MOTOROLA MCM69R738AZP7R 4m late write 2.5 v i/o Datasheet

MOTOROLA
Order this document
by MCM69R738A/D
SEMICONDUCTOR TECHNICAL DATA
Advance Information
4M Late Write 2.5 V I/O
MCM69R738A
MCM69R820A
The MCM69R738A/820A is a 4 megabit synchronous late write fast static RAM
designed to provide high performance in secondary cache and ATM switch,
Telecom, and other high speed memory applications. The MCM69R820A
organized as 256K words by 18 bits, and the MCM69R738A organized as 128K
words by 36 bits wide are fabricated in Motorola’s high performance silicon gate
BiCMOS technology.
The differential CK clock inputs control the timing of read/write operations of
the RAM. At the rising edge of the CK clock all addresses, write enables, and
synchronous selects are registered. An internal buffer and special logic enable
the memory to accept write data on the rising edge of the CK clock a cycle after
address and control signals. Read data is driven on the rising edge of the CK
clock also.
The RAM uses 2.5 V inputs and outputs.
The synchronous write and byte enables allow writing to individual bytes or the
entire word.
ZP PACKAGE
PBGA
CASE 999–01
•
•
•
•
•
•
•
•
•
Byte Write Control
Single 3.3 V +10%, – 5% Operation
2.5 V I/O (VDDQ)
Register to Register Synchronous Operation
Asynchronous Output Enable
Boundary Scan (JTAG) IEEE 1149.1 Compatible
Differential Clock Inputs
Optional x 18 or x 36 organization
MCM69R738A/820A–5 = 5 ns
MCM69R738A/820A–6 = 6 ns
MCM69R738A/820A–7 = 7 ns
MCM69R738A/820A–8 = 8 ns
• Sleep Mode Operation (ZZ Pin)
• 119 Bump, 50 mil (1.27 mm) Pitch, 14 mm x 22 mm Plastic Ball Grid Array
(PBGA) Package
This document contains information on a new product. Specifications and information herein are subject to change without notice.
REV 1
8/13/97
 Motorola, Inc. 1997
MOTOROLA
FAST SRAM
MCM69R738A•MCM69R820A
1
FUNCTIONAL BLOCK DIAGRAM
ADDRESS
REGISTERS
SA
DATA IN
REGISTER
MEMORY
ARRAY
DQ
DATA OUT
REGISTER
SW
SW
REGISTERS
SBx
CONTROL
LOGIC
CK
G
SS
REGISTERS
SS
PIN ASSIGNMENTS
TOP VIEW
MCM69R738A
A
B
C
D
MCM69R820A
1
2
3
4
5
6
7
VDDQ
SA
SA
NC
SA
SA
VDDQ
NC
NC
DQc
NC
SA
DQc
SA
SA
VSS
NC
VDD
NC
SA
SA
VSS
NC
SA
DQb
NC
NC
DQb
E
DQc
VDDQ DQc
VSS
VSS
SS
G
VSS
VSS
DQb
K
DQb VDDQ
DQc
DQc
DQc
VDDQ VDD
DQd
DQd
SBc
VSS
NC
VSS
NC
NC
VDD
CK
SBb
VSS
NC
VSS
DQb
DQb
DQb
VDD VDDQ
DQa
DQa
DQd
DQd
T
U
4
5
6
7
VDDQ
SA
SA
NC
SA
SA
VDDQ
NC
NC
SA
NC
SA
NC
NC
NC
SA
SA
VDD
SA
SA
NC
DQb
NC
VSS
NC
VSS
DQa
NC
NC
DQb
VSS
SS
VSS
NC
DQa
VDDQ
NC
VSS
G
VSS
DQa VDDQ
NC
DQb
SBb
NC
VSS
NC
DQa
J
DQb
NC
VSS
NC
VSS
DQa
NC
K
VDDQ VDD
NC
VDD
NC
SBd
CK
SBa
DQa
DQa
VDD VDDQ
NC
DQb
VSS
CK
VSS
NC
DQa
DQb
NC
VSS
CK
SBa
DQa
NC
VDDQ DQb
VSS
SW
VSS
NC VDDQ
M
VDDQ DQd
R
H
L
M
P
F
DQb
L
N
D
3
G
DQc
J
C
DQb
G
H
B
2
E
DQc
F
A
1
DQd
DQd
NC
NC
DQd
DQd
SA
NC
VDDQ TMS
VSS
VSS
VSS
VSS
SA
TDI
SW
SA
SA
VDD
SA
TCK
MCM69R738A•MCM69R820A
2
VSS
VSS
VSS
VDD
SA
TDO
DQa VDDQ
DQa
DQa
SA
NC
DQa
DQa
NC
ZZ
NC VDDQ
N
P
R
DQb
NC
VSS
SA
VSS
DQa
NC
NC
DQb
VSS
SA
VSS
NC
DQa
NC
SA
VSS
VDD
VDD
SA
NC
NC
SA
SA
NC
SA
SA
ZZ
TDI
TCK
TDO
T
U
VDDQ TMS
NC VDDQ
MOTOROLA FAST SRAM
MCM69R738A PIN DESCRIPTIONS
PBGA Pin Locations
Symbol
Type
4K
CK
Input
Address, data in and control input register clock. Active high.
4L
CK
Input
Address, data in and control input register clock. Active low.
(a) 6K, 7K, 6L, 7L, 6M, 6N, 7N, 6P, 7P
(b) 6D, 7D, 6E, 7E, 6F, 6G, 7G, 6H, 7H
(c) 1D, 2D, 1E, 2E, 2F, 1G, 2G, 1H, 2H
(d) 1K, 2K, 1L, 2L, 2M, 1N, 2N, 1P, 2P
DQx
I/O
4F
G
Input
Output Enable: Asynchronous pin, active low.
2A, 3A, 5A, 6A, 3B, 5B, 2C, 3C,
5C, 6C, 4N, 4P, 2R, 6R, 3T, 4T, 5T
SA
Input
Synchronous Address Inputs: Registered on the rising clock edge.
