ETC WED2DL36513V-B

WED2DL36513V
White Electronic Designs
512Kx36 Synchronous Pipeline Burst SRAM
FEATURES
DESCRIPTION
■ Fast clock speed: 200, 166, 150 & 133MHz
The WEDC SyncBurst - SRAM family employs highspeed, low-power CMOS designs that are fabricated
using an advanced CMOS process. WEDC’s 16Mb
SyncBurst SRAMs integrate two 512K x 18 SRAMs into
a single BGA package to provide 512K x 36 configuration. All synchronous inputs pass through registers controlled by a positive-edge-triggered single-clock input
(CLK). The synchronous inputs include all addresses, all
data inputs, active LOW chip enable (CE), burst control
inputs (ADSC, ADSP, ADV), byte write enables (BW0-3)
and global write (GW). Asynchronous inputs include the
output enable (OE), clock (CLK) and snooze enable (ZZ).
There is also a burst mode input (MODE) that selects
between interleaved and linear burst modes. Write Cycles
can be from one to four bytes wide, as controlled by the
write control inputs. Burst operation can be initiated with
either address status processor (ADSP) or address status controller (ADSC) inputs. Subsequent burst addresses can be internally generated as controlled by the
burst advance input (ADV).
■ Fast access times: 2.5ns, 3.5ns, 3.8ns & 4.0ns
■ Fast OE access times: 2.5ns, 3.5ns, 3.8ns 4.0ns
■ Available with 1.5ns setup and 0.5ns hold times or
1.0ns setup and hold times.
■ Single +3.3V power supply (V DD)
■ Seperate +3.3V or +2.5V isolated output buffer
supply (VDDQ)
■ Snooze Mode for reduced-power standby
■ Single-cycle deselect
■ Common data inputs and data outputs
■ Individual Byte Write control and Global Write
■ Clock-controlled and registered addresses, data
I/Os and control signals
■ Burst control (interleaved or linear burst)
■ Packaging:
• 119-bump BGA package
■ Low capacitive bus loading
*
■ IEEE 1149.1 JTAG Compatible Boundary Scan
FIG. 1
This data sheet describes a product under development, not fully
characterized, and is subject to change without notice.
PIN CONFIGURATION
BLOCK DIAGRAM
(TOP VIEW)
1
2
3
4
5
6
7
A
VDDQ
SA
SA
ADSP
SA
SA
VDDQ
B
NC
SA
SA
ADSC
SA
SA
NC
GW
ADV
SA
CLK
C
NC
SA
SA
VDD
SA
SA
NC
D
DQc
DQPc
VSS
NC
VSS
DQPb
DQb
E
DQc
DQc
VSS
CE
VSS
DQb
DQb
BWE
F
VDDQ
DQc
VSS
OE
VSS
DQb
VDDQ
MODE
G
DQc
DQc
BWc
ADV
BWb
DQb
DQb
H
DQc
DQc
VSS
GW
VSS
DQb
DQb
J
VDDQ
VDD
NC
VDD
NC
VDD
VDDQ
K
DQd
DQd
VSS
CLK
VSS
DQa
DQa
L
DQd
DQd
BWd
NC
BWa
DQa
DQa
M
VDDQ
DQd
VSS
BWE
VSS
DQa
VDDQ
N
DQd
DQd
VSS
SA1
VSS
DQa
DQa
P
DQd
DQPd
VSS
SA0
VSS
DQPa
DQa
R
NC
SA
MODE
VDD
NC
SA
NC
ADSP
ADSC
OE
512K x 18
SSRAM
DQa, DQPa
512K x 18
SSRAM
DQc, DQPc
DQb, DQPb
CE
ZZ
BWa
BWb
T
NC
NC
SA
SA
SA
NC
ZZ
BWc
U
VDDQ
TMD
TDI
TCK
TDO
NC
VDDQ
BWd
DQd, DQPd
* Enable on pins C7 and R7 are options for the three CE density only.
July 2002 Rev. 3
ECO #14637
1
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White Electronic Designs
WED2DL36513V
PIN DESCRIPTION
x36
CLK
4P
4N
2A, 2C, 2R, 2B
3A, 3B, 3C, 3T
4T, 5A, 5B, 5C,
5T, 6A, 6B, 6C, 6R
5L
5G
3G
3L
Symbol
Input
SA0
SA1
SA
Type
Pulse
Input
Description
The system clock input. All of the SSRAM inputs are sampled on the rising edge of the clock.
Synchronous Address Inputs: These inputs are registered and must meet the setup and hold
times around the rising edge of CLK.
BWa
BWb
BWc
BWd
Input
4M
BWE
Input
4H
GW
Input
4K
CLK
Input
4E
CE
Input
7T
ZZ
Input
4F
4G
OE
ADV
Input
Input
4A
ADSP
Input
4B
ADSC
Input
3R
MODE
Input
DQa
Input/
Output
Synchronous Byte Write Enables: These active LOW inputs allow individual bytes to be written
and must meet the setup and hold times around the rising edge of CLK. A byte write enable is
LOW for a WRITE cycle and HIGH for a READ cycle.
BWa controls DQa’s and DQPa; BWb controls DQb’s and DQPb; BWc controls DQc’s and DQPc;
BWd controls DQd’s and DQPd.
Byte Write Enable: This active LOW input permits BYTE WRITE operations and must meet the
setup and hold times around the rising edge of CLK.
Global Write: This active LOW input allows a full 36- bit WRITE to occur independent of the BWE
and BWx lines and mustmeet the setup and hold times around the rising edge of CLK.
Clock: This signal registers the address, data, chip enable, byte write enables and burst control inputs
on its rising edge. All synchronous inputs must meet setup and hold times around the clock’s rising edge.
Synchronous Chip Enable: This active LOW input is used to enable the device and conditions the
internal use of ADSP. CE is sampled only when a new external address is loaded.
Snooze Enable: This active HIGH, asynchronous input causes the device to enter a low-power standby
mode in which all data in the memory array is retained. When active, all other inputs are ignored.
Output Enable: This active LOW, asynchronous input enables the data I/O output drivers.
Synchronous Address Advance: This active LOW input is used to advance the internal burst counter,
controlling burst access after the external address is loaded. A HIGH on ADV effectively causes wait
states to be generated (no address advance). To ensure use of correct address during a WRITE
cycle, ADV must be HIGH at the rising edge of the first clock after an ADSP cycle is initiated.
Synchronous Address Status Processor: This active LOW input interrupts any ongoing burst, causing
a new external address to be registered. A READ is performed using the new address, independent of
the byte write enables and ADSC, but dependent upon CE, CE2 and CE2. ADSP is ignored if CE is
HIGH. Powerdown state is entered if CE 2 is LOW or CE2 is HIGH.
Synchronous Address Status Controller: This active LOW input interrupts any ongoing burst, causing
a new external address to be registered. A READ or WRITE is performed using the new address if CE
is LOW. ADSC is also used to place the chip into power-down state when CE is HIGH.
Mode: This input selects the burst sequence. A LOW on MODE selects “linear burst.” NC or HIGH on
this input selects “interleaved burst.” Do not alter input state while device is operating.
SRAM Data I/Os: Byte “a” is DQa’s; Byte “b” is DQb’s; Byte “c” is DQc’s;
Byte “d” is DQd’s. Input data must meet setup and hold times around rising edge of CLK.
(a) 6K, 6L, 6M, 6N,
7K, 7L, 7N, 7P
(b) 6E, 6F, 6G, 6H,
7D, 7E, 7G, 7H
(c) 1D, 1E, 1G, 1H
2E, 2F, 2G, 2H
(d) 1K, 1L, 1N, 1P,
2K, 2L, 2M, 2N
6P
6D
2D
2P
2J, 4C, 4J, 4R, 6J
1A, 1F, 1J, 1M 1U
7A, 7F, 7J, 7M, 7U
3D, 3E, 3F, 3H, 3K,
3M, 3N, 3P, 5D, 5E,
5F, 5H, 5K, 5M, 5N,
5P
2U
3U
4U
5U
DQb
DQc
DQd
DQPa
DQPb
DQPc
DQPd
VDD
VDDQ
Input/
Output
Byte “a” Parity is DQPa; Byte “b” Parity is DQPb; Byte “c” Parity is DQPc;
Byte “d” Parity is DQPd.
Supply
Supply
VSS
Supply
Power Supply: See DC Electrical Characteristics and Operating Conditions for range.
Isolated Output Buffer Supply: See DC Electrical Characteristics and Operating
Conditions for range.
Ground: GND.
TMS
TDI
TDO
TCK
Input
Input
Output
Input
Scan Test Mode Select
Scan Test Data In
Scan Test Data Out
Scan Test Clock
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INTERLEAVED BURST TABLE (MODE = NC OR HIGH)
First Address Second Address
External
Internal
X...X00
X...X01
X...X01
X....X00
X...X10
X...X11
X...X11
X...X10
INTERLEAVED BURST TABLE (MODE = LOW)
Third Address Fourth Address
Internal
Internal
X...X10
X...X11
X...X11
X...X10
X...X00
X...X01
X...X01
X...X00
First Address Second Address Third Address Fourth Address
External
Internal
Internal
Internal
X...X00
X...X01
X...X10
X...X11
X...X01
X....X10
X...X11
X...X00
X...X10
X...X11
X...X00
X...X01
X...X11
X...X00
X...X01
X...X10
TRUTH TABLE
Function
Deselected Cycle, Power-Down
Deselected Cycle, Power-Down
Deselected Cycle, Power-Down
Deselected Cycle, Power-Down
Deselected Cycle, Power-Down
SNOOZE MODE, Power-Down
READ Cycle, Begin Burst
READ Cycle, Begin Burst
WRITE Cycle, Begin Burst
READ Cycle, Begin Burst
READ Cycle, Begin Burst
READ Cycle, Continue Burst
READ Cycle, Continue Burst
READ Cycle, Continue Burst
READ Cycle, Continue Burst
WRITE Cycle, Continue Burst
WRITE Cycle, Continue Burst
READ Cycle, Suspend Burst
READ Cycle, Suspend Burst
READ Cycle, Suspend Burst
READ Cycle, Suspend Burst
WRITE Cycle, Suspend Burst
WRITE Cycle, Suspend Burst
Address
Used
None
None
None
None
None
None
External
External
External
External
External
Next
Next
Next
Next
Next
Next
Current
Current
Current
Current
Current
Current
CE
CE2
CE2
ZZ
ADSP
ADSC
ADV
WRITE
OE
CLK
DQ
H
L
L
L
L
X
L
L
L
L
L
X
X
H
H
X
H
X
X
H
H
X
H
X
X
H
X
H
X
L
L
L
L
L
X
X
X
X
X
X
X
X
X
X
X
X
X
L
X
L
X
X
H
H
H
H
H
X
X
X
X
X
X
X
X
X
X
X
X
L
L
L
L
L
H
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
X
L
L
H
H
X
L
L
H
H
H
H
H
X
X
H
X
H
H
X
X
H
X
L
X
X
L
L
X
X
X
L
L
L
H
H
H
H
H
H
H
H
H
H
H
H
X
X
X
X
X
X
X
X
X
X
X
L
L
L
L
L
L
H
H
H
H
H
H
X
X
X
X
X
X
X
X
L
H
H
H
H
H
H
L
L
H
H
H
H
L
L
X
X
X
X
X
X
L
H
X
L
H
L
H
L
H
X
X
L
H
L
H
X
X
L-H
L-H
L-H
L-H
L-H
X
L-H
L-H
L-H
L-H
L-H
L-H
L-H
L-H
L-H
L-H
L-H
L-H
L-H
L-H
L-H
L-H
L-H
High-Z
High-Z
High-Z
High-Z
High-Z
High-Z
Q
High-Z
D
Q
High-Z
Q
High-Z
Q
High-Z
D
D
Q
High-Z
Q
High-Z
D
D
NOTES:
1. X means “Don’t Care.” —— means active LOW. H means logic HIGH. L means logic LOW.
2. For WRITE, L means any one or more byte write enable signals (BWa, BWb, BWc or BWd) and BWE are LOW or GW is LOW. WRITE = H for
all BWx, BWE, GW HIGH.
3. BWa enables WRITEs to DQa’s and DQPa. BWb enables WRITEs to DQb’s and DQPb. BWc enables WRITEs to DQc’s and DQPc. BWd
enables WRITEs to DQd’s and DQPd.
