STK14C88-NF25 Cypress Semiconductor Corp, STK14C88-NF25 Datasheet - Page 8

• Manufacturer Part Number: STK14C88-NF25
• Description: IC NVSRAM 256KBIT 25NS 32SOIC
• Manufacturer: Cypress Semiconductor Corp

Specifications of STK14C88-NF25

• Format - Memory: RAM
• Memory Type: NVSRAM (Non-Volatile SRAM)
• Memory Size: 256K (32K x 8)
• Speed: 25ns
• Interface: Parallel
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 32-SOIC (7.5mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Hardware Mode Selection
Hardware STORE Cycle
Document Number: 001-52038 Rev. *B
Notes
12. HSB STORE operation occurs only if an SRAM write is done since the last nonvolatile cycle. After the STORE (if any) completes, the part goes into standby mode,
13. E and G low, W high for output behavior.
14. t
No.
22
23
24
25
26
H
E
X
inhibiting all operations until HSB rises
L
L
RECOVER
Standard
t
RECOVER
DQ (DATA OUT)
is only applicable after t
t
t
STORE
t
DELAY
t
W
H
X
L
X
HLHX
HLBL
HSB (OUT)
HSB (IN)
Symbols
HSB
H
H
H
L
Alternate
t
t
t
HHQX
HLQZ
HLHZ
STORE
HIGH IMPEDANCE
A
13
is complete.
- A
STORE Cycle Duration
Time Allowed to Complete SRAM Cycle
Hardware STORE High to Inhibit Off
Hardware STORE Pulse Width
Hardware STORE Low to STORE Busy
X
X
X
X
0
DATA VALID
(hex)
t
HLHX
25
t
HLBL
27
t
DELAY
Figure 8. Hardware STORE Cycle
23
Nonvolatile STORE
Not Selected
Read SRAM
Write SRAM
Parameter
Mode
t
STORE
22
Output High Z
Output High Z
Output Data
t
RECOVER
Input Data
24
I/O
Min
STK14C88
15
1
HIGH IMPEDANCE
Standby
Power
DATA VALID
Active
Active
Max
700
300
l
10
CC 2
STK14C88
Units Notes
ms
μs
ns
ns
ns
Page 8 of 19
Notes
13, 14
19
12
13
13
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