5L, 5G, 3G, 3L
(a), (b), (c), (d)
SBx
Input
Synchronous Byte Write Enable: Enables writes to byte x in
conjunction with the SW input. Has no effect on read cycles, active
low.
4E
SS
Input
Synchronous Chip Enable: Registered on the rising clock edge, active
low.
4M
SW
Input
Synchronous Write: Registered on the rising clock edge, active low.
Writes all enabled bytes.
4U
TCK
Input
Test Clock (JTAG).
3U
TDI
Input
Test Data In (JTAG).
5U
TDO
Output
2U
TMS
Input
Test Mode Select (JTAG).
7T
ZZ
Input
Enables sleep mode, active high.
4C, 2J, 4J, 6J, 4R, 5R
VDD
Supply
Core Power Supply.
1A, 7A, 1F, 7F, 1J, 7J, 1M, 7M, 1U, 7U
VDDQ
Supply
Output Power Supply: provides operating power for output buffers.
3D, 5D, 3E, 5E, 3F, 5F, 3H, 5H,
3K, 5K, 3M, 5M, 3N, 5N, 3P, 5P, 3R
VSS
Supply
Ground.
4A, 1B, 2B, 4B, 6B, 7B, 1C, 7C, 4D,
4G, 4H, 3J, 5J, 1R, 7R, 1T, 2T, 6T, 6U
NC
—
MOTOROLA FAST SRAM
Description
Synchronous Data I/O.
Test Data Out (JTAG).
No Connection: There is no connection to the chip.
Note: 3J and 5J are tied common.
MCM69R738A•MCM69R820A
3
MCM69R820A PIN DESCRIPTIONS
PBGA Pin Locations
Symbol
Type
4K
CK
Input
Address, data in and control input register clock. Active high.
4L
CK
Input
Address, data in and control input register clock. Active low.
(a) 6D, 7E, 6F, 7G, 6H, 7K, 6L, 6N, 7P
(b) 1D, 2E, 2G, 1H, 2K, 1L, 2M, 1N, 2P
DQx
I/O
4F
G
Input
Output Enable: Asynchronous pin, active low.
2A, 3A, 5A, 6A, 3B, 5B, 2C, 3C, 5C,
6C, 4N, 4P, 2R, 6R, 2T, 3T, 5T, 6T
SA
Input
Synchronous Address Inputs: Registered on the rising clock edge.
5L, 3G
(a), (b)
SBx
Input
Synchronous Byte Write Enable: Enables writes to byte x in
conjunction with the SW input. Has no effect on read cycles, active
low.
4E
SS
Input
Synchronous Chip Enable: Registered on the rising clock edge, active
low.
4M
SW
Input
Synchronous Write: Registered on the rising clock edge, active low.
Writes all enabled bytes.
4U
TCK
Input
Test Clock (JTAG).
3U
TDI
Input
Test Data In (JTAG).
5U
TDO
Output
2U
TMS
Input
Test Mode Select (JTAG).
Enables sleep mode, active high.
Description
Synchronous Data I/O.
Test Data Out (JTAG).
7T
ZZ
Input
4C, 2J, 4J, 6J, 4R, 5R
VDD
Supply
Core Power Supply.
1A, 7A, 1F, 7F, 1J, 7J, 1M, 7M, 1U, 7U
VDDQ
Supply
Output Power Supply: provides operating power for output buffers.
3D, 5D, 3E, 5E, 3F, 5F, 5G, 3H, 5H,
3K, 5K, 3L, 3M, 5M, 3N, 5N, 3P, 5P, 3R
VSS
Supply
Ground.
4A, 1B, 2B, 4B, 6B, 7B, 1C, 7C,
2D, 4D, 7D, 1E, 6E, 2F, 1G, 4G, 6G,
2H, 4H, 7H, 3J, 5J, 1K, 6K, 2L, 7L, 6M, 2N,
7N, 1P, 6P, 1R, 7R, 1T, 4T, 6U
NC
—
MCM69R738A•MCM69R820A
4
No Connection: There is no connection to the chip.
Note: 3J and 5J are tied common.
MOTOROLA FAST SRAM
ABSOLUTE MAXIMUM RATINGS (Voltages Referenced to VSS, See Note 1)
Symbol
Value
Unit
VDD
– 0.5 to + 4.6
V
VDDQ
– 0.5 to VDD + 0.5
V
Voltage On Any Pin
Vin
– 0.5 to VDD + 0.5
V
Input Current (per I/O)
Iin
± 50
mA
Output Current (per I/O)
Iout
± 70
mA
Power Dissipation (See Note 2)
PD
—
W
Operating Temperature
TA
0 to + 70
°C
Temperature Under Bias
Tbias
–10 to + 85
°C
Tstg
– 55 to + 125
°C
Rating
Core Supply Voltage
Output Supply Voltage
Storage Temperature
This device contains circuitry to protect the
inputs against damage due to high static voltages or electric fields; however, it is advised
that normal precautions be taken to avoid
application of any voltage higher than maximum rated voltages to this high–impedance
circuit.
This BiCMOS memory circuit has been
designed to meet the dc and ac specifications
shown in the tables, after thermal equilibrium
has been established.
This device contains circuitry that will ensure
the output devices are in High–Z at power up.
NOTES:
1. Permanent device damage may occur if ABSOLUTE MAXIMUM RATINGS are
exceeded. Functional operation should be restricted to RECOMMENDED OPERATING CONDITIONS. Exposure to higher than recommended voltages for extended
periods of time could affect device reliability.
2. Power dissipation capability will be dependent upon package characteristics and use
environment. See enclosed thermal impedance data.
PBGA PACKAGE THERMAL CHARACTERISTICS
Rating
Junction to Ambient (Still Air)
Symbol
Max
Unit
Notes
RθJA
53
°C/W
1, 2
1, 2
Junction to Ambient (@200 ft/min)
Single Layer Board
RθJA
38
°C/W
Junction to Ambient (@200 ft/min)
Four Layer Board
RθJA
22
°C/W
Junction to Board (Bottom)
RθJB
14
°C/W
3
Junction to Case (Top)
RθJC
5
°C/W
4
NOTES:
1. Junction temperature is a function of on–chip power dissipation, package thermal resistance, mounting site (board) temperature, ambient
temperature, air flow, power dissipation of other components on the board, and board thermal resistance.
2. Per SEMI G38–87.
3. Indicates the average thermal resistance between the die and the printed circuit board.
4. Indicates the average thermal resistance between the die and the case top surface as measured by the cold plate method (MIL SPEC–883
Method 1012.1).
CLOCK TRUTH TABLE
K
ZZ
SS
SW
SBa
SBb
SBc
SBd
DQ (n)
DQ (n+1)
Mode
L–H
L
L
H
X
X
X
X
X
Dout 0–35
Read Cycle All Bytes
L–H
L
L
L
L
H
H
H
High–Z
Din 0–8
Write Cycle 1st Byte
L–H
L
L
L
H
L
H
H
High–Z
L
L
L
H
H
L
H
High–Z
Din 9–17
Din 18–26
Write Cycle 2nd Byte
L–H
L–H
L
L
L
H
H
H
L
High–Z
Din 27–35
Write Cycle 4th Byte
L–H
L
L
L
L
L
L
L
High–Z
Din 0–35
Write Cycle All Bytes
L–H
L
L
L
H
H
H
H
High–Z
High–Z
Abort Write Cycle
L–H
L
H
H
X
X
X
X
X
High–Z
Deselect Cycle
L–H
L
H
L
X
X
X
X
High–Z
High–Z
Deselect Cycle
X
H
X
X
X
X
X
X
High–Z
High–Z
Sleep Mode
MOTOROLA FAST SRAM
Write Cycle 3rd Byte
MCM69R738A•MCM69R820A
5
DC OPERATING CONDITIONS AND CHARACTERISTICS
(0°C ≤ TA ≤ 70°C, Unless Otherwise Noted)
RECOMMENDED OPERATING CONDITIONS (See Notes 1 through 4)
Symbol
Min
Typical
–5
Typical
–6
Typical
–7
Typical
–8
Max
Unit
VDD
3.15
—
—
—
—
3.6
V
VDDQ
2.3
—
—
—
—
2.7
V
IDD1
—
—
390
450
360
420
330
390
320
370
490
550
mA
5
Quiescent Active Power Supply Current)
IDD2
—
180
180
180
180
250
mA
6, 10
Active Standby Power Supply Current)
ISB1
—
170
170
170
170
250
mA
7
Quiescent Standby Power Supply Current
ISB2
—
150
150
150
150
230
mA
8, 10
Parameter
Core Power Supply Voltage
Output Driver Supply Voltage
Active Power Supply Current
(x18)
(x36)
Notes
Sleep Mode Power Supply Current
ISB3
—
30
30
30
30
50
mA
9, 10
NOTES:
1. All data sheet parameters specified to full range of VDD unless otherwise noted. All voltages are referenced to voltage applied to VSS bumps.
2. Supply voltage applied to VDD connections.
3. Supply voltage applied to VDDQ connections.
4. All power supply currents measured with outputs open or deselected.
5. VDD = VDD (max), tKHKH = tKHKH (min), SS registered active, 50% read cycles.
6. VDD = VDD (max), tKHKH = dc, SS registered active.
7. VDD = VDD (max), tKHKH = tKHKH (min), SS registered inactive.
8. VDD = VDD (max), tKHKH = dc, SS registered inactive. ZZ low.
9. VDD = VDD (max), tKHKH = dc, SS registered inactive, ZZ high.
10. 200 mV ≥ Vin ≥ VDDQ – 200 mV.
DC INPUT CHARACTERISTICS
Parameter
Symbol
Min
Max
Unit
Notes
DC Input Logic High
VIH (dc)
1.7
VDD + 0.3
V
DC Input Logic Low
VIL (dc)
– 0.3
0.7
V
1
Input Leakage Current
Ilkg(1)
—
±5
µA
2
Clock Input Leakage Current
Iclkg(1)
—
±8
µA
2
Vin
– 0.3
VDDQ + 0.3
V
VDIF (dc)
0.2
VDDQ + 0.6
V
3
2.1
V
4
Notes
Clock Input Signal Voltage
Clock Input Differential Voltage
Clock Input Common Mode Voltage Range (See Figure 3)
VCM (dc)
1.1
NOTES:
1. Inputs may undershoot to – 0.5 V (peak) for up to 20% tKHKH (e.g., 2 ns at a clock cycle time of 10 ns).
2. 0 V ≤ Vin ≤ VDDQ for all pins.
3. Minimum instantaneous differential input voltage required for differential input clock operation.
4. Maximum rejectable common mode input voltage variation.
DC OUTPUT CHARACTERISTICS
Parameter
Symbol
Min
Max
Unit
Ilkg(0)
–1.0
1.0
µA
Output Low Voltage
VOL
—
0.7
V
1
Output High Voltage
VOH
1.7
—
V
2
Output Leakage Current
NOTES:
