STK14CA8 Simtek, STK14CA8 Datasheet - Page 6

• Manufacturer Part Number: STK14CA8
• Description: 128Kx8 Autostore nvSRAM
• Manufacturer: Simtek

STK14CA8
Document Control #ML0022 Rev 1.5
SRAM WRITE CYCLES #1 & #2
Note g: If W is low when E goes low, the outputs remain in the high-impedance state.
Note h: E or W must be ≥ V
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
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, g
E
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
PARAMETER
AVWH
17
t
WLWH
t
13
ELWH
14
g,h
g,h
t
t
AVAV
ELEH
t
12
14
WLEH
6
t
13
AVAV
HIGH IMPEDANCE
12
HIGH IMPEDANCE
t
DVEH
t
15
DVWH
15
STK14CA8-25
MIN
25
20
20
10
20
DATA VALID
0
0
0
3
DATA VALID
MAX
10
STK14CA8-35
MIN
35
25
25
12
25
0
0
0
3
t
t
WHDX
WHAX
t
16
EHDX
19
t
16
EHAX
19
MAX
13
t
WHQX
21
STK14CA8-45
MIN
45
30
30
15
30
0
0
0
3
MAX
15
UNITS
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns