STK15C88-S35I Cypress Semiconductor Corp, STK15C88-S35I Datasheet - Page 4

• Manufacturer Part Number: STK15C88-S35I
• Manufacturer: Cypress Semiconductor Corp
• Type: NVSRAMr

Specifications of STK15C88-S35I

• Word Size: 8b
• Organization: 32Kx8
• Density: 256Kb
• Interface Type: Parallel
• Access Time (max): 35ns
• Operating Supply Voltage (typ): 5V
• Package Type: SOIC
• Operating Temperature Classification: Industrial
• Operating Supply Voltage (max): 5.5V
• Operating Supply Voltage (min): 4.5V
• Operating Temp Range: -40C to 85C
• Pin Count: 28
• Mounting: Surface Mount
• Supply Current: 80mA
• Lead Free Status / Rohs Status: Not Compliant

STK15C88
August 1998
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
DATA IN
t
WLQZ
t
t
t
t
t
t
t
t
If W is low when E goes low the outputs remain in the high impedance state.
E or W must be
t
WLWH
DVWH
WHDX
WHQX
ELWH
AVWH
WHAX
AVWL
AVAV
#1
W
E
W
h, i
E
SYMBOLS
t
t
t
t
t
t
t
t
WLEH
ELEH
DVEH
EHDX
AVEH
EHAX
AVAV
AVEL
#2
V
IH
t
AVWL
t
18
during address transitions.
18
AVEL
Alt.
t
t
t
t
t
t
t
t
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
t
20
AVEH
17
t
AVWH
17
PARAMETER
t
WLWH
13
t
ELWH
14
t
t
AVAV
AVAV
5-38
12
12
t
HIGH IMPEDENCE
ELEH
14
t
WLEH
j
13
j
HIGH IMPEDENCE
t
DVWH
15
t
DVEH
15
DATA VALID
DATA VALID
STK15C88-25
MIN
25
20
20
10
20
0
0
0
5
MAX
10
STK15C88-35
t
WHDX
MIN
t
WHAX
35
25
25
12
25
16
19
0
0
0
5
t
t
EHDX
19
EHAX
16
t
MAX
WHQX
(V
13
21
cc
STK15C88-45
= 5.0V
MIN
45
30
30
15
30
0
0
0
5
MAX
15
10%)
UNITS
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns