)min - VREF(DC)
TR
1. Both the clock and the data strobe are drawn on different time scales.
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Command and Address Setup, Hold, and Derating
Figure 23: Nominal Slew Rate for tIH (Command and Address – Clock)
tIS
tIS
tIH
tIH
CK
CK#
DK#
DK
VDDQ
VIH(AC)min
VIH(DC)min
Nominal
slew rate
DC to VREF
region
VREF(DC)
DC to VREF
region
Nominal
slew rate
VIL(DC)max
VIL(AC)max
VSS
TR
Hold slew rate
rising signal =
Note:
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VREF(DC) - VIL(DC)max
TF
Hold slew rate
falling signal =
TR
VIH(DC)min - VREF(DC)
TF
1. Both the clock and the data strobe are drawn on different time scales.
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Command and Address Setup, Hold, and Derating
Figure 24: Tangent Line for tIS (Command and Address – Clock)
tIS
tIS
tIH
tIH
CK
CK#
DK#
DK
VDDQ
tVAC
Nominal
line
VIH(AC)min
VREF to AC
region
VIH(DC)min
Tangent
line
VREF(DC)
Tangent
line
VIL(DC)max
VREF to AC
region
VIL(AC)max
Nominal
line
TR
tVAC
VSS
TF
Note:
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Setup slew rate
rising signal =
Tangent line [V IH(DC)min - VREF(DC)]
Setup slew rate
falling signal =
Tangent line[ V REF(DC) - VIL(AC)max]
TR
TF
1. Both the clock and the data strobe are drawn on different time scales.
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Command and Address Setup, Hold, and Derating
Figure 25: Tangent Line for tIH (Command and Address – Clock)
tIS
tIH
tIS
tIH
CK
CK#
DK#
DK
VDDQ
VIH(AC)min
Nominal
line
VIH(DC)min
DC to VREF
region
Tangen t
line
VREF(DC)
DC to VREF
region
Tangen t
line
Nominal
line
VIL(DC)max
VIL(AC)max
VSS
TR
Hold slew rate
rising signal =
Hold slew rate
falling signal =
Note:
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TF
Tangent line [V REF(DC) - VIL(DC)max]
TR
Tangent line [V IH(DC)min - VREF(DC)]
TF
1. Both the clock and the data strobe are drawn on different time scales.
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Data Setup, Hold, and Derating
Data Setup, Hold, and Derating
The total tDS (setup time) and tDH (hold time) required is calculated by adding the data
sheet tDS (base) and tDH (base) values (see the table below; values come from Table 27
(page 43)) to the ΔtDS and ΔtDH derating values (see Table 36 (page 59)), respectively.
Example: tDS (total setup time) = tDS (base) + ΔtDS. For a valid transition, the input signal has to remain above/below V IH(AC)/VIL(AC) for some time tVAC (see Table 39
(page 60)).
Although the total setup time for slow slew rates might be negative (for example, a valid
input signal will not have reached V IH(AC)/VIL(AC)) at the time of the rising clock transition), a valid input signal is still required to complete the transition and to reach V IH/
VIL(AC). For slew rates which fall between the values listed in Table 36 (page 59) and
Table 39 (page 60), the derating values may obtained by linear interpolation.
Setup (tDS) nominal slew rate for a rising signal is defined as the slew rate between the
last crossing of V REF(DC) and the first crossing of V IH(AC)min. Setup (tDS) nominal slew
rate for a falling signal is defined as the slew rate between the last crossing of V REF(DC)
and the first crossing of V IL(AC)max. If the actual signal is always earlier than the nominal
slew rate line between the shaded V REF(DC)-to-AC region, use the nominal slew rate for
derating value (see Figure 26 (page 61)). If the actual signal is later than the nominal
slew rate line anywhere between the shaded V REF(DC)-to-AC region, the slew rate of a
tangent line to the actual signal from the AC level to the DC level is used for derating
value (see Figure 28 (page 63)).
Hold (tDH) nominal slew rate for a rising signal is defined as the slew rate between the
last crossing of V IL(DC)max and the first crossing of V REF(DC). Hold (tDH) nominal slew
rate for a falling signal is defined as the slew rate between the last crossing of V IH(DC)min
and the first crossing of V REF(DC). If the actual signal is always later than the nominal
slew rate line between the shaded DC-to-VREF(DC) region, use the nominal slew rate for
derating value (see Figure 27 (page 62)). If the actual signal is earlier than the nominal
slew rate line anywhere between the shaded DC-to-VREF(DC) region, the slew rate of a
tangent line to the actual signal from the DC-to-VREF(DC) region is used for derating value (see Figure 29 (page 64)).
Table 35: Data Setup and Hold Values (DKx, DKx# at 2 V/ns) – AC/DC-Based
Symbol
RL3-2400
RL3-2133
RL3-1866
Units
Reference
–35
–30
–15
ps
VIH(AC)/VIL(AC)
68
ps
VIH(AC)/VIL(AC)
75
ps
VIH(AC)/VIL(AC)
20
ps
VIH(DC)/VIL(DC)
70
ps
VIH(DC)/VIL(DC)
tDS(base),AC150
at 1 V/ns
tDS(base),AC135
at 2 V/ns
48
53
tDS(base),AC120
at 2 V/ns
55
60
tDH(base),DC100
at 1 V/ns
0
5
tDH(base),DC100
at 2 V/ns
50
55
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1.125Gb: x18, x36 RLDRAM 3
Data Setup, Hold, and Derating
Table 36: Derating Values for tDS/tDH – AC150/DC100-Based
Empty cells indicate slew rate combinations not supported
ΔtDS, ΔtDH Derating (ps) - AC/DC-Based
DKx, DKx# Differential Slew Rate
4.0 V/ns
3.0 V/ns
2.0 V/ns
1.8 V/ns
1.6 V/ns
1.4 V/ns
1.2 V/ns
1.0 V/ns
DQ Slew
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
Rate (V/ns) Δ DS Δ DH Δ DS Δ DH Δ DS Δ DH Δ DS Δ DH Δ DS Δ DH Δ DS Δ DH Δ DS Δ DH Δ DS ΔtDH
2.0
75
50
75
50
75
50
1.5
50
34
50
34
50
34
58
42
1.0
0
0
0
0
0
0
8
8
16
16
0
–4
0
–4
8
4
16
12
24
20
0
–10
8
–2
16
6
24
14
8
–8
0.9
0.8
0.7
0.6
32
24
16
0
24
8
32
18
40
34
15
–10
23
–2
31
8
39
24
14
–16
22
–6
30
10
7
–26
15
–10
0.5
0.4
Table 37: Derating Values for tDS/tDH – AC135/DC100-Based
Empty cells indicate slew rate combinations not supported
ΔtDS, ΔtDH Derating (ps) - AC/DC-Based
DKx, DKx# Differential Slew Rate
8.0 V/ns
7.0 V/ns
6.0 V/ns
5.0 V/ns
4.0 V/ns
3.0 V/ns
2.0 V/ns
1.8 V/ns
DQ Slew
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
Rate (V/ns) Δ DS Δ DH Δ DS Δ DH Δ DS Δ DH Δ DS Δ DH Δ DS Δ DH Δ DS Δ DH Δ DS Δ DH Δ DS ΔtDH
4.0
34
25
34
25
34
25
3.5
29
22
29
22
29
22
29
22
3.0
23
17
23
17
23
17
23
17
23
17
14
10
14
10
14
10
14
10
14
10
0
0
0
0
0
0
0
0
–23
–16
2.5
2.0
1.5
1.0
0.9
0.8
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59
0
0
–23
–16
–23
–16
–23
–16
–15
–8
–68
–50
–68
–50
–68
–50
–60
–42
–68
–50
–68
–50
–60
–42
–68
–50
–60
–42
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1.125Gb: x18, x36 RLDRAM 3
Data Setup, Hold, and Derating
Table 38: Derating Values for tDS/tDH – AC120/DC100-Based
Empty cells indicate slew rate combinations not supported
ΔtDS, ΔtDH Derating (ps) - AC/DC-Based
DKx, DKx# Differential Slew Rate
8.0 V/ns
7.0 V/ns
6.0 V/ns
5.0 V/ns
4.0 V/ns
3.0 V/ns
2.0 V/ns
1.8 V/ns
DQ Slew
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
Rate (V/ns) Δ DS Δ DH Δ DS Δ DH Δ DS Δ DH Δ DS Δ DH Δ DS Δ DH Δ DS Δ DH Δ DS Δ DH Δ DS ΔtDH
4.0
30
25
30
25
30
25
3.5
26
22
26
22
26
22
26
22
3.0
20
17
20
17
20
17
20
17
20
17
12
10
12
10
12
10
12
10
12
10
0
0
0
0
0
0
0
0
–20
–16
2.5
2.0
1.5
1.0
0.9
0
0
–20
–16
–20
–16
–20
–16
–12
–8
–60
–50
–60
–50
–60
–50
–52
–42
–60
–50
–60
–50
–52
–42
–60
–50
–52
–42
0.8
Table 39: Minimum Required Time tVAC Above VIH(AC) (or Below VIL(AC)) for Valid Transition
tVAC
Slew Rate (V/ns)
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(ps)
>2.0
175
2.0
170
1.5
167
1.0
163
0.9
162
0.8
161
0.7
159
0.6
155
0.5
150
<0.5
150
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Data Setup, Hold, and Derating
Figure 26: Nominal Slew Rate and tVAC for tDS (DQ – Strobe)
CK
CK#
DK#
DK
tDS
tDH
tDS
tDH
VDDQ
tVAC
VIH(AC)min
VREF to AC
region
VIH(DC)min
Nominal
slew rate
VREF(DC)
Nominal
slew rate
VIL(DC)max
VREF to AC
region
VIL(AC)max
tVAC
VSS
TF
Setup slew rate
=
falling signal
Note:
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TR
VREF(DC) - VIL(AC)max
TF
Setup slew rate
=
rising signal
VIH(AC)min - VREF(DC)
TR
1. Both the clock and the strobe are drawn on different time scales.
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Data Setup, Hold, and Derating
Figure 27: Nominal Slew Rate for tDH (DQ – Strobe)
CK
CK#
DK#
DK
tDS
tDH
tDS
tDH
VDDQ
VIH(AC)min
VIH(DC)min
Nominal
slew rate
DC to VREF
region
VREF(DC)
Nominal
slew rate
DC to VREF
region
VIL(DC)max
VIL(AC)max
VSS
TR
Hold slew rate
=
rising signal
Note:
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VREF(DC) - VIL(DC)max
TF
Hold slew rate
falling signal =
TR
VIH(DC)min - VREF(DC)
TF
1. Both the clock and the strobe are drawn on different time scales.
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Data Setup, Hold, and Derating
Figure 28: Tangent Line for tDS (DQ – Strobe)
CK
CK#
DK#
DK
tDS
tDH
tDS
tDH
VDDQ
Nominal
line
tVAC
VIH(AC)min
VREF to AC
region
VIH(DC)min
Tangent
line
VREF(DC)
Tangent
line
VIL(DC)max
VREF to AC
region
VIL(AC)max
Nominal
line
TR
tVAC
VSS
TF
Note:
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Setup slew rate
rising signal =
Tangent line [V IH(AC)min - VREF(DC)]
Setup slew rate
falling signal =
Tangent line [V REF(DC) - VIL(AC)max ]
TR
TF
1. Both the clock and the strobe are drawn on different time scales.
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Data Setup, Hold, and Derating
Figure 29: Tangent Line for tDH (DQ – Strobe)
CK
CK#
DK#
DK
tDS
tDH
tDS
tDH
VDDQ
VIH(AC)min
Nominal
line
VIH(DC)min
DC to VREF
region
Tangent
line
VREF(DC)
DC to VREF
region
Tangent
line
Nominal
line
VIL(DC)max
VIL(AC)max
VSS
TR
Note:
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TF
Hold slew rate
rising signal =
Tangent line [V REF(DC) - VIL(DC)max]
Hold slew rate
falling signal =
Tangent line [V IH(DC)min - VREF(DC)]
TR
TF
1. Both the clock and the strobe are drawn on different time scales.
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1.125Gb: x18, x36 RLDRAM 3
Commands
Commands
The following table provides descriptions of the valid commands of the RLDRAM 3 device. All command and address inputs must meet setup and hold times with respect to
the rising edge of CK.
Table 40: Command Descriptions
Command
Description
NOP
The NOP command prevents new commands from being executed by the DRAM.
Operations already in progress are not affected by NOP commands. Output values depend on command history.
MRS
Mode registers MR0, MR1, and MR2 are used to define various modes of programmable operations of
the DRAM. A mode register is programmed via the MODE REGISTER SET (MRS) command during initialization and retains the stored information until it is reprogrammed, RESET# goes LOW, or until the
device loses power. The MRS command can be issued only when all banks are idle, and no bursts are
in progress.
READ
The READ command is used to initiate a burst read access to a bank. The BA[3:0] inputs select a bank,
and the address provided on inputs A[19:0] select a specific location within a bank.
WRITE
The WRITE command is used to initiate a burst write access to a bank (or banks). MRS bits MR2[4:3]
select single, dual, or quad bank WRITE protocol. The BA[x:0] inputs select the bank(s) (x = 3, 2, or 1
for single, dual, or quad bank WRITE, respectively). The address provided on inputs A[19:0] select a
specific location within the bank. Input data appearing on the DQ is written to the memory array
subject to the DM input logic level appearing coincident with the data. If the DM signal is registered
LOW, the corresponding data will be written to memory. If the DM signal is registered HIGH, the corresponding data inputs will be ignored (that is, this part of the data word will not be written).
AREF
The AREF command is used during normal operation of the RLDRAM 3 to refresh the memory content of a bank. There are two methods by which the RLDRAM 3 can be refreshed, both of which are
selected within the mode register. The first method, bank address-controlled AREF, is identical to the
method used in RLDRAM2. The second method, multibank AREF, enables refreshing of up to four
banks simultaneously. More information is available in the Auto Refresh section. For both methods,
the command is nonpersistent, so it must be issued each time a refresh is required.
Table 41: Command Table
Note 1 applies to the entire table
Operation
Code
CS#
WE#
REF#
A[19:0]
BA[3:0]
Notes
NOP
NOP
H
X
X
X
X
MRS
MRS
L
L
L
OPCODE
OPCODE
READ
READ
L
H
H
A
BA
2
WRITE
WRITE
L
L
H
A
BA
2
AREF
L
H
L
A
BA
3
AUTO REFRESH
Notes:
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1. X = “Don’t Care;” H = logic HIGH; L = logic LOW; A = valid address; BA = valid bank address; OPCODE = mode register bits
2. Address width varies with burst length and configuration; see the Address Widths of
Different Burst Lengths table for more information.
3. Bank address signals (BA) are used only during bank address-controlled AREF; Address
signals (A) are used only during multibank AREF.
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1.125Gb: x18, x36 RLDRAM 3
MODE REGISTER SET (MRS) Command
MODE REGISTER SET (MRS) Command
The mode registers, MR0, MR1, and MR2, store the data for controlling the operating
modes of the memory. The MODE REGISTER SET (MRS) command programs the
RLDRAM 3 operating modes and I/O options. During an MRS command, the address
inputs are sampled and stored in the mode registers. The BA[1:0] signals select between
mode registers 0–2 (MR0–MR2). After the MRS command is issued, each mode register
retains the stored information until it is reprogrammed, until RESET# goes LOW, or until the device loses power.
After issuing a valid MRS command, tMRSC must be met before any command can be
issued to the RLDRAM 3. The MRS command can be issued only when all banks are
idle, and no bursts are in progress.
Figure 30: MRS Command Protocol
CK#
CK
CS#
WE#
REF#
Address
OPCODE
Bank
Address
OPCODE
Don’t Care
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Mode Register 0 (MR0)
Mode Register 0 (MR0)
Figure 31: MR0 Definition for Non-Multiplexed Address Mode
BA3 BA2 BA1 BA0 A20 ... A10 A9 A8 A7 A6 A5 A4 A3 A2 A1 A0
24 23 22 21
01 01 MRS
9 8 7 6 5 4
AM DLL Data Latency
20-10
Reserved
3
2
1
0
Address Bus
Mode Register (Mx)
tRC_MRS
M7 M6 M5 M4 Data Latency (RL & WL)
M22 M21
Mode Register Definition
0
0
Mode Register 0 (MR0)
0
1
Mode Register 1 (MR1)
1
0
Mode Register 2 (MR2)
1
1
Reserved
Notes:
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0
0
0
0
RL = 3 ; WL = 4
0
0
0
1
RL = 4 ; WL = 5
Enable
0
0
1
0
RL = 5 ; WL = 6
0
0
0
0
Disable
Reserved
0
0
1
1
RL = 6 ; WL = 7
0
0
0
1
0
1
0
0
RL = 7 ; WL = 8
0
0
1
0
32
42
0
1
0
1
RL = 8 ; WL = 9
0
0
1
1
5
0
1
1
0
RL = 9 ; WL = 10
0
1
0
0
6
0
1
1
0
1
0
1
0
RL = 10 ; WL = 11
RL = 11 ; WL = 12
0
1
0
1
7
0
1
1
0
8
1
0
0
1
RL = 12 ; WL = 13
1
0
1
0
RL = 13 ; WL = 14
0
1
1
0
1
0
1
0
1
0
1
1
RL = 14 ; WL = 15
1
0
0
1
9
Reserved
Reserved
1
1
0
0
RL = 15 ; WL = 16
1
0
1
0
Reserved
1
1
0
1
1
0
1
1
Reserved
1
1
1
0
RL = 16 ; WL = 17
RL = 17 ; WL = 18
1
1
0
0
Reserved
1
1
1
1
RL = 18 ; WL = 19
1
1
0
1
Reserved
1
1
1
0
Reserved
1
1
1
1
Reserved
M8
DLL Enable
0
1
M9
Address MUX
0
Non-multiplexed
1
Multiplexed
M3 M2 M1 M0
t RC_MRS
1. BA2, BA3, and all address balls corresponding to reserved bits must be held LOW during
the MRS command.
2. BL8 not allowed.
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Mode Register 0 (MR0)
tRC
Bits MR0[3:0] select the number of clock cycles required to satisfy the tRC specifications.
After a READ, WRITE, or AREF command is issued to a bank, a subsequent READ,
WRITE, or AREF cannot be issued to the same bank until tRC has been satisfied. The
correct value (tRC_MRS) to program into MR0[3:0] is shown in the table below.
Table 42: tRC_MRS MR0[3:0] Values
-083F
-083E
-093F
-093E
-107E
RL = 3; WL = 4
Parameter
3
3
3
3
Reserved
RL = 4; WL = 5
3
3
3
3
3
RL = 5; WL = 6
3
3
3
3
3
RL = 6; WL = 7
3
3
3
4
3
RL = 7; WL = 8
3
3
3
4
4
RL = 8; WL = 9
4
4
4
5
4
RL = 9; WL = 10
4
4
4
5
5
RL = 10; WL = 11
5
5
5
6
5
RL = 11; WL = 12
5
5
5
6
6
RL = 12; WL = 13
6
6
6
7
6
RL = 13; WL = 14
6
6
6
7
7
RL = 14; WL = 15
7
8
8
8
7
RL = 15; WL = 16
7
8
8
8
8
RL = 16; WL = 17
8
8
8
9
Reserved
RL = 17; WL = 18
8
8
8
9
Reserved
RL = 18; WL = 19
8
9
Reserved
Reserved
Reserved
Data Latency
The data latency register uses MR0[7:4] to set both the READ and WRITE latency (RL
and WL). The valid operating frequencies for each data latency register setting can be
found in Table 27 (page 43).
DLL Enable/Disable
Through the programming of MR0[8], the DLL can be enabled or disabled.
The DLL must be enabled for normal operation. The DLL must be enabled during the
initialization routine and upon returning to normal operation after having been disabled for the purpose of debugging or evaluation. To operate the RLDRAM with the DLL
disabled, the tRC MRS setting must equal the read latency (RL) setting. Enabling the
DLL should always be followed by resetting the DLL using the appropriate MR1 command.
Address Multiplexing
Although the RLDRAM has the ability to operate similar to an SRAM interface by accepting the entire address in one clock (non-multiplexed, or broadside addressing),
MR0[9] can be set to 1 so that it functions with multiplexed addressing, similar to a traPDF: 09005aef85a88362
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Mode Register 0 (MR0)
ditional DRAM. In multiplexed address mode, the address is provided to the RLDRAM
in two parts that are latched into the memory with two consecutive rising edges of CK.
When in multiplexed address mode, only 11 address balls are required to control the
RLDRAM, as opposed to 20 address balls when in non-multiplexed address mode. The
data bus efficiency in continuous burst mode is only affected when using the BL = 2 setting because the device requires two clocks to read and write data. During multiplexed
mode, the bank addresses as well as WRITE and READ commands are issued during the
first address part, Ax. The Address Mapping in Multiplexed Address Mode table shows
the addresses needed for both the first and second rising clock edges (Ax and Ay, respectively).
After MR0[9] is set HIGH, READ, WRITE, and MRS commands follow the format described in the Command Description in Multiplexed Address Mode figure. Refer to Multiplexed Address Mode for further information on operation with multiplexed addressing.
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Mode Register 1 (MR1)
Mode Register 1 (MR1)
Figure 32: MR1 Definition for Non-Multiplexed Address Mode
BA3 BA2 BA1 BA0 A20 ... A11 A10 A9 A8 A7 A6 A5 A4 A3 A2 A1 A0 Address Bus
24 23 22 21 20-11
01 MRS Reserved
01
M22 M21
10 9 8 7 6 5
BL Ref ZQe ZQ DLL
M10 M9 Burst Length
Mode Register Definition
M5 DLL Reset
0
0
Mode Register 0 (MR0)
0
0
2
0
No
0
1
Mode Register 1 (MR1)
0
1

1
Yes
1
0
Mode Register 2 (MR2)
1
0

Reserved
1
1
Reserved
1
1
Notes:
4 3
ODT
2
1
0
Mode Register (Mx)
Drive
M4 M3 M2
ODT
0
0
0
Off
0
0
RZQ/6 (40
0
0
1
RZQ/6 (40
0
1
RZQ/4 (60
0
1
0
RZQ/4 (60
1
0
Reserved
RZQ/2 (120
1
1
Reserved
M6 ZQ Calibration Selection
0
1
1
0
Short ZQ Calibration
1
0
0
Reserved
1
Long ZQ Calibration
1
0
1
Reserved
1
1
0
Reserved
1
1
1
Reserved
M8
AREF Protocol
M7
0
Bank Address Control
0
Disabled - Default
1
Multibank
1
Enable
ZQ Calibration Enable
M1 M0 Output Drive
1. BA2, BA3, and all address balls corresponding to reserved bits must be held LOW during
the MRS command.
2. BL8 not available in x36.
Output Drive Impedance
The RLDRAM 3 uses programmable impedance output buffers, which enable the user
to match the driver impedance to the system. MR1[0] and MR1[1] are used to select 40Ω
or 60Ω output impedance, but the device powers up with an output impedance of 40Ω.
The drivers have symmetrical output impedance. To calibrate the impedance a 240Ω
±1% external precision resistor (RZQ) is connected between the ZQ ball and V SSQ.
The output impedance is calibrated during initialization through the ZQCL mode register setting. Subsequent periodic calibrations (ZQCS) may be performed to compensate
for shifts in output impedance due to changes in temperature and voltage. More detailed information on calibration can be found in the ZQ Calibration section.
DQ On-Die Termination (ODT)
MR1[4:2] are used to select the value of the on-die termination (ODT) for the DQ, DKx
and DM balls. When enabled, ODT terminates these balls to V DDQ/2. The RLDRAM 3
device supports 40ΩΩ, or 120Ω ODT. The ODT function is dynamically switched off
when a DQ begins to drive after a READ command has been issued. Similarly, ODT is
designed to switch on at the DQs after the RLDRAM has issued the last piece of data.
The DM and DKx balls are always terminated after ODT is enabled.
DLL Reset
Programming MR1[5] to 1 activates the DLL RESET function. MR1[5] is self-clearing,
meaning it returns to a value of 0 after the DLL RESET function has been initiated.
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1.125Gb: x18, x36 RLDRAM 3
Mode Register 1 (MR1)
Whenever the DLL RESET function is initiated, CK/CK# must be held stable for 512
clock cycles before a READ command can be issued. This is to allow time for the internal clock to be synchronized with the external clock. Failing to wait for synchronization
to occur may cause output timing specifications, such as tCKQK, to be invalid.
ZQ Calibration
The ZQ CALIBRATION mode register command is used to calibrate the DRAM output
drivers (RON) and ODT values (RTT) over process, voltage, and temperature, provided a
dedicated 240Ω (±1%) external resistor is connected from the DRAM’s RZQ ball to V SSQ.
Bit MR1[6] selects between ZQ calibration long (ZQCL) and ZQ calibration short
(ZQCS), each of which are described in detail below. When bit MR1[7] is set HIGH, it
enables the calibration sequence. Upon completion of the ZQ calibration sequence,
MR1[7] automatically resets LOW.
The RLDRAM 3 needs a longer time to calibrate RON and ODT at power-up initialization
and a relatively shorter time to perform periodic calibrations. An example of ZQ calibration timing is shown below.
