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DS1645AB - Partitionable 1024K NV SRAM

Download the DS1645AB datasheet PDF. This datasheet also covers the DS1645Y variant, as both devices belong to the same partitionable 1024k nv sram family and are provided as variant models within a single manufacturer datasheet.

Key Features

  • 10 years minimum data retention in the absence of external power.
  • Data is automatically protected during power loss.
  • Directly replaces 128K x 8 volatile static RAM.
  • Write protects selected blocks of memory when pro- grammed.
  • Unlimited write cycles.
  • Low.
  • power CMOS.
  • Read and write access times as fast as 70 ns.
  • Lithium energy source is electrically disconnected to retain freshness until power is applied for the first.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (DS1645Y-DallasSemiconducotr.pdf) that lists specifications for multiple related part numbers.

Datasheet Details

Part number DS1645AB
Manufacturer Dallas Semiconducotr
File Size 102.17 KB
Description Partitionable 1024K NV SRAM
Datasheet download datasheet DS1645AB Datasheet

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Other Datasheets by Dallas Semiconducotr

Part Number Description
DS1645Y Partitionable 1024K NV SRAM
DS1640 Personal Computer Power FET
DS1640C Personal Computer Power FET
DS1644LPM Nonvolatile Timekeeping RAM
DS1610 Partitioned NV Controller

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
DS1645Y/AB DS1645Y/AB Partitionable 1024K NV SRAM FEATURES • 10 years minimum data retention in the absence of external power • Data is automatically protected during power loss • Directly replaces 128K x 8 volatile static RAM • Write protects selected blocks of memory when pro- grammed • Unlimited write cycles • Low–power CMOS • Read and write access times as fast as 70 ns • Lithium energy source is electrically disconnected to retain freshness until power is applied for the first time • Full +10% VCC operating range (DS1645Y) • Optional +5% VCC operating range (DS1645AB) • Optional industrial temperature range of –40°C to +85°C, designated IND • JEDEC standard 32–pin DIP package • Low Profile Module (LPM) package – Fits into standard 68–pin PLCC surface mountable socket – 250 mil packag