1. IOL = 8.0 mA.
2. IOH = – 8.0 mA.
CAPACITANCE (f = 1.0 MHz, dV = 3.0 V, 0°C ≤ TA ≤ 70°C, Periodically Sampled Rather Than 100% Tested)
Symbol
Typ
Max
Unit
Input Capacitance
Cin
4
5
pF
Input/Output Capacitance
CI/O
7
8
pF
CK, CK Capacitance
CCK
4
5
pF
Characteristic
MCM69R738A•MCM69R820A
6
MOTOROLA FAST SRAM
AC OPERATING CONDITIONS AND CHARACTERISTICS
(0°C ≤ TA ≤ 70°C, Unless Otherwise Noted)
Clock Input Timing Reference Level . . . . . . Differential Cross–Point
Clock Input Pulse Level . . . . . . . . . . . . . . . . . . . . . . . . . 1.8 V to 2.1 V
RθJA Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TBD
Input Pulse Levels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 to 2.5 V
Input Rise/Fall Time . . . . . . . . . . . . . . . . . . . . . . 1 V/ns (20% to 80%)
Input Timing Measurement Reference Level . . . . . . . . . . . . . . 1.25 V
Output Timing Reference Level . . . . . . . . . . . . . . . . . . . . . . . . . 1.25 V
READ/WRITE CYCLE TIMING (See Note 1)
MCM69R738A–5
MCM69R820A–5
Parameter
MCM69R738A–6
MCM69R820A–6
MCM69R738A–7
MCM69R820A–7
MCM69R738A–8
MCM69R820A–8
Symbol
Min
Max
Min
Max
Min
Max
Min
Max
Unit
Cycle Time
tKHKH
5
—
6
—
7
—
8
—
ns
Clock High Pulse Width
tKHKL
2
—
2.4
—
2.8
—
3.2
—
ns
Clock Low Pulse Width
Note
s
tKLKH
2
—
2.4
—
2.8
—
3.2
—
ns
Clock High to Output Low–Z
tKHQX1
1
—
1
—
1
—
1
—
ns
Clock High to Output Valid
tKHQV
—
2.5
—
3
—
3.5
—
4
ns
Clock High to Output Hold
tKHQX
0.5
—
0.5
—
0.5
—
0.5
—
ns
2
Clock High to Output High–Z
tKHQZ
—
2.5
—
3
0
3.5
0
4
ns
2, 3
Output Enable Low to Output
Low–Z
tGLQX
0.5
—
0.5
—
0.5
—
0.5
—
ns
Output Enable Low to Output
Valid
tGLQV
—
2.5
—
3
—
3.5
—
4
ns
Output Enable to Output Hold
tGHQX
0.5
—
0.5
—
0.5
—
0.5
—
ns
Output Enable High to Output
High–Z
tGHQZ
—
2.5
—
3
—
3.5
—
4
ns
Setup Times:
Address
Data In
Chip Select
Write Enable
tAVKH
tDVKH
tSVKH
tWVKH
0.5
—
0.5
—
0.5
—
0.5
—
ns
Hold Times:
Address
Data In
Chip Select
Write Enable
tKHAX
tKHDX
tKHSX
tKHWX
1
—
1
—
1
—
1
—
ns
2, 3
2, 3
NOTES:
1. In no case may control input signals (e.g., SS) be operated with pulse widths less than the minimum clock input pulse width specifications
(e.g., tKHKL) or at frequencies that exceed the applied K clock frequency.
2. This parameter is sampled and not 100% tested.
3. Measured at ± 200 mV from steady state.
TIMING LIMITS
VDDQ/2
50 Ω
DEVICE
UNDER
TEST
50 Ω
The table of timing values shows either a minimum or
a maximum limit for each parameter. Input requirements are specified from the external system point of
view. Thus, address setup time is shown as a minimum
since the system must supply at least that much time
(even though most devices do not require it). On the other hand, responses from the memory are specified from
the device point of view. Thus, the access time is shown
as a maximum since the device never provides data later than that time.
Figure 1. AC Test Load
MOTOROLA FAST SRAM
MCM69R738A•MCM69R820A
7
VOH
VSS
50%
100%
20% tKHKH
Figure 2. Undershoot Voltage
VDDQ
VTR
CROSSING POINT
VDIF
VCP
VCM*
VSS
*VCM, the Common Mode Input Voltage, equals VTR – ((VTR – VCP)/2).
Figure 3. Differential Inputs/Common Mode Input Voltage
MCM69R738A•MCM69R820A
8
MOTOROLA FAST SRAM
REGISTER/REGISTER READ–WRITE–READ CYCLES
t KHKH
t KHKL
CK
t AVKH
t KLKH
t KHAX
SA
A0
A1
t SVKH
A2
A3
A4
t KHSX
SS
t WVKH
t KHWX
SW
SBx
G
VIL
t KHQX1
t KHQZ
t KHQV
t KHDX
t DVKH
t KHQX
DQx
MOTOROLA FAST SRAM
Q–1
Q0
Q1
D2
Q3
MCM69R738A•MCM69R820A
9
REGISTER/REGISTER READ–WRITE–READ
(G Controlled)
t KHKH
t KHKL
CK
t AVKH
t KLKH
t KHAX
SA
A0
A2
A1
A3
A4
SS
VIL
SW
SBx
G
t GLQV
t GLQX
t GHQZ
DQx
MCM69R738A•MCM69R820A
10
Q–1
Q0
Q1
D2
t GHQX
Q3
MOTOROLA FAST SRAM
FUNCTIONAL OPERATION
READ AND WRITE OPERATIONS
All control signals except G are registered on the rising
edge of the CK clock. These signals must meet the setup
and hold times shown in the AC Characteristics table. On the
rising edge of the following clock, read data is clocked into
the output register and available at the outputs at tKHQV. During this same cycle a new read address can be applied to the
address pins.
A deselect cycle (dead cycle) must occur prior to a write
cycle. Read cycles may follow write cycles immediately.
G, SS, and SW control output drive. Chip deselect via a
high on SS at the rising edge of the CK clock has its effect on
the output drivers after the next rising edge of the CK clock.
SW low deselects the output drivers immediately (on the
same cycle). Output selecting via a low on SS and high on
SW at a rising CK clock has its effect on the output drivers
after the next rising edge of the CK clock. Output drive is also
controlled directly by output enable, G. G is an asynchronous
input. No clock edges are required to enable/disable the output using G.
Output data will be valid the latter of tGLQV and tKHQV. Outputs will begin driving at tKHQX1. Outputs will hold previous
data until tKHQX or tGHQX.
WRITE AND BYTE WRITE FUNCTIONS
Note that in the following discussion the term “byte” refers
to nine bits of the RAM I/O bus. In all cases, the timing parameters described for synchronous write input (SW) apply
to each of the byte write enable inputs (SBa, SBb, etc.).
Byte write enable inputs have no effect on read cycles.
This allows the system designer not interested in performing
MOTOROLA FAST SRAM
byte writes to connect the byte enable inputs to active low
(VSS). Reads of all bytes proceed normally and write cycles,
activated via a low on SW, and the rising edge of the CK
clock, write the entire RAM I/O width. This way the designer
is spared having to drive multiple write input buffer loads.
Byte writes are performed using the byte write enable inputs in conjunction with the synchronous write input (SW). It
is important to note that writing any one byte will inhibit a read
of all bytes at the current address. The RAM cannot simultaneously read one byte and write another at the same address. A write cycle initiated with none of the byte write
enable inputs active is neither a read or a write. No write will
occur, but the outputs will be deselected as in a normal write
cycle.
LATE WRITE
The write address is sampled on the first rising edge of
clock and write data is sampled on the following rising edge.
The late write feature is implemented with single stage
write buffering. Write buffering is transparent to the user. A
comparator monitors the address bus and, when necessary,
routes buffer contents to the outputs to assure coherent operation. This occurs in all cases whether there is a byte write
or a full word is written.
POWER UP AND INITIALIZATION
The following supply voltage application sequence is recommended: VSS, VDD, then VDDQ. Please note, per the Absolute Maximum Ratings table, VDDQ is not to exceed VDD +
0.5 V, whatever the instantaneous value of VDD. Once supplies have reached specification levels, a minimum dwell of
1.0 µs with C/K clock inputs cycling is required before beginning normal operations.
MCM69R738A•MCM69R820A
11
SERIAL BOUNDARY SCAN TEST ACCESS PORT OPERATION
OVERVIEW
The serial boundary scan test access port (TAP) on this
RAM is designed to operate in a manner consistent with
IEEE Standard 1149.1–1990 (commonly referred to as
JTAG), but does not implement all of the functions required
for 1149.1 compliance. Certain functions have been modified
or eliminated because their implementation places extra delays in the RAMs critical speed path. Nevertheless, the RAM
supports the standard TAP controller architecture. (The TAP
controller is the state machine that controls the TAPs operation) and can be expected to function in a manner that does
not conflict with the operation of devices with Standard
1149.1 compliant TAPs. The TAP operates using conventional JEDEC Standard 8–1B Low Voltage (3.3 V) TTL / CMOS
logic level signaling.
DISABLING THE TEST ACCESS PORT
It is possible to use this device without utilizing the TAP. To
disable the TAP Controller without interfering with normal operation of the device, TCK must be tied to VSS to preclude
mid level inputs. TDI and TMS are designed so an undriven
input will produce a response identical to the application of a
logic 1, and may be left unconnected. But they may also be
tied to VDD through a 1 k resistor. TDO should be left unconnected.
TAP DC OPERATING CHARACTERISTICS
(0°C ≤ TA ≤ 70°C, Unless Otherwise Noted)
Parameter
Symbol
Min
Max
Unit
Note
Logic Input Logic High
VIH1
2.0
VDD + 0.3
V
Logic Input Logic Low
VIL1
– 0.3
0.8
V
Logic Input Leakage Current
Ilkg
—
±5
µA
1
CMOS Output Logic Low
VOL1
—
0.2
V
2
CMOS Output Logic High
VOH1
VDD – 0.2
—
V
3
TTL Output Logic Low
VOL2
—
0.4
V
4
TTL Output Logic High
VOH2
2.4
—
V
5
NOTES:
1. 0 V ± Vin ± VDDQ for all logic input pins.
2. IOL1 ≤ 100 µA @ VOL = 0.2 V. Sampled, not 100% tested.
3. |IOH1| ≤ 100 µA @ VDDQ – 0.2 V. Sampled, not 100% tested.
4. IOL2 ≤ 8 mA @ VOL = 0.4 V.
5. |IOH2| ≤ 8 mA @ VOH = 2.4 V.
MCM69R738A•MCM69R820A
12
MOTOROLA FAST SRAM
TAP AC OPERATING CONDITIONS AND CHARACTERISTICS
(0°C ≤ TA ≤ 70°C, Unless Otherwise Noted)
Output Test Load . . . . . . 50 Ω Parallel Terminated T–line with 20 pF
Receiver Input Capacitance
Test Load Termination Supply Voltage (VT) . . . . . . . . . . . . . . . 1.5 V
Input Pulse Levels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 to 3.0 V
Input Rise/Fall Time . . . . . . . . . . . . . . . . . . . . . . 1 V/ns (20% to 80%)
Input Timing Measurement Reference Level . . . . . . . . . . . . . . . 1.5 V
Output Timing Reference Level . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5 V
TAP CONTROLLER TIMING
Symbol
Min
Max
Unit
Cycle Time
Parameter
tTHTH
100
—
ns
Clock High Time
tTHTL
40
—
ns
Clock Low Time
tTLTH
40
—
ns
TMS Setup
tMVTH
10
—
ns
TMS Hold
tTHMX
10
—
ns
TDI Valid to TCK High
tDVTH
10
—
ns
TCK High to TDI Don’t Care
tTHDX
10
—
ns
Capture Setup
tCS
10
—
ns
1
Capture Hold
tCH
10
—
ns
1
TCK Low to TDO Unknown
tTLQX
0
—
ns
TCK Low to TDO Valid
tTLOV
—
20
ns
Notes
NOTES:
1. tCS + tCH defines the minimum pause in RAM I/O pad transitions to assure accurate pad data capture.
AC TEST LOAD
1.5 V
50 Ω
DEVICE
UNDER
TEST
50 Ω
20 pF
TAP CONTROLLER TIMING DIAGRAM
tTHTH
tTLTH
TEST CLOCK
(TCK)
tTHTL
tTHMX
tMVTH
TEST MODE SELECT
(TMS)
tTHDX
tDVTH
TEST DATA IN
(TDI)
tTLQV
tTLQX
TEST DATA OUT
(TDO)
MOTOROLA FAST SRAM
MCM69R738A•MCM69R820A
13
TEST ACCESS PORT PINS
TCK – TEST CLOCK (INPUT)
Clocks all TAP events. All inputs are captured on the rising
edge of TCK and all outputs propagate from the falling edge
of TCK.
