STK11C88-W20 datasheet, PDF - EEWORLD Datasheet

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STK11C88-W20: Description32K x 8 nvSRAM QUANTUM TRAP CMOS NONVOLATILE STATIC RAM; File Size84KB，9 Pages; ManufacturerETC

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STK11C88-W20 Overview

32K x 8 nvSRAM QUANTUM TRAP CMOS NONVOLATILE STATIC RAM

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STK11C88

32K x 8 nvSRAM

QuantumTrap™

CMOS

Nonvolatile Static RAM

FEATURES

• 20ns, 25ns, 35ns and 45ns Access Times

•

STORE

to EEPROM Initiated by Software

•

RECALL

to SRAM Initiated by Software or

Power Restore

• 10mA Typical I

at 200ns Cycle Time

• Unlimited READ, WRITE and

RECALL

Cycles

• 1,000,000

STORE

Cycles to EEPROM

• 100-Year Data Retention in EEPROM

• Commercial and Industrial Temperatures

• 28-Pin PDIP and SOIC Packages

DESCRIPTION

The Simtek STK11C88 is a fast static

RAM

with a

nonvolatile, electrically erasable

PROM

element

incorporated in each static memory cell. The

SRAM

can be read and written an unlimited number of

times, while independent nonvolatile data resides in

EEPROM

. Data transfers from the

SRAM

to the

EEPROM

(the

STORE

operation), or from

EEPROM

SRAM

(the

RECALL

operation), take place using a

software sequence. Transfers from the

EEPROM

the

SRAM

(the

RECALL

operation) also take place

automatically on restoration of power.

The STK11C88 is pin-compatible with industry-

standard

SRAM

BLOCK DIAGRAM

EEPROM ARRAY

512 x 512

PIN CONFIGURATIONS

STORE

STATIC RAM

ARRAY

512 x 512

RECALL

STORE/

RECALL

CONTROL

SOFTWARE

DETECT

INPUT BUFFERS

COLUMN I/O

COLUMN DEC

- A

ROW DECODER

28 - 300 PDIP

28 - 600 PDIP

28 - 300 SOIC

28 - 350 SOIC

PIN NAMES

- A

Address Inputs

Write Enable

Data In/Out

Chip Enable

Output Enable

Power (+5V)

Ground

- DQ

July 1999

5-1

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