All banks must have tRC met before ZQCL or ZQCS mode register settings can be issued
to the DRAM. No other activities (other than loading another ZQCL or ZQCS mode register setting may be issued to another DRAM) can be performed on the DRAM channel
by the controller for the duration of tZQinit or tZQoper. The quiet time on the DRAM
channel helps accurately calibrate RON and ODT. After DRAM calibration is achieved,
the DRAM will disable the ZQ ball’s current consumption path to reduce power.
ZQ CALIBRATION mode register settings can be loaded in parallel to DLL reset and
locking time.
In systems that share the ZQ resistor between devices, the controller must not allow
overlap of tZQinit, tZQoper, or tZQcs between devices.
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Mode Register 1 (MR1)
Figure 33: ZQ Calibration Timing (ZQCL and ZQCS)
T0
T1
Ta0
Ta1
Ta2
Ta3
Tb0
Tb1
Tc0
Tc1
Tc2
Command
MRS
NOP
NOP
NOP
Valid
Valid
MRS
NOP
NOP
NOP
Valid
Address
ZQCL
Valid
Valid
ZQCS
CK#
CK
DQ
Valid
Activities
Activities
Activities
Activities
QK#
QK
QVLD
tZQinit or tZQoper
tZQCS
Indicates a break in
time scale
Don’t Care
or Unknown
1. All devices connected to the DQ bus should be held High-Z during calibration.
2. The state of QK and QK# are unknown during ZQ calibration.
3. tMRSC after loading the MR1 settings, QVLD output drive strength will be at the value
selected or lower until ZQ calibration is complete.
Notes:
ZQ Calibration Long
The ZQ calibration long (ZQCL) mode register setting is used to perform the initial calibration during a power-up initialization and reset sequence. It may be loaded at any
time by the controller depending on the system environment. ZQCL triggers the calibration engine inside the DRAM. After calibration is achieved, the calibrated values are
transferred from the calibration engine to the DRAM I/O, which are reflected as updated RON and ODT values.
The DRAM is allowed a timing window defined by either tZQinit or tZQoper to perform
the full calibration and transfer of values. When ZQCL is issued during the initialization
sequence, the timing parameter tZQinit must be satisfied. When initialization is complete, subsequent loading of the ZQCL mode register setting requires the timing parameter tZQoper to be satisfied.
ZQ Calibration Short
The ZQ calibration short (ZQCS) mode register setting is used to perform periodic calibrations to account for small voltage and temperature variations. The shorter timing
window is provided to perform the reduced calibration and transfer of values as defined
by timing parameter tZQCS. ZQCS can effectively correct a minimum of 0.5% RON and
RTT impedance error within tZQCS clock cycles, assuming the maximum sensitivities
specified in the ODT Temperature and Voltage Sensitivity and the Output Driver Voltage
and Temperature Sensitivity tables.
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Mode Register 1 (MR1)
AUTO REFRESH Protocol
The AUTO REFRESH (AREF) protocol is selected with bit MR1[8]. There are two ways in
which AREF commands can be issued to the RLDRAM. Depending upon how bit
MR1[8] is programmed, the memory controller can issue either bank address-controlled or multibank AREF commands. Bank address-controlled AREF uses the BA[3:0] inputs to refresh a single bank per command. Multibank AREF is enabled by setting bit
MR1[8] HIGH during an MRS command. This refresh protocol enables the simultaneous refreshing of a row in up to four banks. In this method, the address pins A[15:0] represent banks 0–15, respectively. More information on both AREF protocols can be found
in AUTO REFRESH Command (page 83).
Burst Length (BL)
Burst length is defined by MR1[9] and MR1[10]. Read and write accesses to the
RLDRAM are burst-oriented, with the burst length being programmable to 2, 4, or 8.
Figure 34 (page 74) shows the different burst lengths with respect to a READ command. Changes in the burst length affect the width of the address bus (see the following
table for details).
The data written by the prior burst length is not guaranteed to be accurate when the
burst length of the device is changed.
Table 43: Address Widths of Different Burst Lengths
Configuration
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Burst Length
x18
x36
2
A[20:0]
A[19:0]
4
A[19:0]
A[18:0]
8
A[18:0]
NA
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Mode Register 1 (MR1)
Figure 34: Read Burst Lengths
CK#
T0
T1
T2
T3
T4
T4n
READ
NOP
NOP
NOP
NOP
T5
T5n
T6
T6n
T7
T7n
CK
Command
Address
NOP
NOP
NOP
NOP
Bank a,
Col n
RL = 4
QK#
BL = 2
QK
QVLD
DO
an
DQ
QK#
BL = 4
QK
QVLD
DO
an
DQ
QK#
BL = 8
QK
QVLD
DO
an
DQ
Transitioning Data
Note:
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Don’t Care
1. DO an = data-out from bank a and address n.
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1.125Gb: x18, x36 RLDRAM 3
Mode Register 2 (MR2)
Mode Register 2 (MR2)
Figure 35: MR2 Definition for Non-Multiplexed Address Mode
BA3 BA2 BA1 BA0
24 23 22 21
01 01 MRS
M22 M21
0
Mode Register 0 (MR0)
0
1
Mode Register 1 (MR1)
1
0
A7
A5 A4 A3 A2 A1 A0 Address Bus
A6
5 4 3 2
7
6
En
PPR Reserved WRITE
20-8
Reserved
1 0
RTR
Mode Register (Mx)
Mode Register Definition
0
1
A20 ... A8
Mode Register 2 (MR2)
1
Reserved
M5 M4 M3
READ Training Register
PPR
0
Disabled
0
0
0-1-0-1 on all DQs
1
Enabled
0
1
Even DQs: 0-1-0-1 ; Odd DQs: 1-0-1-0
1
0
Reserved
1
1
Reserved
WRITE Protocol
0
0
0
0
0
1
Single Bank
Dual Bank (8 bank offset [same as F67R])
0
0
1
1
1
1
0
0
0
1
0
1
Quad Bank (4 bank offset [same as F67R])
Dual Bank (sequential - i.e. 0-1, 1-2, 2-3, etc.)
1
1
1
1
0
1
Note:
M1 M0
M7
M2 READ Training Register Enable
0
Normal RLDRAM Operation
1
READ Training Enabled
Quad Bank (sequential - i.e. 0-1-2-3, 1-2-3-4, etc.)
Reserved
Reserved
Reserved
1. BA2, BA3, and all address balls corresponding to reserved bits must be held LOW during
the MRS command.
READ Training Register (RTR)
The READ training register (RTR) is controlled through MR2[2:0]. It is used to output a
predefined bit sequence on the output balls to aid in system timing calibration. MR2[2]
is the master bit that enables or disables access to the READ training register, and
MR2[1:0] determine which predefined pattern for system calibration is selected. If
MR2[2] is set to 0, the RTR is disabled, and the DRAM operates in normal mode. When
MR2[2] is set to 1, the DRAM no longer outputs normal read data, but a predefined pattern that is defined by MR2[1:0].
Prior to enabling the RTR, all banks must be in the idle state (tRC met). When the RTR is
enabled, all subsequent READ commands will output four bits of a predefined sequence from the RTR on all DQs. The READ latency during RTR is defined with the data
latency bits in MR0. To loop on the predefined pattern when the RTR is enabled, successive READ commands must be issued and satisfy tRTRS. Address balls A[19:0] are considered "Don't Care" during RTR READ commands. Bank address bits BA[3:0] must access Bank 0 with each RTR READ command. tRC does not need to be met in between
RTR READ commands to Bank 0. When the RTR is enabled, only READ commands are
allowed. When the last RTR READ burst has completed and tRTRE has been satisfied, an
MRS command can be issued to exit the RTR. Standard RLDRAM 3 operation may then
start after tMRSC has been met. The RESET function is supported when the RTR is enabled.
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Mode Register 2 (MR2)
If MR2[1:0] is set to 00 a 0-1-0-1 pattern will be output on all DQs with each RTR READ
command. If MR2[1:0] is set to 01, a 0-1-0-1 pattern will output on all even DQs and the
opposite pattern, a 1-0-1-0, will output on all odd DQs with each RTR READ command.
Note: Enabling RTR may corrupt previously written data.
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Figure 36: READ Training Function - Back-to-Back Readout
T0
CK#
CK
Command
Address
Bank
DM
QK#
QK
DK#
DK
((
))
((
))
T1
T2
T3
T4
T5
READ
NOP
READ
NOP
READ
T6
T7
T8
T9
READ
NOP
READ
NOP
( T10
(
))
((
))
T12
NOP
MRS
MRS
((
))
((
))
MR2[17:0]
((
))
((
))
((
))
((
))
MR2[17:0]
MR2[21:18]
((
))
((
))
((
))
((
))
MR2[21:18]
BANK 0
BANK 0
NOP
BANK 0
BANK 0
BANK 0
((
))
((
))
T11
NOP
((
))
((
))
((
))
((
))
T13
VALID
((
))
((
))
((
))
((
))
((
))
((
))
((
))
((
))
((
))
((
))
((
))
((
))
((
))
((
))
((
))
((
))
((
))
((
))
((
))
((
))
RL
tMRSC
QVLD
DQ
tRTRS
tRTRS
tRTRS
tRTRS
tRTRE
((
))
((
))
((
))
((
))
Transitioning Data
77
Note:
tMRSC
((
))
((
))
((
))
((
))
((
))
((
))
((
))
((
))
Don’t Care
((
) ) Indicates a break
((
) ) in time scale
1. RL = READ latency defined with data latency MR0 setting.
1.125Gb: x18, x36 RLDRAM 3
Mode Register 2 (MR2)
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1.125Gb: x18, x36 RLDRAM 3
Post Package Repair – PPR
WRITE Protocol
Single or multibank WRITE operation is programmed with bits MR2[5:3]. The purpose
of multibank WRITE operation is to reduce the effective tRC during READ commands.
When dual- or quad-bank WRITE protocol is selected, identical data is written to two or
four banks, respectively. With the same data stored in multiple banks on the RLDRAM,
the memory controller can select the appropriate bank to READ the data from and minimize tRC delay. Detailed information on the multibank WRITE protocol can be found
in Multibank WRITE (page 80).
Post Package Repair – PPR
This section provides guidance on the implementation of post package repair (PPR).
PPR supports 1 row repair per bank.
The controller provides the failing bank and address in the PPR sequence to the DRAM
to perform the row repair.
PPR Row Repair Sequence
During the RLDRAM3 initialization sequence, RESET# must be LOW.
All banks must be idle before and during the PPR process.
All PPR DRAM timings must be followed as shown Figure 37 (page 79).
All other commands except those listed in the following sequence are illegal.
1. Issue MR2 7[1] command to enter PPR mode enable
2. Issue the following 4 MR0 qualifying commands:
a. MR0 14[0], 13[1], 11:10[1], 9:8[0],7:0[1]
b. MR0 14[0], 13[1], 11[0], 10:0[1]
c. MR0 14[0], 13[1], 11[1], 10:[0], 9:0[1]
d. MR0 14[0], 13[1], 11:10[0], 9:0[1]
3. WRITE command executes PPR.
NOTE: Program time (tPGM = 500ms):
a. Issue WR command with failing bank address (BA) and address.
b. At tWL DQ[8:0] must be LOW at first rising DK edge. If DDP x36, both sets of
lower DQs, DQ[8:0] (for die 0) and DQ[26:18] (DQs 8:0 for die 1) must also be
held LOW.
4. Issue MR2[7:0] command to exit PPR.
a. Wait tPGMSP time (50μs) for PPR mode exit to complete.
The entire sequence may be repeated if more than one repair is needed.
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Figure 37: Entry, Repair, and Exit Timing Diagram
T0
T1
Ta0
Ta1
Tb0
Tb1
Tc0
Tc1
Td0
Td1
Te0
Te1
Te2
Tf0
Tf1
Tg0
Tg1
Th0
CMD
LMR
NOP
LMR
NOP
LMR
NOP
LMR
NOP
LMR
NOP
WR
NOP
NOP
NOP
NOP
LMR
NOP
VALID
BA
2
NA
0
NA
0
NA
0
NA
0
NA
BA
NA
NA
NA
NA
2
NA
VALID
VALID
VALID
NA
VALID
VALID
NA
VALID
VALID
NA
VALID
VALID
NA
VALID
VALID
NA
VALID
NA
NA
NA
NA
VALID
NA
VALID
CK#
CK
ADDR
CKE
tWL
DK#
DK
DQ 8:0 [0]
DQs
(All other DQs = don’t care)
All Banks &
DQs in
idle state
tMRSC
Normal
Mode
PPR Entry
14:8[0],7[1], 6:0[0]
tMRSC
PPR Qualifing Command #1
14[0],13[1], 11:10[1], 9:8[0], 7:0[1]
tMRSC
PPR Qualifing Command #2
14[0],13[1], 11[0], 10:0[1]
tMRSC
tPGM
tMRSC
PPR Qualifing Command #3
PPR Qualifing Command #4
14[0],13[1], 11[1], 10[0], 9:0[1]
14[0],13[1],11:10[0],9:0[1]
tPGMSPT
Normal
Mode
PPR Exit
PPR Repair
14:8[0],7[0], 6:0[0]
(Repair ADDRESS)
Table 44: RLDRAM3 PPR Timing Parameters
Parameter
PPR programming time
PPR exit time
Symbol
Min
Max
Unit
tPGM
500
–
ms
tPGMSPT
50
–
μs
79
1.125Gb: x18, x36 RLDRAM 3
Post Package Repair – PPR
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WRITE Command
WRITE Command
Write accesses are initiated with a WRITE command. The address needs to be provided
concurrent with the WRITE command.