4. All inputs except OE and ZZ must meet setup and hold times around the rising edge (LOW to HIGH) of CLK.
5. Wait states are inserted by suspending burst.
6. For a WRITE operation following a READ operation, OE must be HIGH before the input data setup time and held HIGH throughout the input
data hold time.
7. This device contains circuitry that will ensure the outputs will be in High-Z during power-up.
8. ADSP LOW always initiates an internal READ at the L-H edge of CLK, a WRITE is performed by setting one or more byte write enable signals
and BWE LOW or GW LOW for the subsequent L-H edge of CLK. Refer to WRITE timing diagram for clarification.
3
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WED2DL36513V
White Electronic Designs
A BSOLUTE MAXIMUM RATINGS*
PARITAL TRUTH TABLE - WRITE COMMANDS
Function
Read
Read
Write Byte “a”
Write All Bytes
Write All Bytes
GW
H
H
H
H
L
BWE
H
L
L
L
X
BWa
X
H
L
L
X
BWb
X
H
H
L
X
BWc
X
H
H
L
X
Voltage on VDD Supply relative to VSS
Voltage on VDDQ Supply relative to VSS
VIN (DQx)
VIN (Inputs)
Storage Temperature (BGA)
Short Circuit Output Current
BWd
X
H
H
L
X
-0.5V to +4.6V
-0.5V to +4.6V
-0.5V to VDDQ +0.5V
-0.5V to VDD +0.5V
+55°C to +125°C
100 mA
*Stress greater than those listed under "Absolute Maximum Ratings"
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 greater than those indicated in the operational sections of
this specification is not implied. Exposure to absolute maximum rating
conditions for extended periods may affect reliability.
NOTE: Using BWE and BWa through BWd, any one or more bytes
may be written.
ELECTRICAL CHARACTERISTICS
Description
Min
Max
Units
Notes
Input High (Logic 1)Voltage
Symbol
VIH
Conditions
2.0
VDD +0.3
V
1
Input Low (Logic 0) Voltage
VIL
0.8
V
1
Input Leakage Current
ILI
-1.0
1.0
µA
2
Ouptut Leakage Current
ILO
£ VIN £ VDD
Output(s) disabled, 0V £ VIN £ VDD
-0.3
-1.0
1.0
µA
Output High Voltage
VOH
I OH = -4.0mA
2.4
—
V
1
Output Low Voltage
VOL
I OL = 8.0mA
—
0.4
V
1
1
0V
Supply Voltage
VDD
3.135
3.6
V
Isolated Output Buffer Supply
VDDQ
3.135
3.6
V
NOTES:
1. All voltages referenced to Vss (GND).
2. MODE has an internal pull-up, and input leakage is higher.
DC CHARACTERISTICS
Description
Symbol
Power Supply
Current: Operating
I DD
CMOS Standby
I SB2
TTL Standby
I SB3
Clock Running
I SB4
Conditions
200* 166
MHz MHz
150
MHz
133
Units Notes
MHz
TBD
700
620
560
mA
1,2,3
10
20
20
20
20
mA
2,3
20
40
40
40
40
mA
2,3
80
TBD
180
160
140
mA
2,3
Typ
£
Device selected; All inputs VIL or VIH; Cycle time tKC MIN;
VDD = MAX; Outputs open
Device deselected; VDD = MAX; All inputs VSS + 0.2
or VDD - 0.2; All inputs static; CLK frequency = 0
Device deselected; VDD = MAX; All inputs VIL or VIH;
All inputs static; CLD frequency = 0
Device deselected; VDD = MAX; All inputs VSS + 0.2
or VDD -0.2; Cycle time tKC MIN
£
£
£
* Advanced Information
NOTES:
1. IDD is specified with no output current and increases with faster cycle times. IDD increases with faster cycle times and greater output loading.
2. “Device deselected” means device is in power-down mode as defined in the truth table. “Device selected” means device is active (not in powerdown mode).
