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STK12C68-WF25I bảng dữ liệu(PDF) 1 Page - Cypress Semiconductor

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nhà sản xuất  CYPRESS [Cypress Semiconductor]
Trang chủ  http://www.cypress.com
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STK12C68
64 Kbit (8K x 8) AutoStore nvSRAM
Cypress Semiconductor Corporation
198 Champion Court
San Jose
, CA 95134-1709
408-943-2600
Document Number: 001-51027 Rev. **
Revised January 30, 2009
Features
25 ns, 35 ns, and 45 ns access times
Hands off automatic STORE on power down with external 68
µF capacitor
STORE to QuantumTrap™ nonvolatile elements is initiated by
software, hardware, or AutoStore™ on power down
RECALL to SRAM initiated by software or power up
Unlimited Read, Write, and Recall cycles
1,000,000 STORE cycles to QuantumTrap
100 year data retention to QuantumTrap
Single 5V+10% operation
Commercial and industrial temperatures
228-pin (330mil) SOIC, 28-pin (300mil) PDIP, 28-pin (600mil)
PDIP packages
28-pin (300 mil) CDIP and 28-pad (350 mil) LCC packages
RoHS compliance
Functional Description
The Cypress STK12C68 is a fast static RAM with a nonvolatile
element in each memory cell. The embedded nonvolatile
elements incorporate QuantumTrap 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
operations are also available under software control. A hardware
STORE is initiated with the HSB pin.
STORE/
RECALL
CONTROL
POWER
CONTROL
SOFTWARE
DETECT
STATIC RAM
ARRAY
128 X 512
Quantum Trap
128 X 512
STORE
RECALL
COLUMN I/O
COLUMN DEC
OE
CE
WE
HSB
VCC
VCAP
A0
- A12
A0 A1 A2 A3 A4 A10
A5
A6
A7
A8
A9
A11
A12
DQ0
DQ1
DQ2
DQ3
DQ4
DQ5
DQ6
DQ7
Logic Block Diagram
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