TMS – TEST MODE SELECT (INPUT)
The TMS input is sampled on the rising edge of TCK. This
is the command input for the TAP controller state machine.
An undriven TMS input will produce the same result as a logic one input level.
TDI – TEST DATA IN (INPUT)
The TDI input is sampled on the rising edge of TCK. This is
the input side of the serial registers placed between TDI and
TDO. The register placed between TDI and TDO is determined by the state of the TAP controller state machine and
the instruction that is currently loaded in the TAP instruction
register (refer to Figure 5 TAP Controller State Diagram). An
undriven TDI pin will produce the same result as a logic one
input level.
TDO – TEST DATA OUT (OUTPUT)
Output that is active depending on the state of the TAP
state machine (refer to Figure 5 TAP Controller State Diagram). Output changes in response to the falling edge of
TCK. This is the output side of the serial registers placed between TDI and TDO.
TRST – TAP RESET
This device does not have a TRST pin. TRST is optional in
IEEE 1149.1. The test–logic reset state is entered while TMS
is held high for five rising edges of TCK. Power on reset circuitry is included internally. This type of reset does not affect
the operation of the system logic. The reset affects test logic
only.
TEST ACCESS PORT REGISTERS
OVERVIEW
The various TAP registers are selected (one at a time) via
the sequences of ones and zeros input to the TMS pin as the
TCK is strobed. Each of the TAPs registers are serial shift
registers that capture serial input data on the rising edge of
TCK and push serial data out on subsequent falling edge of
TCK. When a register is selected it is “placed” between the
TDI and TDO pins.
INSTRUCTION REGISTER
The instruction register holds the instructions that are
executed by the TAP controller when it is moved into the run
test/idle or the various data register states. The instructions
are three bits long. The register can be loaded when it is
placed between the TDI and TDO pins. The instruction register is automatically preloaded with the IDCODE instruction at
power–up or whenever the controller is placed in test–logic–
reset state.
BYPASS REGISTER
The bypass register is a single bit register that can be
placed between TDI and TDO. It allows serial test data to be
passed through the RAMs TAP to another device in the scan
chain with as little delay as possible.
MCM69R738A•MCM69R820A
14
BOUNDARY SCAN REGISTER
The boundary scan register is identical in length to the
number of active input and I/O connections on the RAM (not
counting the TAP pins). This also includes a number of place
holder locations (always set to a logic 1) reserved for density
upgrade address pins. There are a total of 70 bits in the case
of the x36 device and 51 bits in the case of the x18 device.
The boundary scan register, under the control of the TAP
controller, is loaded with the contents of the RAMs I/O ring
when the controller is in capture–DR state and then is placed
between the TDI and TDO pins when the controller is moved
to shift–DR state. Several TAP instructions can be used to
activate the boundary scan register.
The Bump/Bit Scan Order tables describe which device
bump connects to each boundary scan register location. The
first column defines the bit’s position in the boundary scan
register. The shift register bit nearest TDO (i.e., first to be
shifted out) is defined as bit 1. The second column is the
name of the input or I/O at the bump and the third column is
the bump number.
IDENTIFICATION (ID) REGISTER
The ID Register is a 32 bit register that is loaded with a device and vendor specific 32 bit code when the controller is
put in capture–DR state with the IDCODE command loaded
in the instruction register. The code is loaded from a 32 bit
on–chip ROM. It describes various attributes of the RAM as
indicated below. The register is then placed between the TDI
and TDO pins when the controller is moved into shift–DR
state. Bit 0 in the register is the LSB and the first to reach
TDO when shifting begins.
ID Register Presence Indicator
Bit #
0
Value
1
Motorola JEDEC ID Code (Compressed Format, per
IEEE Standard 1149.1 – 1990
Bit #
11
10
9
8
7
6
5
4
3
2
1
Value
0
0
0
0
0
0
0
1
1
1
0
Reserved For Future Use
Bit #
17
16
15
14
13
12
Value
x
x
x
x
x
x
Configuration
Bit #
22
21
20
19
18
128Kx36
Value
0
0
1
0
0
256Kx18
Value
0
0
0
1
1
Configuration
Bit #
27
26
25
24
23
128Kx36
Value
0
0
1
0
1
256Kx18
Value
0
0
1
1
0
Device Width
Device Depth
Revision Number
Bit #
31
30
29
28
Value
x
x
x
x
Figure 4. ID Register Bit Meanings
MOTOROLA FAST SRAM
MCM69R738A Bump/Bit Scan Order
BIT
#
Signal
Name
Bump
ID
Bit
#
1
M2
5R
2
SA
4P
3
SA
4
5
MCM69R820A Bump/Bit Scan Order
Signal
Name
Bump
ID
Bit
#
Signal
Name
Bump
ID
Bit
#
Signal
Name
Bump
ID
36
SA
3B
1
M2
5R
36
SBb
3G
37
NC
2B
2
SA
6T
37
NC
4D
4T
38
SA
3A
3
SA
4P
38
SS
4E
SA
6R
39
SA
3C
4
SA
6R
39
NC
4G
SA
5T
40
SA
2C
5
SA
5T
40
NC
4H
6
ZZ
7T
41
SA
2A
6
ZZ
7T
41
SW
4M
7
DQa
6P
42
DQc
2D
7
DQa
7P
42
DQb
2K
8
DQa
7P
43
DQc
1D
8
DQa
6N
43
DQb
1L
9
DQa
6N
44
DQc
2E
9
DQa
6L
44
DQb
2M
10
DQa
7N
45
DQc
1E
10
DQa
7K
45
DQb
1N
11
DQa
6M
46
DQc
2F
11
SBa
5L
46
DQb
2P
12
DQa
6L
47
DQc
2G
12
CK
4L
47
SA
3T
13
DQa
7L
48
DQc
1G
13
CK
4K
48
SA
2R
14
DQa
6K
49
DQc
2H
14
G
4F
49
SA
4N
15
DQa
7K
50
DQc
1H
15
DQa
6H
50
SA
2T
16
SBa
5L
51
SBc
3G
16
DQa
7G
51
M1
3R
17
CK
4L
52
NC
4D
17
DQa
6F
18
CK
4K
53
SS
4E
18
DQa
7E
19
G
4F
54
NC
4G
19
DQa
6D
20
SBb
5G
55
NC
4H
20
SA
6A
21
DQb
7H
56
SW
4M
21
SA
6C
22
DQb
6H
57
SBd
3L
22
SA
5C
23
DQb
7G
58
DQd
1K
23
SA
5A
24
DQb
6G
59
DQd
2K
24
NC
6B
25
DQb
6F
60
DQd
1L
25
SA
5B
26
DQb
7E
61
DQd
2L
26
SA
3B
27
DQb
6E
62
DQd
2M
27
NC
2B
28
DQb
7D
63
DQd
1N
28
SA
3A
29
DQb
6D
64
DQd
2N
29
SA
3C
30
SA
6A
65
DQd
1P
30
SA
2C
31
SA
6C
66
DQd
2P
31
SA
2A
32
SA
5C
67
SA
3T
32
DQb
1D
33
SA
5A
68
SA
2R
33
DQb
2E
34
NC
6B
69
SA
4N
34
DQb
2G
35
SA
5B
70
M1
3R
35
DQb
1H
NOTES:
1. The NC pads listed in this table are indeed no connects, but are represented in the boundary scan register by a “place holder” bit that is forced
to logic 1. These pads are reserved for use as address inputs on higher density RAMs that follow this pad out and scan order standard.
2. In scan mode, differential inputs CK and CK are referenced to each other and must be at opposite logic levels for reliable operation.
3. M1 and M2 are not ordinary inputs and may not respond to standard I/O logic levels. M1 and M2 must be driven to within 100 mV of a VDD
or VSS supply rail to ensure consistent results.
4. ZZ must remain at VIL during boundary scan to ensure consistent results.
MOTOROLA FAST SRAM
MCM69R738A•MCM69R820A
15
TAP CONTROLLER INSTRUCTION SET
OVERVIEW
There are two classes of instructions defined in the Standard 1149.1–1990; the standard (public) instructions, and device specific (private) instructions. Some public instructions,
are mandatory for 1149.1 compliance. Optional public
instructions must be implemented in prescribed ways.
Although the TAP controller in this device follows the
1149.1 conventions, it is not 1194.1 compliant because some
of the mandatory instructions are not fully implemented. The
TAP on this device may be used to monitor all input and I/O
pads, but cannot be used to load address, data or control signals into the RAM or to preload the I/O buffers. In other
words, the device will not perform Standard 1149.1 EXTEST,
INTEST or the preload portion of the SAMPLE / PRELOAD
command.
When the TAP controller is placed in capture–IR state the
two least significant bits of the instruction register are loaded
with 01. When the controller is moved to the shift–IR state
the instruction register is placed between TDI and TDO. In
this state the desired instruction is serially loaded through the
TDI input (while the previous contents are shifted out at
TDO). For all instructions, the TAP executes newly loaded
instructions only when the controller is moved to update–IR
state. The TAP instruction sets for this device are listed in the
following tables.
STANDARD (PUBLIC) INSTRUCTIONS
BYPASS
The BYPASS instruction is loaded in the instruction register when the bypass register is placed between TDI and
TDO. This occurs when the TAP controller is moved to the
shift–DR state. This allows the board level scan path to be
shortened to facilitate testing of other devices in the scan
path.
SAMPLE/PRELOAD
Sample/preload is a Standard 1149.1 mandatory public
instruction. When the sample / preload instruction is loaded
in the Instruction register, moving the TAP controller into the
capture–DR state loads the data in the RAMs input and I/O
buffers into the boundary scan register. Because the RAM
clock(s) are independent from the TAP clock (TCK) it is possible for the TAP to attempt to capture the I/O ring contents
while the input buffers are in transition (i.e. in a metastable
state). Although allowing the TAP to sample metastable inputs will not harm the device, repeatable results cannot be
MCM69R738A•MCM69R820A
16
expected. RAM input signals must be stabilized for long
enough to meet the TAPs input data capture set–up plus hold
time (tCS plus tCH). The RAMs clock inputs need not be
paused for any other TAP operation except capturing the I/O
ring contents into the boundary scan register.
Moving the controller to shift–DR state then places the
boundary scan register between the TDI and TDO pins. Because the PRELOAD portion of the command is not implemented in this device, moving the controller to the
update–DR state with the SAMPLE / PRELOAD instruction
loaded in the instruction register has the same effect as the
pause–DR command. This functionality is not Standard
1149.1 compliant.
EXTEST
EXTEST is an IEEE 1149.1 mandatory public instruction. It
is to be executed whenever the instruction register, whatever
length it may be in the device, is loaded with all logic 0s.
EXTEST is not implemented in this device. Therefore this
device is not 1149.1 compliant. Nevertheless, this RAMs TAP
does respond to an all zeros instruction, as follows. With the
EXTEST (000) instruction loaded in the instruction register
the RAM responds just as it does in response to the
SAMPLE / PRELOAD instruction described above, except
the RAM outputs are forced to high–Z any time the
instruction is loaded.
IDCODE
The IDCODE instruction causes the ID ROM to be loaded
into the ID register when the controller is in capture–DR
mode and places the ID register between the TDI and TDO
pins in shift–DR mode. The IDCODE instruction is the default
instruction loaded in at power up and any time the controller
is placed in the test–logic–reset state.
THE DEVICE SPECIFIC (PUBLIC) INSTRUCTION
SAMPLE–Z
If the SAMPLE–Z instruction is loaded in the instruction
register, all RAM outputs are forced to an inactive drive state
(high–Z) and the boundary scan register is connected between TDI and TDO when the TAP controller. is moved to the
shift–DR state.
THE DEVICE SPECIFIC (PRIVATE) INSTRUCTION
NOOP
Do not use these instructions; they are reserved for future
use.
MOTOROLA FAST SRAM
STANDARD (PUBLIC) INSTRUCTION CODES
Instruction
Code*
EXTEST
000
IDCODE
001**
Description
Captures I/O ring contents. Places the boundary scan register between TDI and TDO. Forces all
RAM outputs to High–Z state. *NOT 1149.1 COMPLIANT*
Preloads ID register and places it between TDI and TDO.
Does not affect RAM operation.
SAMPLE / PRELOAD
100
Captures I/O ring contents. Places the boundary scan register between TDI and TDO. Does not
affect RAM operation.
Does not implement 1149.1 Preload function. * NOT 1149.1 COMPLIANT *
BYPASS
111
Places bypass register between TDI and TDO.
Does not affect RAM operation.
SAMPLE–Z
010
Captures I/O ring contents. Places the boundary scan register between TDI and TDO. Forces all
RAM output drivers to High–Z.
* Instruction codes expressed in binary, MSB on left, LSB on right.
** Default instruction automatically loaded at power–up and in test–logic–reset state.
STANDARD (PRIVATE) INSTRUCTION CODES
Instruction
Code*
Description
NO OP
011
Do not use these instructions; they are reserved for future use.
NO OP
101
Do not use these instructions; they are reserved for future use.
NO OP
110
Do not use these instructions; they are reserved for future use.
* Instruction codes expressed in binary, MSB on left, LSB on right.
1
TEST–LOGIC
RESET
0
RUN–TEST/
IDLE
0
1
SELECT
DR–SCAN
SELECT
IR–SCAN
1
0
1
1
0
1
CAPTURE–DR
CAPTURE–IR
0
0
SHIFT–DR
SHIFT–IR
0
0
1
1
1
1
EXIT1–DR
EXIT1–IR
0
0
PAUSE–DR
PAUSE–IR
0
1
0
1
EXIT2–DR
0
EXIT2–IR
1
1
UPDATE–DR
1
0
0
UPDATE–IR
1
0
NOTE: The value adjacent to each state transition represents the signal present at TMS at the rising edge of TCK.
Figure 5. TAP Controller State Diagram
MOTOROLA FAST SRAM
MCM69R738A•MCM69R820A
17
ORDERING INFORMATION
(Order by Full Part Number)
MCM
69R738A
69R820A XX
X
X
R = Tape and Reel, Blank = Tray
Motorola Memory Prefix
Speed (5 =5 ns, 6 = 6 ns, 7 = 7 ns, 8 = 8 ns)
Part Number
Package (ZP = PBGA)
Full Part Numbers — MCM69R738AZP5
MCM69R820AZP5
MCM69R738AZP5R
MCM69R820AZP5R
MCM69R738A•MCM69R820A
18
MCM69R738AZP6
MCM69R820AZP6
MCM69R738AZP6R
MCM69R820AZP6R
MCM69R738AZP7
MCM69R820AZP7
MCM69R738AZP7R
MCM69R820AZP7R
MCM69R738AZP8
MCM69R820AZP8
MCM69R738AZP8R
MCM69R820AZP8R
MOTOROLA FAST SRAM
PACKAGE DIMENSIONS
ZP PACKAGE
7 X 17 BUMP PBGA
CASE 999–01
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: MILLIMETER.
0.20 (0.008)
4X
A
–W–
PIN 1A
IDENTIFIER
7 6 5 4 3 2 1
B
–L–
P
S
16X
N
A
B
C
D
E
F
G
H
J
K
L
M
N
P
R
T
U
G
6X
DIM
A
B
C
D
E
F
G
K
N
P
R
S
119X
G
INCHES
MIN
MAX
0.551 BSC
0.866 BSC
–––
0.094
0.024
0.035
0.020
0.028
0.051
0.067
0.050 BSC
0.031
0.039
0.469
0.476
0.764
0.772
0.300 BSC
0.800 BSC
D
R
0.30 (0.012)
S
T W
BOTTOM VIEW
0.10 (0.004)
S
T
TOP VIEW
MILLIMETERS
MIN
MAX
14.00 BSC
22.00 BSC
–––
2.40
0.60
0.90
0.50
0.70
1.30
1.70
1.27 BSC
0.80
1.00
11.90
12.10
19.40
19.60
7.62 BSC
20.32 BSC
S
L
S
0.25 (0.010) T
F
0.35 (0.014) T
0.15 (0.006) T
C
–T–
K
E
MOTOROLA FAST SRAM
SIDE VIEW
MCM69R738A•MCM69R820A
19
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the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and
specifically disclaims any and all liability, including without limitation consequential or incidental damages. “Typical” parameters which may be provided in Motorola
data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals”
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How to reach us:
USA / EUROPE / Locations Not Listed: Motorola Literature Distribution;
P.O. Box 5405, Denver, Colorado 80217. 1–303–675–2140 or 1–800–441–2447
JAPAN: Nippon Motorola Ltd.: SPD, Strategic Planning Office, 4–32–1,
Nishi–Gotanda, Shinagawa–ku, Tokyo 141, Japan. 81–3–5487–8488
Customer Focus Center: 1–800–521–6274
Mfax: [email protected] – TOUCHTONE 1–602–244–6609
ASIA/PACIFIC: Motorola Semiconductors H.K. Ltd.; 8B Tai Ping Industrial Park,
Motorola Fax Back System
– US & Canada ONLY 1–800–774–1848 51 Ting Kok Road, Tai Po, N.T., Hong Kong. 852–26629298
– http://sps.motorola.com/mfax/
HOME PAGE: http://motorola.com/sps/
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