stk16ca8 Simtek Corporation, stk16ca8 Datasheet - Page 4

• Manufacturer Part Number: stk16ca8
• Description: 128k Autostoreplus?? Nvsram Quantumtrap?? Cmos Nonvolatile Static
• Manufacturer: Simtek Corporation

STK16CA8
September 2003
SRAM WRITE CYCLES #1 & #2
Note i:
Note j:
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
DATA OUT
ADDRESS
DATA IN
DATA IN
DATA IN
t
If W is low when E goes low, the outputs remain in the high-impedance state.
E or W must be
WLQZ
t
t
t
t
t
t
t
t
t
WLWH
WHQX
DVWH
WHDX
AVWH
WHAX
ELWH
AVWL
AVAV
#1
W
E
W
E
h, i
SYMBOLS
t
t
t
t
t
t
t
t
WLEH
DVEH
EHDX
EHAX
ELEH
AVEH
AVEL
AVAV
#2
t
AVWL
V
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
j
j
t
t
AVAV
ELEH
t
12
WLEH
14
t
13
AVAV
HIGH IMPEDANCE
12
4
HIGH IMPEDANCE
t
DVEH
t
15
DVWH
15
Document Control # ML0023 rev 0.1
DATA VALID
DATA VALID
STK16CA8-25
MIN
25
20
20
10
20
0
0
0
3
MAX
10
(V
t
t
WHDX
WHAX
t
CC
16
EHDX
19
STK16CA8-35
t
16
EHAX
MIN
35
25
25
12
25
19
0
0
0
3
= 3.0V 20%, -10%)
t
WHQX
21
MAX
13
STK16CA8-45
MIN
45
30
30
15
30
0
0
0
3
MAX
15
UNITS
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns