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DS1249AB Datasheet 2048k Nonvolatile Sram

Manufacturer: Maxim Integrated (now Analog Devices)

Overview: 19-5631; Rev 11/10 www.maxim-ic.com.

This datasheet includes multiple variants, all published together in a single manufacturer document.

General Description

A0 - A17 - Address Inputs DQ0 - DQ7 - Data In/Data Out CE - Chip Enable WE - Write Enable OE - Output Enable VCC GND - Power (+5V) - Ground NC - No Connect DESCRIPTION The DS1249 2048k Nonvolatile SRAMs are 2,097,152-bit, fully static, nonvolatile SRAMs organized as 262,144 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 protection is unconditionally enabled to prevent data corruption.

Key Features

  • 10 years minimum data retention in the absence of external power.
  • Data is automatically protected during power loss.
  • Unlimited write cycles.
  • Low-power CMOS operation.
  • Read and write access times of 70 ns.
  • Lithium energy source is electrically disconnected to retain freshness until power is applied for the first time.
  • Full ± 10% VCC operating range (DS1249Y).
  • Optional ± 5% VCC operating range (DS1249AB).
  • Optional industrial temperature range of -40°C.

Similar Datasheet

Brand Logo Part Number Description Manufacturer
Dallas Semiconducotr Logo DS1249W 3.3V 2048kb Nonvolatile SRAM Dallas Semiconducotr
Maxim Integrated Products Logo DS1249W 3.3V 2048kb Nonvolatile SRAM Maxim Integrated Products

More Datasheets from Maxim Integrated (now Analog Devices)

Part Number Description
DS1249Y 2048k Nonvolatile SRAM
DS1243Y 64K NV SRAM
DS1244 256K NV SRAM
DS1244P 256K NV SRAM
DS1245AB 1024k Nonvolatile SRAM
DS1245W 3.3V 1024k Nonvolatile SRAM
DS1245Y 1024k Nonvolatile SRAM
DS1248 1024K NV SRAM
DS1248P 1024K NV SRAM
DS1210 Nonvolatile Controller

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