STK12C68-5C25 ETC [List of Unclassifed Manufacturers], STK12C68-5C25 Datasheet - Page 4

• Manufacturer Part Number: STK12C68-5C25
• Manufacturer: ETC [List of Unclassifed Manufacturers]

STK12C68
October 2003
SRAM WRITE CYCLES #1 & #2
Note j:
Note k: E or W must be
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
DATA OUT
ADDRESS
DATA IN
DATA IN
t
If W is low when E goes low, the outputs remain in the high-impedance state.
HSB must be high during SRAM WRITE cycles.
WLQZ
t
t
t
t
t
t
t
t
t
WLWH
WHQX
DVWH
WHDX
AVWH
WHAX
ELWH
AVWL
AVAV
#1
W
E
W
E
i, j
SYMBOLS
t
t
t
t
t
t
t
t
WLEH
DVEH
EHDX
EHAX
ELEH
AVEH
AVEL
AVAV
#2
V
IH
t
AVWL
18
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
20
AVEH
PARAMETER
17
t
AVWH
17
t
WLWH
13
t
ELWH
k, l
14
k, l
t
AVAV
12
t
AVAV
12
HIGH IMPEDANCE
t
ELEH
4
14
t
WLEH
13
STK12C68-25
MIN
25
20
20
10
20
0
0
0
5
HIGH IMPEDANCE
t
DVWH
15
Document Control # ML0008 rev 0.4
t
DVEH
15
MAX
10
DATA VALID
DATA VALID
STK12C68-35
MIN
35
25
25
12
25
0
0
0
5
MAX
13
t
WHDX
t
16
WHAX
STK12C68-45
19
MIN
45
30
30
15
30
t
t
0
0
0
5
EHAX
EHDX
19
16
(V
t
WHQX
21
CC
MAX
14
= 5.0V
STK12C68-55
MIN
55
45
45
25
45
0
0
0
5
MAX
15
10%)
UNITS
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
e