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93C66A Specifications

Detailed technical information and Application Scenarios

Product Details

PartNumberManufactorQuantityAvailability
93C66AATMEL636Yes

93C66A** is a serial Electrically Erasable Programmable Read-Only Memory (EEPROM) manufactured by **Atmel** (now part of Microchip Technology).

The 93C66A is a serial Electrically Erasable Programmable Read-Only Memory (EEPROM) manufactured by Atmel (now part of Microchip Technology). Below are its key specifications, descriptions, and features:

Specifications:

  • Memory Size: 4Kbit (512 x 8-bit or 256 x 16-bit organization)
  • Interface: Microwire-compatible serial interface
  • Supply Voltage: 2.5V to 5.5V
  • Operating Temperature Range: -40°C to +85°C
  • Write Cycle Time: 3ms (typical)
  • Endurance: 1,000,000 write cycles
  • Data Retention: 100 years
  • Package Options: 8-pin PDIP, SOIC, TSSOP

Descriptions:

  • The 93C66A is a low-power, high-reliability EEPROM designed for serial data storage.
  • It supports both 8-bit and 16-bit word configurations via the ORG pin.
  • Features a sequential read operation for faster data access.
  • Includes built-in write protection via software control.

Features:

  • Serial Microwire Interface for easy integration with microcontrollers.
  • Low Power Consumption:
  • Active current: 3mA (max)
  • Standby current: 150μA (max)
  • Self-Timed Write Cycle with auto-erase before programming.
  • Software-Controlled Write Protection (via WP pin).
  • Industrial-Grade Reliability with extended temperature support.

This EEPROM is commonly used in automotive, industrial, and consumer electronics for parameter storage, calibration data, and configuration settings.

(Note: Atmel was acquired by Microchip Technology, but the original part number remains in use.)

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