During WRITE commands, data will be registered at both edges of DK, according to the
programmed burst length (BL). The RLDRAM operates with a WRITE latency (WL) determined by the data latency bits within MR0. The first valid data is registered at the first
rising DK edge WL cycles after the WRITE command.
Any WRITE burst may be followed by a subsequent READ command (assuming tRC is
met). Depending on the amount of input timing skew, an additional NOP command
might be necessary between WRITE and READ commands to avoid external data bus
contention (see Figure 45 (page 88)).
Setup and hold times for incoming DQ relative to the DK edges are specified as tDS and
tDH. The input data is masked if the corresponding DM signal is HIGH.
Figure 38: WRITE Command
CK#
CK
CS#
WE#
REF#
Address
A
Bank
Address
BA
Don’t Care
Multibank WRITE
All the information provided above in the WRITE section is applicable to a multibank
WRITE operation as well. Either two or four banks can be simultaneously written to
when the appropriate MR2[5:3] mode register bits are selected.
If one of the dual-bank WRITE setting has been selected through the mode register,
both banks will be written to simultaneously with identical data provided during the
WRITE command. The two banks that will be written will depend upon the dual bank
write selection. Sequential = x and x + 1 (for example, B0-B1, B1-B2, B4-B5, and so on). 8
bank offset = x and x + 8 (for example, B0-B8, B1-B9, B4-B12, and so on). When a dualbank WRITE command is issued the supplied bank address is the beginning bank of the
multiple banks to be written.
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READ Command
The same methodology is used when one of the quad-bank WRITE modes have been
selected through the mode register. Sequential = x and x + 1 x + 2 and x + 3 (for example,
B0-B1-B2-B3, B1-B2-B3-B4, B4-B5-B6-B7, and so on). 4 bank offset = x and x + 4 x + 8
and x + 12 (for example, B0-B4-B8-B12, B1-B5-B9-B13, B3-B7-B11-B15, and so on).
When a quad-bank WRITE command is issued the supplied bank address is the beginning bank of the multiple banks to be written.
The timing parameter tSAW must be adhered to when operating with multibank WRITE
commands. This parameter limits the number of active banks to 16 within an 8ns window. The tMMD specification must also be followed if the quad-bank WRITE is being
used. This specification requires two clock cycles between any bank command (READ,
WRITE, or AREF) to a quad-bank WRITE or a quad-bank WRITE to any bank command.
The data bus efficiency is not compromised if BL4 or BL8 is being used.
READ Command
Read accesses are initiated with a READ command (see the figure below). Addresses are
provided with the READ command.
During READ bursts, the memory device drives the read data so it is edge-aligned with
the QK signals. After a programmable READ latency, data is available at the outputs.
One half clock cycle prior to valid data on the read bus, the data valid signal(s), QVLD,
transitions from LOW to HIGH. QVLD is also edge-aligned with the QK signals.
The skew between QK and the crossing point of CK is specified as tCKQK. tQKQx is the
skew between a QK pair and the last valid data edge generated at the DQ signals in the
associated byte group, such as DQ[7:0] and QK0. tQKQx is derived at each QK clock edge
and is not cumulative over time. For the x36 device, the tQKQ02 and tQKQ13 specifications define the relationship between the DQs and QK signals within specific data word
groupings. tQKQ02 defines the skew between QK0 and DQ[26:18] and between QK2 and
DQ[8:0]. tQKQ13 defines the skew between QK1 and DQ[35:17] and between QK3 and
DQ[17:9].
After completion of a burst, assuming no other commands have been initiated, output
data (DQ) will go High-Z. The QVLD signal transitions LOW on the last bit of the READ
burst. The QK clocks are free-running and will continue to cycle after the read burst is
complete. Back-to-back READ commands are possible, producing a continuous flow of
output data.
Any READ burst may be followed by a subsequent WRITE command. Some systems
having long line lengths or severe skews may need an additional idle cycle inserted between READ and WRITE commands to prevent data bus contention.
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1.125Gb: x18, x36 RLDRAM 3
READ Command
Figure 39: READ Command
CK#
CK
CS#
WE#
REF#
Address
A
Bank
Address
BA
Don’t Care
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1.125Gb: x18, x36 RLDRAM 3
AUTO REFRESH Command
AUTO REFRESH Command
The RLDRAM 3 device uses two unique AUTO REFRESH (AREF) command protocols,
bank address-controlled AREF and multibank AREF. The desired protocol is selected by
setting MR1[8] LOW (for bank address-controlled AREF) or HIGH (for multibank AREF)
during an MRS command. Bank address-controlled AREF is identical to the method
used in RLDRAM2 devices, whereby banks are refreshed independently. The value on
bank addresses BA[3:0], issued concurrently with the AREF command, define which
bank is to be refreshed. The array address is generated by an internal refresh counter,
effectively making each address bit a "Don't Care" during the AREF command. The delay between the AREF command and a subsequent command to the same bank must be
at least tRC.
Figure 40: Bank Address-Controlled AUTO REFRESH Command
CK#
CK
CS#
WE#
REF#
Address
Bank
Address
BA[3:0]
Don’t Care
The multibank AREF protocol, enabled by setting bit MR1[8] HIGH during an MRS
command, enables the simultaneous refresh of a row in up to four banks. In this method, address balls A[15:0] represent banks [15:0], respectively. The row addresses are generated by an internal refresh counter for each bank; therefore, the purpose of the address balls during an AREF command is only to identify the banks to be refreshed. The
bank address balls BA[3:0] are considered "Don't Care" during a multibank AREF command.
A multibank AUTO REFRESH is performed for a given bank when its corresponding address ball is asserted HIGH during an AREF command. Any combination of up to four
address balls can be asserted HIGH during the rising clock edge of an AREF command
to simultaneously refresh a row in each corresponding bank. The delay between an
AREF command and subsequent commands to the banks refreshed must be at least
tRC. Adherence to tSAW must be followed when simultaneously refreshing multiple
banks. If refreshing three or four banks with the multibank AREF command, tMMD
must be followed. This specification requires two clock cycles between any bank command (READ, WRITE, AREF) to the multibank AREF or the multibank AREF to any bank
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1.125Gb: x18, x36 RLDRAM 3
AUTO REFRESH Command
command. Note that refreshing one or two banks with the multibank AREF command is
not subject to the tMMD specification.
The entire device must be refreshed every 64ms (tREF). The RLDRAM device requires
128K cycles at an average periodic interval of 0.489μs MAX (64ms/[8K rows x 16 banks]).
To allow for improved efficiency in scheduling and switching between tasks, some flexibility in the absolute refresh interval is provided. A maximum of 128 subsequent refresh
commands can be issued as long as these commands are distributed among all 16
banks with no more than 8 refreshes per bank. Every access must ensure that tRC of the
bank has been meet and no more than 128 refreshes can be issued within 128 × average
periodic interval of 0.489μs (128 × 0.489μs = 62.59μs).
Figure 41: Multibank AUTO REFRESH Command
CK#
CK
CS#
WE#
REF#
Address
A[15:0]
Bank
Address
Don’t Care
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1.125Gb: x18, x36 RLDRAM 3
INITIALIZATION Operation
INITIALIZATION Operation
The RLDRAM 3 device must be powered up and initialized in a predefined manner. Operational procedures other than those specified may result in undefined operations or
permanent damage to the device.
The following sequence is used for power-up:
1. Ensure that RESET# is below 0.2 × V DDQ during power ramp to ensure the outputs
remain disabled (High-Z) and ODT is off (RTT is also High-Z). DQs and QK signals
will remain High-Z until MR0 command. TCK must remain stable during the power ramp, initialization, and non JTAG operation. All other inputs may be undefined
during the power ramp.
2. Apply power (VEXT, V DD, V DDQ). Apply V DD and V EXT before, or at the same time as,
VDDQ. V DD must not exceed V EXT during power supply ramp. V EXT, V DD, V DDQ must
all ramp to their respective minimum DC levels within 200ms.
3. After the power is stable, RESET# must remain LOW for at least 200μs prior to beginning the initialization process.
4. After 100 or more stable input clock cycles with NOP commands, bring RESET#
HIGH.
5. After RESET# goes HIGH, a stable clock must be applied in conjunction with NOP
commands and all address pins, including the bank address pins to be held LOW
for 10,000 cycles.
6. Load desired settings into MR0.
7. tMRSC after loading the MR0 settings, load operating parameters in MR1, including DLL reset and long ZQ calibration.
8. After the DLL is reset and long ZQ calibration is enabled, the input clock must be
stable for tZQinit clock cycles while NOPs are issued.
9. Load desired settings into MR2. If using the RTR, follow the procedure outlined in
the READ Training Function – Back-to-Back Readout figure prior to entering normal operation.
10. The RLDRAM 3 is ready for normal operation.
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1.125Gb_rldram3.pdf – Rev. A 9/15 EN
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1.125Gb: x18, x36 RLDRAM 3
INITIALIZATION Operation
Figure 42: Power-Up/Initialization Sequence
T (MAX) = 200ms
VDD
See power-up
conditions
in the
initialization
sequence text
VDDQ
VEXT
VREF
RESET#
RESET must asserted low during power-up
Power-up
ramp
Stable and
valid clock
tCK
CK#
CK
tCH
100 cycles
tCL
tDK
DK#
DK
tDKH
Command
NOP
NOP
NOP
tDKL
MRS
MRS
MR0
MR1
MRS
Valid
DM
Address
MR2
Valid
QK#
QK
QVLD1
DQ
RTT
T = 200μs (MIN)
10,000 CK cycles (MIN)
All voltage
supplies valid
and stable
Notes:
PDF: 09005aef85a88362
1.125Gb_rldram3.pdf – Rev. A 9/15 EN
tMRSC
DLL Reset &
ZQ Calibration
READ Training
register specs
apply
Indicates a break in
time scale
Normal
operation
Don’t Care
or Unknown
1. QVLD output drive status during power-up and initialization:
a. QVLD will remain at High-Z while RESET# is LOW.
b. After RESET# goes HIGH, QVLD will transition LOW after approximately 20ns.
c. QVLD will then continue to drive LOW with 40Ω or lower until MR0 is enabled. After MR0 has been enabled, the state of QVLD becomes unknown.
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1.125Gb: x18, x36 RLDRAM 3
WRITE Operation
d. QVLD will meet the output drive strength specifications when the ZQ calibration is
complete.
2. After MR2 has been issued, RTT is either High-Z or enabled to the ODT value selected in
MR1.
WRITE Operation
Figure 43: WRITE Burst
T0
T1
T2
T3
T4
T5
T5n
Command
WRITE
NOP
NOP
NOP
NOP
NOP
Address
Bank a,
Add n
T6
T6n
T7
CK#
CK
t CKDKnom
NOP
NOP
WL = 5
DK#
DK
DI
an
DQ
DM
t CKDKmin
WL - tCKDK
DK#
DK
DI
an
DQ
DM
t CKDKmax
WL + tCKDK
DK#
DK
DI
an
DQ
DM
Transitioning Data
Note:
PDF: 09005aef85a88362
1.125Gb_rldram3.pdf – Rev. A 9/15 EN
Don’t Care
1. DI an = data-in for bank a and address n.
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1.125Gb: x18, x36 RLDRAM 3
WRITE Operation
Figure 44: Consecutive WRITE Bursts
T0
T1
T2
T3
WRITE
NOP
WRITE
NOP
T4
T5
T5n
T6
T6n
T7
T7n
T8
T8n
T9
CK#
CK
Command
Address
Bank a,
Add n
Bank b,
Add n
WRITE
NOP
NOP
NOP
NOP
NOP
Bank a,
Add n
DK#
DK
tRC
WL
WL
DI
an
DQ
DI
bn
DI
an
DM
Transitioning Data
Indicates a break
in time scale
Note:
Don’t Care
1. DI an (or bn or cn) = data-in for bank a (or b or c) and address n.
Figure 45: WRITE-to-READ
T0
T1
T2
T3
T4
T5
Command
WRITE
NOP
READ
NOP
NOP
NOP
Address
Bank a,
Add n
T5n
T6
T6n
T7
CK#
CK
NOP
NOP
Bank b,
Add n
WL = 5
RL = 4
QK#
QK
DK#
DK
QVLD
DI
an
DQ
DO
bn
DM
Don’t Care
Notes:
PDF: 09005aef85a88362
1.125Gb_rldram3.pdf – Rev. A 9/15 EN
Transitioning Data
1. DI an = data-in for bank a and address n.
2. DO bn = data-out from bank b and address n.
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1.125Gb: x18, x36 RLDRAM 3
WRITE Operation
Figure 46: WRITE - DM Operation
T1
T0
T2
T3
T4
NOP
NOP
T5
T6
T6n
T7
T7n
T8
CK#
CK
tCK
Command
NOP
WRITE
tCH
tCL
NOP
NOP
NOP
NOP
NOP
Bank a,
Add n
Address
DK#
DK
tDKL
WL = 5
tDKH
DI
an
DQ
DM
tDS
tDH
Transitioning Data
Note:
Don’t Care
1. DI an = data-in for bank a and address n.
Figure 47: Consecutive Quad Bank WRITE Bursts
T0
T1
T2
Quad-Bank
WRITE
NOP
Quad-Bank
WRITE
T3
T4
T5
NOP
NOP
NOP
T5n
T6
T6n
T7
T7n
CK#
CK
Command
Address
Bank a,
Add n
NOP
NOP
Bank b,
Add n
tMMD = 2
WL = 5
DK#
DK
DI
an
DQ
DI
bn
DM
Transitioning Data
Notes:
PDF: 09005aef85a88362
1.125Gb_rldram3.pdf – Rev. A 9/15 EN
Don’t Care
1. DI an = data-in for bank a, a+4, a+8, and a+12 and address n.
2. DI bn = data-in for bank b, b+4, b+8, and b+12 and address n.
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1.125Gb: x18, x36 RLDRAM 3
WRITE Operation
Figure 48: Interleaved READ and Quad Bank WRITE Bursts
T0
T1
T2
READ
NOP
Quad-Bank
WRITE
T3
T4
T5
T5n
NOP
READ
NOP
T6
T6n
T7
T8
NOP
NOP
T8n
T9
T9n
CK#
CK
Command
Address
Bank a,
Add n
Bank b,
Add n
tMMD = 2
Bank c,
Add n
tMMD = 2
Quad-Bank
WRITE
NOP
Bank d,
Add n
tMMD = 2
RL = 5
WL = 6
QK#
QK
DK#
DK
QVLD
DO
an
DQ
DI
bn
DM
Transitioning Data
Notes:
PDF: 09005aef85a88362
1.125Gb_rldram3.pdf – Rev. A 9/15 EN
Don’t Care
1. DO an = data-out for bank a and address n.
2. DI bn = data-in for bank b, b+4, b+8, and b+12 and address n.
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1.125Gb: x18, x36 RLDRAM 3
READ Operation
READ Operation
Figure 49: Basic READ Burst
T1
T0
T2
T3
T4
T5
NOP
NOP
T5n
T6
T6n
T7
CK#
CK
tCK
Command
READ
NOP
Address
tCH
tCL
NOP
READ
Bank a
Add n
NOP
NOP
Bank a
Add n
RL = 4
tRC
=4
DM
tCKQKmin
tCKQKmin
QK#
QK
tQK
tQKH
tQKVLD
tQKL
tQKVLD
QVLD
DO
an
DQ
tCKQKmax
tCKQKmax
QK
QK#
tQK
tQKH
tQKL
QVLD
DO
an
DQ
Transitioning Data
Note:
PDF: 09005aef85a88362
1.125Gb_rldram3.pdf – Rev. A 9/15 EN
Don’t Care
1. DO an = data-out from bank a and address n.
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1.125Gb: x18, x36 RLDRAM 3
READ Operation
Figure 50: Consecutive READ Bursts (BL = 2)
T5n
T6n
T0
T1
T2
T3
T4
Command
READ
READ
READ
READ
READ
READ
READ
Address
Bank a
Add n
Bank b
Add n
Bank c
Add n
Bank d
Add n
Bank e
Add n
Bank f
Add n
Bank g
Add n
CK#
T4n
T5
T6
CK
RL = 4
QVLD
QK#
QK
DO
an
DQ
DO
bn
DO
cn
Transitioning Data
Note:
Don’t Care
1. DO an (or bn, cn) = data-out from bank a (or bank b, c) and address n.
Figure 51: Consecutive READ Bursts (BL = 4)
T0
T1
T2
T3
T4
Command
READ
NOP
READ
NOP
READ
Address
Bank a
Add n
CK#
T4n
T5
T5n
T6n
T6
CK
Bank b
Add n
NOP
Bank c
Add n
READ
Bank d
Add n
RL = 4
QVLD
QK#
QK
DO
an
DQ
Transitioning Data
Note:
PDF: 09005aef85a88362
1.125Gb_rldram3.pdf – Rev. A 9/15 EN
DO
bn
Don’t Care
1. DO an (or bn) = data-out from bank a (or bank b) and address n.
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1.125Gb: x18, x36 RLDRAM 3
READ Operation
Figure 52: READ-to-WRITE (BL = 2)
T0
T1
Command
READ
WRITE
Address
Bank a,
Add n
Bank b,
Add n
T2
T3
T4
T5
T6
T7
T8
NOP
NOP
NOP
NOP
NOP
NOP
NOP
CK#
CK
NOP
DM
QK#
QK
DK#
DK
RL = 4
WL = 5
QVLD
DO
an
DQ
DI
bn
Transitioning Data
Notes:
Don’t Care
1. DO an = data-out from bank a and address n.
2. DI bn = data-in for bank b and address n.
Figure 53: Read Data Valid Window
CK#
T0
T1
T2
READ
NOP
NOP
T3
T4
T5
T6
T7
T8
T9
T10
NOP
NOP
NOP
NOP
NOP
NOP
NOP
NOP
CK
Command
RL = 5
Address
Bank,
Addr n
QVLD
tQKQx,max
tQKQx,max
tHZmax
tLZmin
QKx, QKx#
tQH
DQ (last data valid)2
DO
n
DO
n
DQ (first data no longer valid)2
All DQ collectively2
tQH
DO
DO
DO
DO
DO
DO
DO
n+1
n+2
n+3
n+4
n+5
n+6
n+7
DO
DO
DO
DO
DO
DO
DO
n+3
n+1
n+2
n+4
n+5
n+6
n+7
DO
n
Data valid
DO
n+1
DO
n+2
DO
n+3
DO
n+4
DO
n+5
DO
n+6
DO
n+7
Data valid
Transitioning Data
Notes:
PDF: 09005aef85a88362
1.125Gb_rldram3.pdf – Rev. A 9/15 EN
Don’t Care
1.
2.
3.
4.
DO n = data-out from bank a and address n.
Represents DQs associated with a specific QK, QK# pair.
Output timings are referenced to VDDQ/2 and DLL on and locked.
tQKQx defines the skew between the QK0, QK0# pair to its respective DQs. tQKQx does
not define the skew between QK and CK.
5. Early data transitions may not always happen at the same DQ. Data transitions of a DQ
can vary (either early or late) within a burst.
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1.125Gb: x18, x36 RLDRAM 3
AUTO REFRESH Operation
AUTO REFRESH Operation
Figure 54: Bank Address-Controlled AUTO REFRESH Cycle
T0
CK#
CK
T1
tCK
AREFx
Command
AREFy
BAx
((
))
T3
tCH
tCL
ACx
ACy
((
))
((
))
Address
Bank
T2
((
))
BAy
((
))
((
))
DK, DK#
DQ
((
))
DM
tRC
Indicates a break
in time scale
Notes:
Don’t’ Care
1. AREFx (or AREFy)= AUTO REFRESH command to bank x (or bank y).
2. ACx = any command to bank x; ACy = any command to bank y.
3. BAx = bank address to bank x; BAy = bank address to bank y.
Figure 55: Multibank AUTO REFRESH Cycle
T0
T1
T2
T3
T4
T5
T6
T7
CK#
CK
Command
Address
AREF
AREF
AREF
AC
Bank
0,4,8,12
Bank
1,5,9,13
Bank
2, 3
Bank
0
tMMD
tMMD
Bank
DK, DK#
DQ
DM
tRC
Indicates a break
in time scale
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94
Don’t Care
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1.125Gb: x18, x36 RLDRAM 3
AUTO REFRESH Operation
Figure 56: READ Burst with ODT
CK#
T0
T1
T2
T3
T4
T4n
READ
NOP
NOP
NOP
NOP
T5
T5n
T6
T6n
T7
T7n
CK
Command
Address
NOP
NOP
NOP
NOP
Bank a,
Col n
RL = 4
QK#
BL = 2
QK
QVLD
DO
an
DQ
ODT
ODT on
ODT on
ODT off
QK#
BL = 4
QK
QVLD
DO
an
DQ
ODT
ODT on
ODT off
ODT on
QK#
BL = 8
QK
QVLD
DO
an
DQ
ODT off
ODT on
ODT
Transitioning Data
Note:
PDF: 09005aef85a88362
1.125Gb_rldram3.pdf – Rev. A 9/15 EN
on
Don’t Care
1. DO an = data out from bank a and address n.
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1.125Gb: x18, x36 RLDRAM 3
AUTO REFRESH Operation
Figure 57: READ-NOP-READ with ODT
CK#
T0
T1
T2
T3
T4
T4n
READ
NOP
READ
NOP
NOP
T5
T6
T6n
NOP
NOP
T7
CK
Command
Address
Bank a,
Col n
NOP
NOP
Bank b,
Col n
RL = 4
QK#
QK
QVLD
DO
an
DQ
ODT on
ODT
ODT off
DO
bn
ODT on
ODT off
Transitioning Data
Note:
PDF: 09005aef85a88362
1.125Gb_rldram3.pdf – Rev. A 9/15 EN
ODT on
Don’t Care
1. DO an (or bn) = data-out from bank a (or bank b) and address n.
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1.125Gb: x18, x36 RLDRAM 3
RESET Operation
RESET Operation
The RESET signal (RESET#) is an asynchronous signal that triggers any time it drops
LOW. There are no restrictions for when it can go LOW. After RESET# goes LOW, it must
remain LOW for 100ns. During this time, the outputs are disabled, ODT (RTT) turns off
(High-Z), and the DRAM resets itself. Prior to RESET# going HIGH, at least 100 stable CK
cycles with NOP commands must be given to the RLDRAM. After RESET# goes HIGH,
the DRAM must be reinitialized as though a normal power-up was executed. All refresh
counters on the DRAM are reset, and data stored in the DRAM is assumed unknown after RESET# has gone LOW.
Figure 58: RESET Sequence
System RESET
(warm boot)
Stable and
valid clock
tCK
CK#
CK
100 cycles
tIOZ
tCH
tCL
= 20ns
RESET#
tDK
DK#
DK
tDKH
Command
NOP
NOP
NOP
tDKL
MRS
MRS
MR0
MR1
MRS
Valid
DM
Address
MR2
Valid
QK#
QK
QVLD1
DQ
RTT
T = 200μs (MIN)
10,000 CK cycles (MIN)
tMRSC
DLL Reset &
ZQ Calibration
READ Training
register specs
apply
Indicates a break in
time scale
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97
Normal
operation
Don’t Care
or Unknown
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1.125Gb: x18, x36 RLDRAM 3
Clock Stop
Clock Stop
If the clock is stopped or suspended after normal operation has begun, the RESET# pin
must be asserted and the device reinitialized, before normal operation can continue.
Refer to the RESET and INITIALIZATION Operation sections for more detail. All refresh
counters on the DRAM are reset, and data stored in the DRAM is assumed unknown after RESET# has gone LOW.
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1.125Gb: x18, x36 RLDRAM 3
Mirror Function
Mirror Function
The mirror function ball (MF) is a DC input used to create mirrored ballouts for simple
dual-loaded clamshell mounting. If the MF ball is tied LOW, the address and command
balls are in their true layout. If the MF ball is tied HIGH, the address and command balls
are mirrored around the central y-axis (column 7). The following table shows the ball
assignments when the MF ball is tied HIGH for a x18 device. Compare that table to Table 1 (page 13) to see how the address and command balls are mirrored. The same balls
are mirrored on the x36 device.
