DS1321 - Flexible Nonvolatile Controller

Product Overview

Maxim Integrated

Datasheet Details

Part number	DS1321
Manufacturer	Maxim Integrated
File Size	528.18 KB
Description	Flexible Nonvolatile Controller
Datasheet	DS1321 Datasheet
Additional preview pages of the DS1321 datasheet.

Product details

Description

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 - Mode Input GND - Ground NC - No Connection VCCO VBAT TOL CEI1 CEI2 NC A/CEI3 B/CEI4 NC GND 1 2 3 4 5 6 7 8 9 10 20 VCCI 19 RST 18 BW 17 CEO1 16 CEO2 15 NC 14 CEO3 13 CEO4 12 NC 11 MODE DS1321E 20-

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 SRAMs each - Mode 2: 1 bank with 4 SRAMs each.
Monitors voltage of a lithium cell and provides advanced warning of impending battery failure.
Signals low-battery condition on active low Batte.

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Other Datasheets by Maxim Integrated

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Published: Mar 27, 2020 |