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25C640

Status: Not Recommended for new designs

Features:

  • Low-power CMOS technology
  • 32 byte page
  • Self-timed erase and write cycles
  • Block write protection
  • Built-in write protection
  • Sequential read
  • High reliability
  • Temperature ranges supported: - Industrial (I): -40°C to +85°C - Automotive (E): -40°C to +125°C
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Overview
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Device Overview

Summary

The Microchip Technology Inc. 25AA640/25LC640 (25XX640*) is a 64 Kbit Serial Electrically Erasable PROM [EEPROM]. The memory is accessed via a simple Serial Peripheral Interface (SPI) compatible serial bus. The bus signals required are a clock input (SCK) plus separate data in (SI) and data out (SO) lines. Access to the device is controlled through a Chip Select (CS) input.

Please consider this device 25LC640A

Additional Features
  • Low-power CMOS technology
  • 32 byte page
  • Self-timed erase and write cycles
  • Block write protection
  • Built-in write protection
  • Sequential read
  • High reliability
  • Temperature ranges supported: - Industrial (I): -40°C to +85°C - Automotive (E): -40°C to +125°C
Parametrics
Name
Value
Density
64K bits (x8)
Op. Volt Range (V)
4.5 to 5.5
Max. Clock Freq.
3 MHz
Temp Range (°C)
-40°C to +125°C
Endurance
1,000,000

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Development Environment

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