STK14CA8-NF25 Cypress Semiconductor Corp, STK14CA8-NF25 Datasheet - Page 7

• Manufacturer Part Number: STK14CA8-NF25
• Description: IC NVSRAM 1MBIT 25NS 32SOIC
• Manufacturer: Cypress Semiconductor Corp

Specifications of STK14CA8-NF25

• Format - Memory: RAM
• Memory Type: NVSRAM (Non-Volatile SRAM)
• Memory Size: 1M (128K x 8)
• Speed: 25ns
• Interface: Parallel
• Voltage - Supply: 2.7 V ~ 3.6 V
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 32-SOIC (7.5mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

SRAM WRITE Cycles #1 and #2
Document Number: 001-51592 Rev. *A
Notes
7. If W is low when E goes low, the outputs remain in the high impedance state.
8.
NO.
12
13
14
15
16
17
18
19
20
21
E or W must be ≥ V
ADDRESS
t
t
t
t
t
t
t
t
t
t
DATA OUT
AVAV
WLWH
ELWH
DVWH
WHDX
AVWH
AVWL
WHAX
WLQZ
WHQX
DATA IN
DATA IN
ADDRESS
DATA OUT
#1
DATA IN
W
[5,7]
E
IH
W
E
Symbols
during address transitions.
t
t
t
t
t
t
t
t
AVAV
WLEH
ELEH
DVEH
EHDX
AVEH
AVEL
EHAX
#2
t
AVWL
18
t
AVEL
18
t
Alt.
t
t
t
t
t
t
t
t
t
PREVIOUS DATA
OW
WC
WP
CW
DW
AW
WR
WZ
DH
AS
Write Cycle Time
Write Pulse Width
Chip Enable to End of Write
Data Setup to End of Write
Data Hold after End of Write
Address Setup to End of Write
Address Setup to Start of Write
Address Hold after End of Write
Write Enable to Output Disable
Output Active after End of Write
Figure 8. SRAM WRITE Cycle #1: W Controlled
Figure 9. SRAM WRITE Cycle #2: E Controlled
t
WLQZ
20
t
AVEH
17
t
AVWH
Parameter
17
t
WLWH
t
13
ELWH
14
t
AVAV
12
t
ELEH
t
WLEH
14
t
13
AVAV
HIGH IMPEDANCE
12
HIGH IMPEDANCE
t
t
DVWH
DVEH
15
15
DATA VALID
STK14CA8-25 STK14CA8-35 STK14CA8-45
DATA VALID
Min
25
20
20
10
20
0
0
0
3
Max
10
t
t
WHDX
WHAX
19
16
t
EHDX
[7,8]
t
16
[7,8]
EHAX
19
Min
t
35
25
25
12
25
WHQX
0
0
0
3
21
Max
13
Min
45
30
30
15
30
0
3
0
0
STK14CA8
Max
15
Page 7 of 17
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
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