STK14D88
32Kx8 AutoStore™ nvSRAM
Cypress Semiconductor Corporation
•
198 Champion Court
•
San Jose
, CA 95134-1709
•
408-943-2600
Document Number: 001-52037 Rev. **
Revised March 02, 2009
Features
■ 25, 35, 45 ns Read Access and R/W Cycle Time
■ Unlimited Read/Write Endurance
■ Automatic Nonvolatile STORE on Power Loss
■ Nonvolatile STORE Under Hardware or Software Control
■ Automatic RECALL to SRAM on Power Up
■ Unlimited RECALL Cycles
■ 200K STORE Cycles
■ 20-Year Nonvolatile Data Retention
■ Single 3.0V +20%, -10% Power Supply
■ Commercial, Industrial Temperatures
■ Small Footprint SOIC and SSOP Packages (RoHS-Compliant)
Description
The Cypress STK14D88 is a 256Kb fast static RAM with a
nonvolatile Quantum Trap™ storage element included with each
memory cell.
The SRAM provides fast access and cycle times, ease of use,
and unlimited read and write endurance of a normal SRAM.
Data transfers automatically to the nonvolatile storage cells
when power loss is detected (the STORE operation). On power
up, data is automatically restored to the SRAM (the RECALL
operation). Both STORE and RECALL operations are also
available under software control.
The Cypress nvSRAM is the first monolithic nonvolatile memory
to offer unlimited writes and reads. It is the highest performance,
most reliable nonvolatile memory available.
A0 A1 A2 A3 A4 A10
COLUMN I/O
COLUMN DEC
STATIC RAM
ARRAY
512 x 512
Quantum Trap
512 x 512
STORE/
RECALL
CONTROL
STORE
RECALL
POWER
CONTROL
A5
A6
A7
A8
A9
A11
A12
A13
A14
DQ0
DQ1
DQ2
DQ3
DQ4
DQ5
DQ6
DQ7
SOFTWARE
DETECT
G
E
W
HSB
VCCX
VCAP
A0 - A13
Logic Block Diagram
[+] Feedback
Portuguese ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
