Cypress Semiconductor STK14C88-3 Specification Sheet

Features
■ 35 ns and 45 ns access times
■ Automatic nonvolatile STORE on power loss
■
Nonvolatile STORE under Hardware or Software control
■ Automatic RECALL to SRAM on power up
■ Unlimited Read/Write endurance
■ Unlimited RECALL cycles
■ 1,000,000 STORE cycles
■ 100 year data retention
■
Single 3.3V+0.3V power supply
■
Commercial and Industrial Temperatures
■ 32-pin (300mil) SOIC and 32-pin (600 mil) PDIP packages
■ RoHS compliance
Logic Block Diagram
A
5
A
6
A
7
A
8
A
9
A
11
A
12
A
13
A
14
DQ
0
DQ
1
DQ
2
DQ
3
DQ
4
DQ
5
DQ
6
DQ
7
Cypress Semiconductor Corporation
Document Number: 001-50592 Rev. **
256 Kbit (32K x 8) AutoStore nvSRAM

Functional Description

The Cypress STK14C88-3 is a 256 Kb fast static RAM with
a nonvolatile element in each memory cell. The embedded
nonvolatile
technology producing the world's most reliable nonvolatile
memory. The SRAM provides unlimited read and write
cycles, while independent, nonvolatile data resides in the
highly reliable QuantumTrap cell. Data transfers from the
SRAM to the nonvolatile elements (the STORE operation)
takes place automatically at power down. On power up, data
is restored to the SRAM (the RECALL operation) from the
nonvolatile memory. Both the STORE and RECALL opera-
tions are also available under software control.
Quantum Trap
512 X 512
STORE
RECALL
STATIC RAM
ARRAY
512 X 512
COLUMN I/O
COLUMN DEC
A A A A A
A
0 1 2 3 4 10
• 198 Champion Court
elements incorporate
V V
CC CAP
POWER
CONTROL
STORE/
RECALL
CONTROL
SOFTWARE
DETECT
,
• San Jose CA 95134-1709
STK14C88-3
™
QuantumTrap
HSB
-
A A
13
0
OE
CE
WE
• 408-943-2600
Revised January 29, 2009
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