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24AA64T-I/OT

64Kbit I2C Serial EEPROM, 1.7-5.5V, 400kHz, SOT-23-5

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Manufacturer Part：

24AA64T-I/OT

Package：

SOT-23-5 (2.9 x 1.6 x 1.1 mm)

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Description

Product Overview

The 24AA64T-I/OT is a 64Kbit I2C serial EEPROM manufactured by Microchip Technology. Organized as 8K x 8-bit memory, it operates from 1.7V to 5.5V with standby current of only 1uA. The device supports 400kHz clock frequency and features a 32-byte page write buffer with 1 million erase/write cycle endurance and over 200 years data retention.

Key Specifications

Memory Density 64Kbit (8K x 8)
Interface I2C (2-wire)
Max Clock Frequency 400kHz
Supply Voltage 1.7V to 5.5V
Page Size 32 bytes
Page Write Time 5ms typical
Endurance 1,000,000 erase/write cycles
Data Retention >200 years
Operating Temperature -40C to +85C
Package SOT-23-5

Features

  • Low-voltage operation down to 1.7V
  • 400kHz I2C compatible interface
  • 32-byte page write buffer
  • Hardware write-protect pin
  • Schmitt trigger inputs for noise suppression
  • Cascadable up to 8 devices on same bus
  • ESD protection >4000V
  • Self-timed erase/write cycle

Applications

  • Data acquisition and logging systems
  • Personal communications equipment
  • Industrial control parameter storage
  • Consumer electronics configuration data
  • IoT device settings storage

The 24AA64T-I/OT is a 64Kbit I2C compatible serial EEPROM from Microchip Technology, organized as 8K x 8-bit. It supports low-voltage operation down to 1.7V with ultra-low standby current of 1uA, making it ideal for battery-powered and low-power applications. The device features a 32-byte page write buffer, 400kHz clock compatibility, and Schmitt trigger inputs for enhanced noise immunity. With 1 million erase/write cycle endurance and over 200 years of data retention, it provides reliable non-volatile storage.

The 24AA64 communicates via the I2C protocol using SDA (data) and SCL (clock) lines. The device address is set by three address pins (A0, A1, A2), allowing up to 8 devices on the same bus. Write operations are initiated by sending the device address followed by the memory address and data bytes. The 32-byte page write buffer allows writing up to 32 bytes in a single operation. Read operations can be sequential (current address read) or random (random read with address specification). The hardware write-protect pin prevents accidental data modification.

Pin Name Type Function
1 A0 Input Address input 0
2 A1 Input Address input 1
3 A2 Input Address input 2
4 VSS Power Ground
5 SDA I/O Serial data line
6 SCL Input Serial clock line
7 WP Input Write protect (active high)
8 VCC Power Supply voltage (1.7-5.5V)
  • Industrial control parameter storage and calibration data
  • Consumer electronics configuration and user settings
  • IoT device firmware and network configuration storage
  • Medical device patient data logging
  • Automotive electronic module settings
Manufacturer Part Number Package Notes
Microchip 24LC64T-I/OT SOT-23-5 Wider voltage range (1.8-5.5V)
Microchip 24AA64-I/SN SOIC-8 SOIC package version
STMicroelectronics M24C64-WMN SOIC-8 64Kbit I2C EEPROM
onsemi CAT24C64 SOIC-8 64Kbit I2C EEPROM
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All electronic components we source from our partnered supply chains go through strict incoming inspections.Through careful testing, we ensure everything delivered to customers is genuine original parts and meets quality requirements.In addition, we keep complete inspection records to make the entire supply chain process clear and traceable.

Certification
We have obtained a number of professional certifications and built our own professional testing laboratory.This ensures that every product we deliver to our customers meets the highest quality requirements.We conduct tests in strict accordance with procedures to ensure stable product quality and accurate parameters.To guarantee genuine original parts, we also cooperate with reliable third-party testing institutions for strict quality inspection.We always attach great importance to quality and fully comply with industry standards, relevant regulations, and ISO 9001:2015 requirements.

Shipping & Payment

All electronic components we source from our partnered supply chains go through strict incoming inspections.Through careful testing, we ensure everything delivered to customers is genuine original parts and meets quality requirements.In addition, we keep complete inspection records to make the entire supply chain process clear and traceable.

Certification
We have obtained a number of professional certifications and built our own professional testing laboratory.This ensures that every product we deliver to our customers meets the highest quality requirements.We conduct tests in strict accordance with procedures to ensure stable product quality and accurate parameters.To guarantee genuine original parts, we also cooperate with reliable third-party testing institutions for strict quality inspection.We always attach great importance to quality and fully comply with industry standards, relevant regulations, and ISO 9001:2015 requirements.

Service & Packaging

All electronic components we source from our partnered supply chains go through strict incoming inspections.Through careful testing, we ensure everything delivered to customers is genuine original parts and meets quality requirements.In addition, we keep complete inspection records to make the entire supply chain process clear and traceable.

Certification
We have obtained a number of professional certifications and built our own professional testing laboratory.This ensures that every product we deliver to our customers meets the highest quality requirements.We conduct tests in strict accordance with procedures to ensure stable product quality and accurate parameters.To guarantee genuine original parts, we also cooperate with reliable third-party testing institutions for strict quality inspection.We always attach great importance to quality and fully comply with industry standards, relevant regulations, and ISO 9001:2015 requirements.

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