STK25C48-W25 Cypress Semiconductor Corp, STK25C48-W25 Datasheet - Page 4

• Manufacturer Part Number: STK25C48-W25
• Manufacturer: Cypress Semiconductor Corp
• Type: NVSRAMr

Specifications of STK25C48-W25

• Word Size: 8b
• Organization: 2Kx8
• Density: 16Kb
• Interface Type: Parallel
• Access Time (max): 25ns
• Operating Supply Voltage (typ): 5V
• Package Type: PDIP
• Operating Temperature Classification: Commercial
• Operating Supply Voltage (max): 5.5V
• Operating Supply Voltage (min): 4.5V
• Operating Temp Range: 0C to 70C
• Pin Count: 24
• Mounting: Through Hole
• Supply Current: 85mA
• Lead Free Status / RoHS Status: Not Compliant

March 2006
STK25C48
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
ADDRESS
DATA OUT
DATA IN
t
DATA IN
WLQZ
t
t
t
t
t
t
t
t
t
WLWH
DVWH
WHDX
WHAX
WHQX
ELWH
AVWH
AVWL
If W is low when E goes low, the outputs remain in the high-impedance state.
E or W must be ≥ V
AVAV
#1
W
E
W
h, i
E
SYMBOLS
t
t
t
t
t
t
t
t
WLEH
DVEH
EHDX
AVEH
EHAX
ELEH
AVEL
AVAV
#2
IH
t
AVWL
t
18
AVEL
during address transitions.
18
t
t
t
t
t
t
t
t
Alt.
t
t
WC
WP
CW
DW
WR
OW
DH
AW
WZ
AS
PREVIOUS DATA
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
20
t
AVEH
1 7
t
AVWH
17
PARAMETER
t
WLWH
13
t
ELWH
j
14
j
t
AVAV
t
12
AVAV
12
HIGH IMPEDANCE
t
ELEH
14
t
WLEH
13
HIGH IMPEDANCE
4Document Control # ML0005 rev 0.2
t
DVWH
15
t
DVEH
15
DATA VALID
DATA VALID
STK25C48-25
MIN
25
20
20
10
20
0
0
0
5
MAX
10
t
STK25C48-35
WHDX
t
WHAX
MIN
16
35
25
25
12
25
19
0
0
0
5
t
EHDX
t
EHAX
16
19
(V
t
WHQX
MAX
21
13
CC
= 5.0V
STK25C48-45
MIN
45
30
30
15
30
0
0
0
5
MAX
15
±
10%)
UNITS
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns