DS1345AB Datasheet 1024k Nonvolatile SRAM

Manufacturer: Maxim Integrated (now Analog Devices)

DS1345AB 1024k nonvolatile sram by Maxim Integrated (now Analog Devices) - Datasheet Preview

Datasheet Details

Part number	DS1345AB
Manufacturer	Maxim Integrated (now Analog Devices)
File Size	202.13 KB
Description	1024k Nonvolatile SRAM
Download	DS1345AB Download (PDF)

General Description

A0 – A16 - Address Inputs DQ0 – DQ7 - Data In/Data Out CE - Chip Enable WE - Write Enable OE - Output Enable RST - Reset Output BW - Battery Warning Output VCC GND - Power (+5V) - Ground NC - No Connect DESCRIPTION The DS1345 1024k NV SRAMs are 1,048,576-bit, fully static, NV SRAMs organized as 131,072 words by 8 bits.

Each NV SRAM has a self-contained lithium energy source and control circuitry which constantly monitors VCC for an out-of-tolerance condition.

When such a condition occurs, the lithium energy source is automatically switched on and write

Overview

19-5589; Rev 10/10 www.maxim-ic.com.

Key Features

10 years minimum data retention in the absence of external power.
Data is automatically protected during power loss.
Power supply monitor resets processor when VCC power loss occurs and holds processor in reset during VCC ramp-up.
Battery monitor checks remaining capacity daily.
Read and write access times of 70ns.
Unlimited write cycle endurance.
Typical standby current 50µA.
Upgrade for 128k x 8 SRAM, EEPROM or Flash.
Lithium battery is electricall.

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