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DS1321 Datasheet - Maxim Integrated

DS1321-MaximIntegrated.pdf

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Datasheet Details

Part number:

DS1321

Manufacturer:

Maxim Integrated ↗

File Size:

528.18 KB

Description:

Flexible nonvolatile controller.

DS1321, Flexible Nonvolatile Controller

VCCI VCCO VBAT A, B - +5V Power Supply Input - SRAM Power Supply Output - Backup Battery Input - Address Inputs CEI1 - CEI4 - Chip Enable Inputs CEO1 - CEO4 - Chip Enable Outputs TOL - VCC Tolerance Select BW - Battery Warning Output (Open Drain) RST - Reset Output (Open Drain) MODE - Mod

DS1321 Features

* Converts CMOS SRAM into nonvolatile memory

* Unconditionally write-protects SRAM when VCC is out of tolerance

* Automatically switches to battery backup supply when VCC power failure occurs

* Flexible memory organization - Mode 0: 4 banks with 1 SRAM each - Mode 1: 2 banks with 2 S

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