3. Typical values are measured at 3.3V, 25°C and 10ns cycle time.
BGA CAPACITANCE
Description
Conditions
Symbol
Typ
Max
Units
Notes
Control Input Capacitance
TA = 25°C; f = 1MHz
CI
3
4
pF
1
Input/Output Capacitance (DQ)
TA = 25°C; f = 1MHz
CO
4
5
pF
1
Address Capacitance
TA = 25°C; f = 1MHz
CA
3
5
pF
1
Clock Capacitance
TA = 25°C; f = 1MHz
CCK
2.5
4
pF
1
NOTE:
1. This parameter is sampled.
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WED2DL36513V
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AC CHARACTERISTICS (WED2DL36513V)
Symbol
Parameter
Clock
Clock Cycle Time
tKC
Clock Frequency
tKF
Clock HIGH Time
Clock LOW Time
tKH
tKL
200MHz
Min
Max
166MHz
Min
Max
150MHz
Min
Max
133MHz
Min
Max
5.0
6.0
6.6
7.5
200
2.0
2.0
166
ns
150
2.4
2.4
Units
133
2.6
2.6
MHz
2.6
2.6
ns
ns
Output Times
Clock to output valid
t KQ
Clock to output invalid (2)
tKQX
1.5
1.25
1.25
1.5
Clock to output on Low-Z (2,3,4)
tKQLZ
0
0
0
0
Clock to output in High-Z (2,3,4)
tKQHZ
OE to output valid (5)
tOEQ
OE to output in Low-Z (2,3,4)
tOELZ
OE to output in High Z (2,3,4)
tOEHZ
2.5
3.5
3.0
3.5
2.5
0
3.8
3.5
ns
3.8
0
3.5
ns
ns
3.8
0
2.5
4.0
4.0
ns
4.0
ns
4.0
ns
0
ns
3.8
Setup Times
Address (6,7)
tAS
1.5
1.5
1.5
1.5
ns
tADSS
tAAS
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
ns
ns
Write signals (BWa-BWd, BWE, GW) (6,7)
tWS
1.5
1.5
1.5
1.5
ns
Data-in (6,7)
tDS
1.5
1.5
1.5
1.5
ns
Chip enables (CE, CE2, CE2) (6,7)
tCES
1.5
1.5
1.5
1.5
ns
Address status (ADSC, ADSP) (6,7)
Address advance (ADV) (6,7)
Hold Times
Address (6,7)
tAH
0.5
0.5
0.5
0.5
ns
Address status (ADSC, ADSP) (6,7)
tADSH
0.5
0.5
0.5
0.5
ns
Address advance (ADV) (6,7)
tAAH
0.5
0.5
0.5
0.5
ns
Write Signals (BWa-BWd, BWE, GW) (6,7)
tWH
0.5
0.5
0.5
0.5
ns
Data-in (6,7)
tDH
0.5
0.5
0.5
0.5
ns
Chip Enables (CE, CE2, CE2) (6,7)
tCEH
0.5
0.5
0.5
0.5
ns
NOTES:
1. Test conditions as specified with the output loading as shown in Figure 1 for 3.3V I/0 and Figure 3 for 2.5V I/0 unless otherwise noted.
2. This parameter is measured with output load as shown in Figure 2 for 3.3V I/0 and Figure 4 for 2.5V I/0.
3. This parameter is sampled.
4. Transition is measured ±500mV from steady state voltage.
5. OE is a “Don’t Care” when a byte write enable is sampled LOW.
6. A WRITE cycle is defined by at least one byte write enable LOW and ADSP HIGH for the required setup and hold times. A READ cycle is
defined by all byte write enables HIGH and ADSC or ADV LOW or ADSP LOW for the required setup and hold times.
7. This is a synchronous device. All addresses must meet the specified setup and hold times for all rising edges of CLK when either ADSP or
ADSC is LOW and chip enabled. All other synchronous inputs must meet the setup and hold times with stable logic levels for all rising edges of
clock (CLK) when the chip is enabled. Chip enable must be valid at each rising edge of CLK when either ADSP or ADSC is LOW to remain enabled.
AC TEST CONDITIONS
OUTPUT LOADS
Output
Parameter
Z0
Z0==50Ω
50Ω
Input Pulse Levels
Input Rise and Fall Times
50Ω
Vt = 1.5V for 3.3V I/O
Vt = 1.25V for 2.5V I/O
3.3V I/O
2.5V I/O
VSS to 3.0
VSS to 2.5
Unit
V
1
1
ns
Input Timing Reference Levels
1.5
1.25
V
Output Timing Reference Levels
1.5
1.25
V
Output Load
See figure, at left
AC Output Load Equivalent
5
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WED2DL36513V
White Electronic Designs
SNOOZE MODE
SNOOZE MODE. When ZZ becomes a logic HIGH, ISB2Z
is guaranteed after the setup time tZZ is met. Any READ
or WRITE operation pending when the device enters
SNOOZE MODE is not guaranteed to complete successfully. Therefore, SNOOZE MODE must not be initiated until valid pending operations are completed.
SNOOZE MODE is a low-current, “power-down” mode
In which the device is deselected and current is reduced
to ISB2Z. The duration of SNOOZE MODE is dictated by
the length of time ZZ is in a HIGH state. After the device
enters SNOOZE MODE, all inputs except ZZ become
gated inputs and are ignored. ZZ is an asynchronous,
active HIGH input that causes the device to enter
SNOOZE MODE
Description
Current during SNOOZE MODE
ZZ active to input ignored
ZZ inactive to input sampled
ZZ active to snooze current
ZZ inactive to exit snooze current
Conditions
ZZ VIH
Symbol
I SB2Z
tZZ
tRZZ
tZZI
tRZZI
³
Min
Max
10
2(tKC)
2(tKC)
2(tKC)
Units
mA
ns
ns
ns
ns
FIG. 2 SNOOZE MODE TIMING DIAGRAM
CLOCK
t ZZ
t RZZ
ZZ
t ZZI
ISUPPLY
t RZZI
I ISB2Z
ALL INPUTS
(except ZZ)
Output (Q)
DESELECT or READ Only
HIGH-Z
DON'T CARE
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Notes
1
1
1
1
WED2DL36513V
White Electronic Designs
FIG. 3 READ TIMING DIAGRAM
t KH
t KL
CLOCK
t KC
t ADSH
t ADSS
ADSP
ADSC
t AS
t AH
A1
ADDRESS
A2
A3
(NOTE 3)
t WA
Burst continued with
new base address
BWx, GW
t WS
Deselect Cycle
(NOTE 4)
t CSS t CSH
CE
(NOTE 2)
t AAH
ADV
t AAS
ADV suspends burst
OE
t KQ
Q
HIGH-Z
t OEHZ
t OEQ
t KQ
Q(A1)
t KQHZ
t KQX
t OELZ
t KQLZ
Q(A2)
Q(A2+1)
Q(A2+2)
(NOTE 1)
SINGLE READ
BURST READ
Q(A2+3)
Q(A2)
Q(A2+1)
Burst wraps around
to its initial state
DON'T CARE
UNDEFINED
NOTES:
1. Q (A2) refers to output from address A2. Q (A2+1) refers to output from the next internal burst address following A2 .
2. CE2 and CE2 have timing identical to CE. On this diagram, when CE is LOW, CE2 is LOW and CE2 is HIGH. When CE is HIGH, CE2 is
HIGH and CE2 is LOW.
3. Timing is shown assuming that the device was not enabled before entering into this sequence. OE does not cause Q to be driven until
after the following clock rising edge.
4. Outputs are disabled within one clock cycle after deselect.
7
White Electronic Designs Corporation • (508) 366-5151 • www.whiteedc.com
WED2DL36513V
White Electronic Designs
FIG. 4 WRITE TIMING DIAGRAM
t KH
t KL
CLOCK
t KC
t ADSH
t ADSS
ADSP
ADSC extends burst
t ADSH
ADSC
t AS
A1
ADDRESS
t ADSS
(NOTE 5)
t AH
A2
A3
BYTE WRITE signals are ignored for
first cycle when ADSP initiates burst.
t WA
BWx
t WS
t WH
(NOTE 5)
(NOTE 3)
GW
t WS
t CSS
t CSH
CE
(NOTE 2)
t AAH
ADV
ADV suspends burst
t AAS
(NOTE 4)
OE
(NOTE 3)
t DS t DH
D
HIGH-Z
D(A1)
D(A2)
D(A2+1)
D(A2+1)
D(A2+2)
D(A2+3)
D(A3)
D(A3+1)
D(A3+2)
t OEHZ
(NOTE 1)
Q
BURST READ
SINGLE WRITE
BURST WRITE
Extended BURST WRITE
DON'T CARE
UNDEFINED
NOTES:
1. D (A2) refers to output from address A2 . D (A2+1) refers to output from the next internal burst address following A2 .
