gvt71256zb18 ETC-unknow, gvt71256zb18 Datasheet - Page 5

• Manufacturer Part Number: gvt71256zb18
• Description: 256k Flow-through Sram
• Manufacturer: ETC-unknow

PARTIAL TRUTH TABLE FOR READ/WRITE
Note:1
1.
2.
FUNCTIONAL TIMING DIAGRAM
Note:
1.
2.
July 23, 1998
Rev. 7/98
Read
No Write
Write Byte a (DQa, DQPa)
Write Byte b (DQb, DQPb)
Write all bytes
FUNCTION
GALVANTECH
(SA0, SA1, SA)
(R/W#, BWx#,
CONTROL
L means logic LOW. H means logic HIGH. X means “Don’t Care.”
Multiple bytes may be selected during the same cycle.
ADDRESS
This assumes that CKE#, CE#, CE2 and CE2# are all True.
All addresses, control and data-in are only required to meet set-up and hold time with respect to the rising edge of clock.
Data out is valid after a clock-to-data delay from the rising edge of clock.
ADV/LD#)
DQP[a:b]
DQ[a:b]
DATA
CLOCK
CYCLE
n+19
DQ
C
A
19
19
18
2
2
n+20
DQ
A
C
20
20
19
, INC.
n+21
DQ
A
C
R/W#
21
21
H
L
L
L
L
20
1
BWa#
n+22
DQ
C
A
256K X 18 FLOW-THROUGH ZBL SRAM
H
H
X
L
L
22
22
21
5
BWb#
n+23
DQ
X
H
H
L
L
C
A
23
23
22
n+24
DQ
A
C
Galvantech, Inc. reserves the right to change products or specifications without notice.
24
24
23
n+25
DQ
A
C
25
25
24
GVT71256ZB18
n+26
DQ
C
A
26
26
25
n+27
DQ
C
A
27
27
26