Table 45: 64 Meg x 18 Ball Assignments with MF Ball Tied HIGH
1
A
2
3
4
5
6
7
8
9
10
11
12
13
VSS
VDD
NF
VDDQ
NF
VREF
DQ7
VDDQ
DQ8
VDD
VSS
RESET#
B
VEXT
VSS
NF
VSSQ
NF
VDDQ
DM0
VDDQ
DQ5
VSSQ
DQ6
VSS
VEXT
C
VDD
NF
VDDQ
NF
VSSQ
NF
DK0#
DQ2
VSSQ
DQ3
VDDQ
DQ4
VDD
D
A13
VSSQ
NF
VDDQ
NF
VSSQ
DK0
VSSQ
QK0
VDDQ
DQ0
VSSQ
A11
E
VSS
CS#
VSSQ
NF
VDDQ
NF
MF
QK0#
VDDQ
DQ1
VSSQ
A0
VSS
F
A9
A5
VDD
A4
A3
REF#
ZQ
WE#
A1
A2
VDD
A20
A7
G
VSS(CS1#)
A18
A8
VSS
BA0
VSS
CK#
VSS
BA1
VSS
A6
A15
VSS
H
A10
VDD
A12
A17
VDD
BA2
CK
BA3
VDD
A16
A14
VDD
A19
J
VDDQ
NF
VSSQ
NF
VDDQ
NF
VSS
QK1#
VDDQ
DQ9
VSSQ
QVLD
VDDQ
K
NF
VSSQ
NF
VDDQ
NF
VSSQ
DK1
VSSQ
QK1
VDDQ
DQ10
VSSQ
DQ11
L
VDD
NF
VDDQ
NF
VSSQ
NF
DK1#
DQ12
VSSQ
DQ13
VDDQ
DQ14
VDD
M
VEXT
VSS
NF
VSSQ
NF
VDDQ
DM1
VDDQ
DQ15
VSSQ
DQ16
VSS
VEXT
N
VSS
TCK
VDD
TDO
VDDQ
NF
VREF
DQ17
VDDQ
TDI
VDD
TMS
VSS
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1.125Gb: x18, x36 RLDRAM 3
Multiplexed Address Mode
Multiplexed Address Mode
Figure 59: Command Description in Multiplexed Address Mode
READ
WRITE
MRS
AREF
CK#
CK
CS#
WE#
REF#
Address
Ax
Bank
Address
BA
Ay
Ax
Ay
Ax
BA
BA
Ay
Ax1
Ay1
BA2
Don’t Care
Notes:
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1.125Gb_rldram3.pdf – Rev. A 9/15 EN
1. Addresses valid only during a multibank AUTO REFRESH command.
2. Bank addresses valid only during a bank address-controlled AUTO REFRESH command.
3. The minimum setup and hold times of the two address parts are defined as tIS and tIH.
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1.125Gb: x18, x36 RLDRAM 3
Multiplexed Address Mode
Figure 60: Power-Up/Initialization Sequence in Multiplexed Address Mode
T (MAX) = 200ms
VDD
VDDQ
VEXT
See power-up
conditions
in the
initialization
sequence text
VREF
t
RESET#
RESET# must be asserted low during power-up
Power-up
ramp
Stable and
valid clock
tCK
CK#
CK
tCL
tCH
100 cycles
tDK
DK#
DK
tDKH
Command
NOP
NOP
NOP
tDKL
MRS
MRS
NOP
MRS
NOP
MRS
MR01
MR02 (Ax)
MR0 (Ay)
MR1 (Ax)
MR1 (Ay)
MR2 (Ax)
NOP
Valid
DM
Address
MR2 (Ay)
Valid
QK#
QK
QVLD5
DQ
RTT High-Z
T = 200μs (MIN)
10,000 CK cycles (MIN)
tMRSC
All voltage
supplies valid
and stable
DLL Reset &
ZQ Calibration
Indicates a break
in time scale
Notes:
PDF: 09005aef85a88362
1.125Gb_rldram3.pdf – Rev. A 9/15 EN
tMRSC
Normal
READ Training operation
register specs
apply
Don’t Care
or Unknown
1. Set address bit MR0[9] HIGH. This enables the device to enter multiplexed address mode
when in non-multiplexed mode operation. Multiplexed address mode can also be entered at a later time by issuing an MRS command with MR0[9] HIGH. After address bit
MR0[9] is set HIGH, tMRSC must be satisfied before the two-cycle multiplexed mode MRS
command is issued.
2. Address MR0[9] must be set HIGH. This and the following step set the desired MR0 setting after the RLDRAM device is in multiplexed address mode.
3. MR1 (Ax), MR1 (Ay), MR2 (Ax), and MR2 (Ay) represent MR1 and MR2 settings in multiplexed address mode.
4. The above sequence must be followed in order to power up the RLDRAM device in the
multiplexed address mode.
5. See QVLD output drive strength status during power up and initialization in non-multiplexed initialization operation section.
6. After MR2 has been issued, RTT is either High-Z or enabled to the ODT value selected in
MR1.
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Multiplexed Address Mode
Figure 61: MR0 Definition for Multiplexed Address Mode
A5 A4 A3
Ax A20.......A10 A9 A8
A0
Ay A20.......A10
A9 A8
A4 A3
Address Bus
BA3 BA2 BA1 BA0
24 23 22 21
01 01 MRS
9 8 7 6 5 4
AM DLL Data Latency
20-10
Reserved
3
2
1
0
Mode Register (Mx)
tRC_MRS
M7 M6 M5 M4 Data Latency (RL & WL)
M22 M21
Mode Register Definition
0
0
Mode Register 0 (MR0)
0
1
Mode Register 1 (MR1)
1
0
Mode Register 2 (MR2)
1
1
Reserved
Notes:
PDF: 09005aef85a88362
1.125Gb_rldram3.pdf – Rev. A 9/15 EN
0
0
0
0
RL = 3 ; WL = 4
0
0
0
1
RL = 4 ; WL = 5
Enable
0
0
1
0
RL = 5 ; WL = 6
0
0
0
0
Disable
Reserved
0
0
1
1
RL = 6 ; WL = 7
0
0
0
1
0
1
0
0
RL = 7 ; WL = 8
0
0
1
0
32
42
0
1
0
1
RL = 8 ; WL = 9
0
0
1
1
5
0
1
1
0
RL = 9 ; WL = 10
0
1
0
0
6
0
1
1
0
1
0
1
0
RL = 10 ; WL = 11
RL = 11 ; WL = 12
0
1
0
1
7
0
1
1
0
8
1
0
0
1
RL = 12 ; WL = 13
1
0
1
0
RL = 13 ; WL = 14
0
1
1
0
1
0
1
0
1
0
1
1
RL = 14 ; WL = 15
1
0
0
1
9
Reserved
Reserved
1
1
0
0
RL = 15 ; WL = 16
1
0
1
0
Reserved
1
1
0
1
1
0
1
1
Reserved
1
1
1
0
RL = 16 ; WL = 17
RL = 17 ; WL = 18
1
1
0
0
Reserved
1
1
1
1
RL = 18 ; WL = 19
1
1
0
1
Reserved
1
1
1
0
Reserved
1
1
1
1
Reserved
M8
DLL Enable
0
1
M9
Address MUX
0
Non-multiplexed
1
Multiplexed
M3 M2 M1 M0
t RC_MRS
1. BA2, BA3, and all address balls corresponding to reserved bits must be held LOW during
the MRS command.
2. BL8 not allowed.
3. BL4 not allowed.
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Multiplexed Address Mode
Figure 62: MR1 Definition for Multiplexed Address Mode
Ax A20.......A13
Ay A20.......A13
A10 A9 A8
A5 A4 A3
A0
A4 A3
A9 A8
Address Bus
BA3 BA2 BA1 BA0
24 23 22 21 20-11
MRS Reserved
01 01
M22 M21
Mode Register Definition
Off
0
0
RZQ/6 (40
0
0
1
RZQ/6 (40
0
1
RZQ/4 (60
0
1
0
RZQ/4 (60
1
0
Reserved
M6 ZQ Calibration Selection
0
1
1
RZQ/2 (120
1
1
Reserved
0
Short ZQ Calibration
1
0
0
Reserved
1
Long ZQ Calibration
1
0
1
Reserved
1
1
0
Reserved
1
1
1
Reserved
Yes
0
1
1
0
Mode Register 2 (MR2)
1
0

1
1
Reserved
1
1
Reserved
PDF: 09005aef85a88362
1.125Gb_rldram3.pdf – Rev. A 9/15 EN
ODT
1
Mode Register 1 (MR1)
Mode Register (Mx)
0

0
1
0
0
2
0
0
1
Drive
0
No
Mode Register 0 (MR0)
2
M4 M3 M2
0
0
4 3
ODT
M5 DLL Reset
M10 M9 Burst Length
0
Notes:
10 9 8 7 6 5
BL2 Ref ZQe ZQ DLL
M8
AREF Protocol
M7
0
Bank Address Control
0
Disabled - Default
1
Multibank
1
Enable
ZQ Calibration Enable
M1 M0 Output Drive
1. BA2, BA3, and all address balls corresponding to reserved bits must be held LOW during
the MRS command.
2. BL8 not available in x36.
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Multiplexed Address Mode
Figure 63: MR2 Definition for Multiplexed Address Mode
A0
A5 A4 A3
Ax A20...A10 A9 A8
Ay A20...A10
A9
A8
A4 A3
Address Bus
BA3 BA2 BA1 BA0
24 23 22 21
20-10
9-8
01 01 MRS Reserved Reserved
M22 M21
7
6
PPR Res.
5 4 3 2
WRITE
En
1 0
RTR
Mode Register (Mx)
Mode Register Definition
0
0
Mode Register 0 (MR0)
M7
PPR
0
1
Mode Register 1 (MR1)
0
Disabled
0
0
0-1-0-1 on all DQs
1
0
Mode Register 2 (MR2)
1
Enabled
0
1
Even DQs: 0-1-0-1 ; Odd DQs: 1-0-1-0
1
1
Reserved
1
0
Reserved
1
1
Reserved
M1 M0
READ Training Register
M2 READ Training Register Enable
M5 M4 M3
Note:
0
Normal RLDRAM Operation
1
READ Training Enabled
WRITE Protocol
0
0
0
0
0
1
Single Bank
Dual Bank (8 bank offset [same as F67R])
0
0
1
1
1
1
0
0
0
1
0
1
Quad Bank (4 bank offset [same as F67R])
Dual Bank (sequential - i.e. 0-1, 1-2, 2-3, etc.)
1
1
1
1
0
1
Quad Bank (sequential - i.e. 0-1-2-3, 1-2-3-4, etc.)
Reserved
Reserved
Reserved
1. BA2, BA3, and all address balls corresponding to reserved bits must be held LOW during
the MRS command.
Table 46: Address Mapping in Multiplexed Address Mode
Address
Data
Width
Burst
Length
Ball
A0
A3
A4
A5
A8
A9
A10
A13
A14
A17
A18
x36
2
Ax
A0
A3
A4
A5
A8
A9
A10
A13
A14
A17
A18
Ay
X
A1
A2
X
A6
A7
A19
A11
A12
A16
A15
Ax
A0
A3
A4
A5
A8
A9
A10
A13
A14
A17
A18
Ay
X
A1
A2
X
A6
A7
X
A11
A12
A16
A15
4
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1.125Gb: x18, x36 RLDRAM 3
Multiplexed Address Mode
Table 46: Address Mapping in Multiplexed Address Mode (Continued)
Address
Data
Width
Burst
Length
Ball
A0
A3
A4
A5
A8
A9
A10
A13
A14
A17
A18
x18
2
Ax
A0
A3
A4
A5
A8
A9
A10
A13
A14
A17
A18
Ay
X
A1
A2
A20
A6
A7
A19
A11
A12
A16
A15
Ax
A0
A3
A4
A5
A8
A9
A10
A13
A14
A17
A18
Ay
X
A1
A2
X
A6
A7
A19
A11
A12
A16
A15
Ax
A0
A3
A4
A5
A8
A9
A10
A13
A14
A17
A18
Ay
X
A1
A2
X
A6
A7
X
A11
A12
A16
A15
4
8
Note:
1. X = “Don’t Care”
Data Latency in Multiplexed Address Mode
When in multiplexed address mode, data latency (READ and WRITE) begins when the
Ay part of the address is issued with any READ or WRITE command. tRC is measured
from the clock edge in which the command and Ax part of the address is issued in both
multiplexed and non-multiplexed address mode.
REFRESH Command in Multiplexed Address Mode
Similar to other commands when in multiplexed address mode, both modes of AREF
(single and multibank) are executed on the rising clock edge, following the one on
which the command is issued. However, when in bank address-controlled AREF, because only the bank address is required, the next command can be applied on the following clock. When using multibank AREF, the bank addresses are mapped across Ax
and Ay so a subsequent command cannot be issued until two clock cycles later.
