STK14C88-CF25 SIMTEK [Simtek Corporation], STK14C88-CF25 Datasheet - Page 5

• Manufacturer Part Number: STK14C88-CF25
• Description: 32Kx8 AutoStore nvSRAM
• Manufacturer: SIMTEK [Simtek Corporation]

Document Control #ML0014 Rev 0.3
SRAM WRITE CYCLES #1 & #2
Note j:
Note k: E or W must be ≥ V
Note l:
SRAM WRITE CYCLE #1: W Controlled
SRAM WRITE CYCLE #2: E Controlled
NO.
12
13
14
15
16
17
18
19
20
21
ADDRESS
DATA OUT
ADDRESS
DATA OUT
DATA IN
DATA IN
February 2007
DATA IN
If W is low when E goes low, the outputs remain in the high-impedance state.
HSB must be high during SRAM WRITE cycles.
t
WLQZ
t
t
t
t
t
t
t
t
t
WLWH
DVWH
WHDX
WHQX
ELWH
AVWH
WHAX
AVWL
AVAV
#1
W
E
W
E
i, j
SYMBOLS
t
t
t
t
t
t
t
t
WLEH
DVEH
EHDX
AVEH
EHAX
AVAV
ELEH
AVEL
#2
t
AVWL
18
IH
during address transitions.
t
AVEL
18
PREVIOUS DATA
t
Alt.
t
t
t
t
t
t
t
t
t
WC
WP
CW
DW
AW
WR
WZ
OW
DH
AS
Write Cycle Time
Write Pulse Width
Chip Enable to End of Write
Data Set-up to End of Write
Data Hold after End of Write
Address Set-up to End of Write
Address Set-up to Start of Write
Address Hold after End of Write
Write Enable to Output Disable
Output Active after End of Write
t
WLQZ
t
AVEH
20
17
t
AVWH
17
t
PARAMETER
WLWH
t
13
ELWH
14
k, l
k, l
t
t
AVAV
ELEH
t
12
14
WLEH
5
t
13
AVAV
HIGH IMPEDANCE
12
HIGH IMPEDANCE
t
DVEH
t
15
DVWH
15
DATA VALID
DATA VALID
STK14C88-25
MIN
25
20
20
10
20
0
0
0
5
MAX
10
t
t
WHDX
WHAX
t
16
EHDX
STK14C88-35
19
t
MIN
16
EHAX
35
25
25
12
25
19
0
0
0
5
(V
t
WHQX
21
CC
MAX
13
= 5.0V ± 10%)
STK14C88-45
MIN
45
30
30
15
30
0
0
0
5
STK14C88
MAX
15
UNITS
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
e