STK1743-D45I datasheet, PDF - EEWORLD Datasheet

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STK1743-D45I: DescriptionNV TIME 8K X 8 AUTOSTORE NVSRAM WITH REAL - TIME CLOCK; File Size83KB，10 Pages; ManufacturerETC

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STK1743-D45I Overview

NV TIME 8K X 8 AUTOSTORE NVSRAM WITH REAL - TIME CLOCK

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STK1743

nvTime

™

8K x 8

AutoStore

™ nvSRAM

with Real-Time Clock

ADVANCE

FEATURES

• Data Integrity of Simtek nvSRAM Combined

with Full-Featured Real-Time Clock

• Stand-Alone Nonvolatile Memory and Time-

Keeping Solution—No Other Parts Required

• No Batteries to Fail

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

• Software- and

AutoStore

™-Controlled

Nonvolatile Cycles

• Year 2000 Compliant with Leap Year

Compensation

• 24-Hour BCD Format

• 100-Year Data Retention over Full Industrial

Temperature Range

• Full 30-Day RTC Operation on Each Power

Loss

• Single 5V

10% Power Supply

DESCRIPTION

The Simtek STK1743

DIP

module houses 64Kb of

nonvolatile static

RAM

, a real-time clock (

RTC

) with

crystal and a high-value capacitor to support sys-

tems that require high reliability and ease of manu-

facturing.

READ

and

WRITE

access to all

RTC

functions and the memory is the same as a conven-

tional x 8

SRAM

. The highest eight addresses of the

RAM

support clock registers for centuries, years,

months, dates, days, hours, minutes and seconds.

Independent data resides in the integral

EEPROM

all times. Automatic

RECALL

on power up transfers

the

EEPROM

data to the

SRAM

, while an automatic

STORE

on power down transfers

SRAM

data to the

EEPROM

. A software

RECALL

and

STORE

are also

possible on user command.

nvTime

™ allows unlim-

ited accesses to

SRAM

, unlimited

RECALL

s and 10

STORE

BLOCK DIAGRAM

EEPROM ARRAY

128 x 512

ROW DECODER

STORE/

RECALL

CONTROL

PIN CONFIGURATIONS

STORE

STATIC RAM

ARRAY

128 x 512

RECALL

POWER

CONTROL

SOFTWARE

DETECT

- A

600 mil

Dual

In-Line

Module

INPUT BUFFERS

COLUMN I/O

COLUMN DEC

RTC

PIN NAMES

- A

Address Inputs

Write Enable

Data In/Out

Chip Enable

Output Enable

Power (+ 5V)

Ground

MUX

- DQ

March 1999

7-1

STK1743-D45I Related Products

	STK1743-D45I	STK1743	STK1743-D25	STK1743-D25I	STK1743-D35	STK1743-D35I	STK1743-D45
Description	NV TIME 8K X 8 AUTOSTORE NVSRAM WITH REAL - TIME CLOCK	NV TIME 8K X 8 AUTOSTORE NVSRAM WITH REAL - TIME CLOCK	NV TIME 8K X 8 AUTOSTORE NVSRAM WITH REAL - TIME CLOCK	NV TIME 8K X 8 AUTOSTORE NVSRAM WITH REAL - TIME CLOCK	NV TIME 8K X 8 AUTOSTORE NVSRAM WITH REAL - TIME CLOCK	NV TIME 8K X 8 AUTOSTORE NVSRAM WITH REAL - TIME CLOCK	NV TIME 8K X 8 AUTOSTORE NVSRAM WITH REAL - TIME CLOCK

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