Figure 64: Bank Address-Controlled AUTO REFRESH Operation with Multiplexed Addressing
T0
T1
T2
T3
T4
T5
T6
T7
T8
T9
Command
AC1
NOP
AREF
AREF
AREF
AREF
AREF
AREF
AREF
AREF
Address
Ax
Ay
T10
T11
CK#
CK
Bank
AC1
Ax
Bank n
Bank 0
Bank 1
Bank 2
Bank 3
Bank 4
Bank 5
Bank 6
Bank 7
Ay
Bank n
Don’t Care
Note:
PDF: 09005aef85a88362
1.125Gb_rldram3.pdf – Rev. A 9/15 EN
1. Any command subject to tRC specification.
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Multiplexed Address Mode
Figure 65: Multibank AUTO REFRESH Operation with Multiplexed Addressing
T0
T1
T2
T3
T4
T5
T6
T7
AREF1
NOP
AREF1
NOP
AREF1
NOP
AC2
NOP
Ax
Ay
Ax
Ay
Ax
Ay
Ax
Ay
CK#
CK
Command
Address
Bank
Bank n
Don’t Care
Notes:
1. Usage of multibank AREF subject to tSAW and tMMD specifications.
2. Any command subject to tRC specification.
Figure 66: Consecutive WRITE Bursts with Multiplexed Addressing
T0
T1
T2
T3
T4
WRITE
NOP
WRITE
NOP
Ax
Ay
Ax
Ay
T5
T6
WRITE
NOP
NOP
Ax
Ay
T6n
T7
T7n
T8
T8n
T9
CK#
CK
Command
Address
Bank
Bank a
Bank b
NOP
NOP
NOP
Bank a
DK#
DK
tRC
WL
DI
a
DQ
DI
b
DM
Indicates a break
in time scale
Note:
PDF: 09005aef85a88362
1.125Gb_rldram3.pdf – Rev. A 9/15 EN
Transitioning Data
Don’t Care
1. DI a = data-in for bank a; DI b = data-in for bank b.
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Multiplexed Address Mode
Figure 67: WRITE-to-READ with Multiplexed Addressing
T0
T1
T2
T3
T4
T5
T6
WRITE
NOP
READ
NOP
NOP
NOP
NOP
Ax
Ay
Ax
Ay
T6n
T7
T7n
T8
T8n
CK#
CK
Command
Address
NOP
NOP
WL
Bank
Bank a
Bank b
RL
QK#
QK
DK#
DK
QVLD
DI
a
DQ
DO
b
DM
Indicates a break
in time scale
Note:
Transitioning Data
Don’t Care
1. DI a = data-in for bank a; DO b = data-out for bank b.
Figure 68: Consecutive READ Bursts with Multiplexed Addressing
T0
T1
T2
T3
T4
T5
T5n
T6
T6n
READ
NOP
READ
NOP
READ
NOP
READ
Ax
Ay
Ax
Ay
Ax
Ay
Ax
CK#
CK
Command
Address
Bank
Bank a
Bank b
Bank c
Bank d
RL
QVLD
QK#
QK
DO
a
DQ
Indicates a break
in time scale
Note:
PDF: 09005aef85a88362
1.125Gb_rldram3.pdf – Rev. A 9/15 EN
Transitioning Data
Don’t Care
1. DO a = data-out for bank a.
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Multiplexed Address Mode
Figure 69: READ-to-WRITE with Multiplexed Addressing
CK#
T0
T1
T2
T3
T4
T5
T6
READ
NOP
WRITE
NOP
NOP
NOP
NOP
Ax
Ay
Ax
Ay
T6n
T7
T7n
T8
T9
NOP
NOP
NOP
T9n
CK
Command
Address
Bank
NOP
Bank b
Bank a
DM
QK#
QK
DK#
DK
RL
WL
QVLD
DO
a
DQ
Indicates a break
in time scale
Note:
PDF: 09005aef85a88362
1.125Gb_rldram3.pdf – Rev. A 9/15 EN
DI
b
Transitioning Data
Don’t Care
1. DO a = data-out for bank a; DI b = data-in for bank b.
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1.125Gb: x18, x36 RLDRAM 3
IEEE 1149.1 Serial Boundary Scan (JTAG)
IEEE 1149.1 Serial Boundary Scan (JTAG)
The RLDRAM 3 device incorporates a serial boundary-scan test access port (TAP) for
the purpose of testing the connectivity of the device after it has been mounted on a
printed circuit board (PCB). As the complexity of PCB high-density surface mounting
techniques increases, the boundary-scan architecture is a valuable resource for interconnectivity debug. This port operates in accordance with IEEE Standard 1149.1-2001
(JTAG) with the exception of the ZQ pin. To ensure proper boundary-scan testing of the
ZQ pin, MR1[7] needs to be set to 0 until the JTAG testing of the pin is complete. Note
that upon power-up, the default state of the MRS bit M1[7] is LOW.
The JTAG test access port utilizes the TAP controller on the device, from which the instruction register, boundary-scan register, bypass register, and ID register can be selected. Each of these functions of the TAP controller is described in detail below.
Disabling the JTAG Feature
It is possible to operate an RLDRAM 3 device without using the JTAG feature. To disable
the TAP controller, TCK must be tied LOW (V SS) to prevent clocking of the device. TDI
and TMS are internally pulled up and may be unconnected. They may alternately be
connected to V DDQ through a pull-up resistor. TDO should be left unconnected. Upon
power-up, the device will come up in a reset state, which will not interfere with the operation of the device.
Test Access Port (TAP)
Test Clock (TCK)
The test clock is used only with the TAP controller. All inputs are captured on the rising
edge of TCK. All outputs are driven from the falling edge of TCK.
Test Mode Select (TMS)
The TMS input is used to give commands to the TAP controller and is sampled on the
rising edge of TCK.
All the states in Figure 70 (page 111) are entered through the serial input of the TMS
ball. A 0 in the diagram represents a LOW on the TMS ball during the rising edge of TCK,
while a 1 represents a HIGH on TMS.
Test Data-In (TDI)
The TDI ball is used to serially input test instructions and data into the registers and can
be connected to the input of any of the registers. The register between TDI and TDO is
chosen by the instruction that is loaded into the TAP instruction register. For information on loading the instruction register, see Figure 70 (page 111). TDI is connected to
the most significant bit (MSB) of any register (see Figure 71 (page 111)).
Test Data-Out (TDO)
The TDO output ball is used to serially clock test instructions and data out from the registers. The TDO output driver is only active during the Shift-IR and Shift-DR TAP controller states. In all other states, the TDO ball is in a High-Z state. The output changes on
the falling edge of TCK. TDO is connected to the least significant bit (LSB) of any register (see Figure 71 (page 111)).
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IEEE 1149.1 Serial Boundary Scan (JTAG)
TAP Controller
The TAP controller is a finite state machine that uses the state of the TMS ball at the
rising edge of TCK to navigate through its various modes of operation (see Figure 70
(page 111)). Each state is described in detail below.
Test-Logic-Reset
The test-logic-reset controller state is entered when TMS is held HIGH for at least five
consecutive rising edges of TCK. As long as TMS remains HIGH, the TAP controller will
remain in the test-logic-reset state. The test logic is inactive during this state.
Run-Test/Idle
The run-test/idle is a controller state in between scan operations. This state can be
maintained by holding TMS LOW. From there, either the data register scan, or subsequently, the instruction register scan, can be selected.
Select-DR-Scan
Select-DR-scan is a temporary controller state. All test data registers retain their previous state while here.
Capture-DR
The capture-DR state is where the data is parallel-loaded into the test data registers. If
the boundary-scan register is the currently selected register, then the data currently on
the balls is latched into the test data registers.
Shift-DR
Data is shifted serially through the data register while in this state. As new data is input
through the TDI ball, data is shifted out of the TDO ball.
Exit1-DR, Pause-DR, and Exit2-DR
The purpose of exit1-DR is used to provide a path to return back to the run-test/idle
state (through the update-DR state). The pause-DR state is entered when the shifting of
data through the test registers needs to be suspended. When shifting is to reconvene,
the controller enters the exit2-DR state and then can re-enter the shift-DR state.
Update-DR
When the EXTEST instruction is selected, there are latched parallel outputs of the boundary-scan shift register that only change state during the update-DR controller state.
Instruction Register States
The instruction register states of the TAP controller are similar to the data register
states. The desired instruction is serially shifted into the instruction register during the
shift-IR state and is loaded during the update-IR state.
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IEEE 1149.1 Serial Boundary Scan (JTAG)
Figure 70: TAP Controller State Diagram
1
Test-logic
reset
0
Run-test/
Idle
0
1
1
Select
DR-scan
Select
IR-scan
0
1
0
1
Capture-DR
Capture-IR
0
0
Shift-DR
Shift-IR
0
1
1
Exit1-IR
0
1
0
Pause-DR
Pause-IR
0
1
0
1
0
Exit2-DR
Exit2-IR
1
1
Update-DR
1
0
1
Exit1-DR
0
1
Update-IR
1
0
0
Figure 71: TAP Controller Functional Block Diagram
0
Bypass register
7 6 5 4 3 2 1 0
TDI
Selection
circuitry
Instruction register
31 30 29 .
.
Selection
circuitry
. 2 1 0
TDO
Identification register
x1 . . . . . 2 1 0
Boundry scan register
TCK
TMS
Note:
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TAP controller
1. x = 135 for all configurations.
111
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IEEE 1149.1 Serial Boundary Scan (JTAG)
Performing a TAP RESET
A reset is performed by forcing TMS HIGH (V DDQ) for five rising edges of tCK. This RESET does not affect the operation of the device and may be performed while the device
is operating.
At power-up, the TAP is reset internally to ensure that TDO comes up in a High-Z state.
If JTAG inputs cannot be guaranteed to be stable during power-up it is recommended
that TMS be held HIGH for at least 5 consecutive TCK cycles prior to boundary scan
testing.
TAP Registers
Registers are connected between the TDI and TDO balls and allow data to be scanned
into and out of the RLDRAM 3 device test circuitry. Only one register can be selected at
a time through the instruction register. Data is serially loaded into the TDI ball on the
rising edge of TCK. Data is output on the TDO ball on the falling edge of TCK.
Instruction Register
Eight-bit instructions can be serially loaded into the instruction register. This register is
loaded during the update-IR state of the TAP controller. Upon power-up, the instruction
register is loaded with the IDCODE instruction. It is also loaded with the IDCODE instruction if the controller is placed in a reset state as described in the previous section.
When the TAP controller is in the capture-IR state, the two LSBs are loaded with a binary 01 pattern to allow for fault isolation of the board-level serial test data path.
Bypass Register
To save time when serially shifting data through registers, it is sometimes advantageous
to skip certain chips. The bypass register is a single-bit register that can be placed between the TDI and TDO balls. This enables data to be shifted through the device with
minimal delay. The bypass register is set LOW (V SS) when the BYPASS instruction is executed.
Boundary-Scan Register
The boundary-scan register is connected to all the input and bidirectional balls on the
device. Several balls are also included in the scan register to reserved balls. The device
has a 135-bit register.
The boundary-scan register is loaded with the contents of the RAM I/O ring when the
TAP controller is in the capture-DR state and is then placed between the TDI and TDO
balls when the controller is moved to the shift-DR state.
The order in which the bits are connected is shown in Table 55 (page 120). Each bit corresponds to one of the balls on the RLDRAM package. The MSB of the register is connected to TDI, and the LSB is connected to TDO.
Identification (ID) Register
The ID register is a 32-bit register that can be loaded with a vendor-specific identification code, MR0 and MR1 or MR2 register settings during the capture-DR state depending upon which command is loaded in the instruction register. The information loaded
into this register can be shifted out when the TAP controller is in the shift-DR state. The
Identification code definition is described in Table 52 (page 118). The MR0_MR1 defini-
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IEEE 1149.1 Serial Boundary Scan (JTAG)
tion is described in Table 53 (page 118). The MR2 definition is described in Table 54
(page 119).
TAP Instruction Set
Overview
There are 28 different instructions possible with the 8-bit instruction register. All combinations used are listed in Table 51 (page 118). These six instructions are described in
detail below. The remaining instructions are reserved and should not be used.
The TAP controller used in this RLDRAM 3 device is fully compliant to the IEEE 1149.1
convention.
Instructions are loaded into the TAP controller during the shift-IR state when the instruction register is placed between TDI and TDO. During this state, instructions are
shifted through the instruction register through the TDI and TDO balls. To execute the
instruction after it is shifted in, the TAP controller needs to be moved into the update-IR
state.
EXTEST
The EXTEST instruction enables circuitry external to the component package to be tested. Boundary-scan register cells at output balls are used to apply a test vector, while
those at input balls capture test results. Typically, the first test vector to be applied using
the EXTEST instruction will be shifted into the boundary-scan register using the PRELOAD instruction. Thus, during the update-IR state of EXTEST, the output driver is
turned on, and the PRELOAD data is driven onto the output balls.
IDCODE
The IDCODE instruction causes a vendor-specific, 32-bit code to be loaded into the ID
register. It also places the ID register between the TDI and TDO balls and enables the
IDCODE to be shifted out of the device when the TAP controller enters the shift-DR
state. The IDCODE instruction is loaded into the instruction register upon power-up or
whenever the TAP controller is given a test logic reset state.
MR0_MR1
The MR0_MR1 instruction causes the values in the MR0 and MR1 Mode Registers to be
loaded into the ID register. It also places the ID register between the TDI and TDO balls
and enables the MR0 and MR1 codes to be shifted out of the device when the TAP controller enters the shift-DR state.
MR2
The MR2 instruction causes the values in the MR2 Mode Register to be loaded into the
ID register. It also places the ID register between the TDI and TDO balls and enables the
MR2 codes to be shifted out of the device when the TAP controller enters the shift-DR
state.
High-Z
The High-Z instruction causes the bypass register to be connected between the TDI and
TDO. This places all RLDRAM outputs into a High-Z state.
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IEEE 1149.1 Serial Boundary Scan (JTAG)
CLAMP
When the CLAMP instruction is loaded into the instruction register, the data driven by
the output balls are determined from the values held in the boundary-scan register.
SAMPLE/PRELOAD
When the SAMPLE/PRELOAD instruction is loaded into the instruction register and the
TAP controller is in the capture-DR state, a snapshot can be taken of the states of the
component's input and output signals without interfering with the normal operation of
the assembled board. The snapshot is taken on the rising edge of TCK and is captured in
the boundry-scan register. The data can then be viewed by shifting through the component's TDO output.
The user must be aware that the TAP controller clock can only operate at a frequency up
to 50 MHz, while the RLDRAM 3 clock operates significantly faster. Because there is a
large difference between the clock frequencies, it is possible that during the capture-DR
state, an input or output will undergo a transition. The TAP may then try to capture a
signal while in transition (metastable state). This will not harm the device, but there is
no guarantee as to the value that will be captured. Repeatable results may not be possible.
To ensure that the boundary-scan register will capture the correct value of a signal, the
RLDRAM signal must be stabilized long enough to meet the TAP controller’s capture
setup plus hold time (tCS plus tCH). The RLDRAM clock input might not be captured
correctly if there is no way in a design to stop (or slow) the clock during a SAMPLE/
PRELOAD instruction. If this is an issue, it is still possible to capture all other signals
and simply ignore the value of the CK and CK# captured in the boundary-scan register.
After the data is captured, it is possible to shift out the data by putting the TAP into the
shift-DR state. This places the boundary-scan register between the TDI and TDO balls.
BYPASS
When the BYPASS instruction is loaded in the instruction register and the TAP is placed
in a shift-DR state, the bypass register is placed between TDI and TDO. The advantage
of the BYPASS instruction is that it shortens the boundary-scan path when multiple devices are connected together on a board.
Reserved for Future Use
The remaining instructions are not implemented but are reserved for future use. Do not
use these instructions.
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IEEE 1149.1 Serial Boundary Scan (JTAG)
Figure 72: JTAG Operation – Loading Instruction Code and Shifting Out Data
T0
T1
T2
T3
T4
T5
T6
T7
T8
T9
TCK
TMS
TDI
TAP
Controller
State
Test-LogicReset
Run-Test
Idle
Select-DRSCAN
Select-IRSCAN
Capture-IR
Shift-IR
Shift
IR
Exit 1-IR
Pause-IR
Pause-IR
TDO
8-bit instruction
code
T10
T11
T12
T13
T14
T15
T16
T17
T18
T19
TCK
TMS
TDI
TAP
Controller
State
Exit 2-IR
Update-IR
Select-DRScan
Capture-DR
Shift-DR
Shift
DR
Exit1-DR
Update-DR
Run-Test
Idle
Run-Test
Idle
TDO
n-bit register
between
TDI and TDO
Transitioning Data
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Don’t Care
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1.125Gb: x18, x36 RLDRAM 3
IEEE 1149.1 Serial Boundary Scan (JTAG)
Figure 73: TAP Timing
T1
T2
T3
T4
T5
T6
Test clock
(TCK)
tTHTL
tTLTH
tTHTH
tMVTH tTHMX
Test mode select
(TMS)
tDVTH tTHDX
Test data-in
(TDI)
tTLOV
tTLOX
Test data-out
(TDO)
Undefined
Don’t Care
Table 47: TAP Input AC Logic Levels
0°C ≤ TC ≤ +95°C; +1.28V ≤ VDD ≤ +1.42V, unless otherwise noted
Description
Symbol
Min
Max
Units
Input HIGH (logic 1) voltage
VIH
VREF + 0.225
-
V
Input LOW (logic 0) voltage
VIL
-
VREF - 0.225
V
Note:
1. All voltages referenced to VSS (GND).
Table 48: TAP AC Electrical Characteristics
0°C ≤ TC ≤ +95°C; +1.28V ≤ VDD ≤ +1.42V
Description
Symbol
Min
Max
Units
Clock cycle time
tTHTH
20
Clock frequency
fTF
50
MHz
Clock HIGH time
tTHTL
10
ns
Clock LOW time
tTLTH
10
ns
TCK LOW to TDO unknown
tTLOX
0
ns
TCK LOW to TDO valid
tTLOV
TDI valid to TCK HIGH
tDVTH
5
ns
TCK HIGH to TDI invalid
tTHDX
5
ns
tMVTH
5
ns
Clock
ns
TDI/TDO times
10
ns
Setup times
TMS setup
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IEEE 1149.1 Serial Boundary Scan (JTAG)
Table 48: TAP AC Electrical Characteristics (Continued)
0°C ≤ TC ≤ +95°C; +1.28V ≤ VDD ≤ +1.42V
Description
Symbol
Min
tCS
5
ns
tTHMX
5
ns
tCH
5
ns
Capture setup
Max
Units
Hold times
TMS hold
Capture hold
Note:
1. tCS and tCH refer to the setup and hold time requirements of latching data from the
boundary-scan register.
Table 49: TAP DC Electrical Characteristics and Operating Conditions
0°C ≤ TC ≤ +95°C; +1.28V ≤ VDD ≤ +1.42V, unless otherwise noted
Description
Condition
Symbol
Min
Max
Units
Notes
Input HIGH (logic 1) voltage
VIH
VREF + 0.15
VDDQ
V
1, 2
Input LOW (logic 0) voltage
VIL
VSSQ
VREF - 0.15
V
1, 2
0V ≤ VIN ≤ VDD
ILI
-5.0
5.0
μA
Output disabled, 0V ≤
VIN ≤ VDDQ
ILO
-5.0
5.0
μA
Input leakage current
Output leakage current
Output low voltage
IOLC = 100μA
VOL1
0.2
V
1
Output low voltage
IOLT = 2mA
VOL2
0.4
V
1
Output high voltage
|IOHC| = 100μA
VOH1
VDDQ - 0.2
V
1
|IOHT| = 2mA
VOH2
VDDQ - 0.4
V
1
OUTPUT HIGH VOLTAGE
Notes:
1. All voltages referenced to VSS (GND).
2. See AC Overshoot/Undershoot Specifications section for overshoot and undershoot limits.
Table 50: Scan Register Sizes
Register Name
Bit Size
Instruction
8
Bypass
1
ID
32
Boundary scan
135
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IEEE 1149.1 Serial Boundary Scan (JTAG)
Table 51: Instruction Codes
Instruction
Code [7:0]
Description
Extest
0000 0000
Captures I/O ring contents; Places the boundary-scan register between TDI and TDO;
This operation does not affect RLDRAM 3 operations.
ID code
0010 0001
Loads the ID register with the vendor ID code and places the register between TDI
and TDO; This operation does not affect RLDRAM 3 operations.
Sample/preload
0000 0101
Captures I/O ring contents; Places the boundary-scan register between TDI and TDO.
Clamp
0000 0111
Selects the bypass register to be connected between TDI and TDO; Data driven by
output balls are determined from values held in the boundary-scan register.
High-Z
0000 0011
Selects the bypass register to be connected between TDI and TDO; All outputs are
forced into High-Z.
MR0_MR1
0010 0101
Loads the ID register with the MR0 and MR1 Mode Register settings and places the
register between TDI and TDO; This operation does not affect RLDRAM 3 operations.
MR2
0010 1001
Loads the ID register with the MR2 Mode Register settings and places the register between TDI and TDO; This operation does not affect RLDRAM 3 operations.
Bypass
1111 1111
Places the bypass register between TDI and TDO; This operation does not affect
RLDRAM operations.
Table 52: Identification (ID) Code Definition
Instruction Field
Revision number (31:28)
All Devices
abcd
Description
ab = 00 for Die Revision A
cd = 00 for x18, 01 for x36
Device ID (27:12)
00jkidef10100111 def = 000 for 576Mb, 001 for 1Gb Double Die Package, 010 for
1Gb Monolithic
i = 0 for common I/O, 1 for seperate I/O
jk = 10 for RLDRAM 3
Micron JEDEC ID code (11:1)
ID register presence indicator (0)
00000101100
1
Enables unique identification of RLDRAM vendor
Indicates the presence of an ID register
Table 53: MR0_MR1 Mode Register Settings Definition
Instruction Field
Not Defined (31:29)
MR1 (28:17)
Not Defined (16:13)
MR0 (12:1)
MR0_MR1 register indicator (0)
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All Devices
xxx
MR1[11:0]
xxx
MR0[11:0]
1
Description
Not defined and will be 0
MR1 spec sheet latched bits
Not defined and will be 0
MR0 spec sheet latched bits
Indicates the presence of the MR0_MR1 register
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IEEE 1149.1 Serial Boundary Scan (JTAG)
Table 54: MR2 Mode Register Settings Definition
Instruction Field
Not Defined (31:11)
MR2 (10:1)
MR2 register indicator (0)
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All Devices
Description
xxx
Not defined
MR2[9:0]
1
MR2 spec sheet latched bits;
Indicates the presence of the MR2 register
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IEEE 1149.1 Serial Boundary Scan (JTAG)
Table 55: Boundary Scan (Exit)
Bit#
Ball
Bit#
Ball
Bit#
Ball
1
N8
46
D9
91
N6
2
N8
47
L7
92
M3
3
M11
48
K7
93
M3
4
M11
49
H1
94
M5
5
M9
50
H3
95
M5
6
M9
51
H4
96
L2
7
L12
52
G2
97
L2
8
L12
53
G3
98
L4
9
L10
54
F1
99
L4
10
L10
55
H6
100
L6
11
L8
56
G5
101
L6
12
L8
57
G4
102
K1
13
K13
58
G1
103
K1
14
K13
59
F6
104
K3
15
K11
60
E2
105
K3
16
K11
61
F5
106
J4
17
J10
62
F4
107
J4
18
J10
63
F2
108
J6
19
J8
64
D1
109
J6
20
J8
65
F7
110
K5
21
K9
66
D7
111
K5
22
K9
67
C7
112
J2
23
J12
68
A13
113
J2
24
J12
69
B7
114
A4
25
A10
70
E7
115
A4
26
A10
71
D13
116
A6
27
A8
72
F12
117
A6
28
A8
73
F10
118
B3
29
B11
74
F9
119
B3
30
B11
75
E12
120
B5
31
B9
76
G13
121
B5
32
B9
77
G10
122
C2
33
C12
78
F8
123
C2
34
C12
79
G7
124
C4
35
C10
80
H7
125
C4
36
C10
81
G9
126
C6
37
C8
82
H8
127
C6
38
C8
83
F13
128
E4
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IEEE 1149.1 Serial Boundary Scan (JTAG)
Table 55: Boundary Scan (Exit) (Continued)
Bit#
Ball
Bit#
Ball
Bit#
Ball
39
E10
84
G11
129
E4
40
E10
85
G12
130
D3
41
D11
86
H10
131
D3
42
D11
87
H11
132
E6
43
E8
88
H13
133
E6
44
E8
89
M7
134
D5
45
D9
90
N6
135
D5
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www.micron.com/products/support Sales inquiries: 800-932-4992
Micron and the Micron logo are trademarks of Micron Technology, Inc.
All other trademarks are the property of their respective owners.
This data sheet contains minimum and maximum limits specified over the power supply and temperature range set forth herein.
Although considered final, these specifications are subject to change, as further product development and data characterization sometimes occur.
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