2. CE2 and CE 2 have timing identical to CE. On this diagram, when CE is LOW, CE2 is LOW and CE2 is HIGH. When CE is HIGH, CE2 is
HIGH and CE2 is LOW.
3. OE must be HIGH before the input data setup and held HIGH throughout the data hold time. This prevents input/output data content in
for the time period prior to the byte write enable inputs being sampled.
4. ADV must be HIGH to permit a WRITE to the load address.
5. Full-width WRITE can be initiated by GW LOW, or GW HIGH and BWE, BWa, - BWd LOW. Timing is shown assuming that the device
was not enabled before entering into its sequence. OE does not cause Q to be driven until after the following clock rising edge.
White Electronic Designs Corporation • Westborough MA • (508) 366-5151
8
WED2DL36513V
White Electronic Designs
FIG. 5 READ/WRITE TIMING DIAGRAM
t KH
t KL
CLOCK
t KC
t ADSH
t ADSS
ADSP
ADSC
t AS t AH
ADDRESS
A1
A2
A3
A4
A5
t WS t WH
(NOTE 4)
A6
(NOTE 3)
BWx
(NOTE 4)
t CSS t CSH
CE
(NOTE 2)
ADV
OE
t DS
HIGH-Z
D
t KQ
t KQLZ
Q
HIGH-Z
t DH
D(A3)
Q(A1)
Back-to-Back READs
(NOTE5)
t OEHZ
D(A5)
t OELZ
D(A6)
(NOTE 1)
Q(A4)
Q(A2)
SINGLE WRITE
Q(A4+1)
BURST READ
Q(A4+2)
Q(A4+3)
Back-to-Back
WRITEs
DON'T CARE
UNDEFINED
NOTES:
1. Q (A4) refers to output from address A4 . Q (A4+1) refers to output from the next internal burst address following A4 .
2. CE2 and CE 2 have timing identical to CE. On this diagram, when CE is LOW, CE2 is LOW and CE2 is HIGH. When CE is HIGH, CE2 is
HIGH and CE2 is LOW.
3. The data bus Q remains in High-Z following a WRITE cycle unless ADSP, ADSC or ADV cycle is performed.
4. GW is HIGH.
5. Back-to-back READs may be controlled by either ADSP or ADSC.
9
White Electronic Designs Corporation • (508) 366-5151 • www.whiteedc.com
WED2DL36513V
White Electronic Designs
PACKAGE DIMENSION: 119 BUMP PBGA
2.79 (0.110)
MAX
7.62 (0.300)
TYP
14.00 (0.551) TYP
R 1.52 (0.060)
MAX (4x)
7 6 5 4 3 2 1
A
B
A1
CORNER
C
D
E
F
1.27 (0.050)
TYP
G
H
20.32 (0.800)
TYP
22.00 (0.866)
TYP
J
K
L
M
N
P
R
T
U
0.711 (0.028)
MAX
1.27 (0.050) TYP
ALL LINEAR DIMENSIONS ARE MILLIMETERS AND PARENTHETICALLY IN INCHES
NOTE: Ball attach pad for above BGA package is 480 microns in diameter. Pad is solder mask defined.
ORDERING INFORMATION
512Kx36, Single CE
Part Number
Config.
tKQ
Clock Package
(ns)
(MHz)
No.
Commercial Temp Range (0°C to 70°C)
WED2DL36513V25BC
512Kx36
2.5
200
435
WED2DL36513V35BC
512Kx36
3.5
166
435
WED2DL36513V38BC
WED2DL36513V40BC
512Kx36
512Kx36
3.8
4.0
150
133
435
435
Industrial Temp Range (-40°C to +85°C)*
WED2DL36513V38BI
512Kx36
3.8
150
435
WED2DL36513V40BI
512Kx36
4.0
133
435
* Advanced Information
White Electronic Designs Corporation • Westborough MA • (508) 366-5151
10