Microchip 24LC32A-I/SN 32Kbit I²C Serial EEPROM SOIC-8

The Microchip 24LC32A-I/SN 32Kbit I²C Serial EEPROM is an electrically erasable programmable read-only memory device in an 8-pin SOIC surface-mount package. It provides 32 Kbit of non-volatile storage, organised as 4K x 8 bits, and is accessed through a 2-wire serial interface that is fully I²C compatible.

Overview

Built with low-power CMOS technology, this device has a low-voltage architecture that allows operation down to 1.7V. Standby and active currents are 1µA and 1mA respectively, making it suitable for energy-sensitive and battery-powered applications such as data acquisition systems. The serial interface supports operation at up to 400kHz.

Key Features

• 32-byte page write buffer for efficient programming of multiple bytes, with a maximum page write time of 5 ms
• Cascading support, allowing up to eight units on the same bus and a total addressable memory space of up to 256 Kbits
• Schmitt-trigger inputs for noise suppression
• Output slope control to eliminate ground bounce
• Self-timed erase/write cycle that simplifies microcontroller interaction
• Hardware write-protect pin for additional protection against accidental data corruption
• Data retention period of greater than 200 years

Specifications

• Memory density: 32 Kbit
• Organisation: 4K x 8-bit
• Interface: 2-wire serial (I²C), up to 400kHz
• Supply voltage: 2.5V to 5.5V
• Operating temperature: -40°C to +85°C
• Package: 8-pin SOIC (surface mount)

Handling

This is an ESD-sensitive device, so proper handling precautions must be taken during installation.

Suitable for compact, space-constrained PCB designs, the Microchip 24LC32A-I/SN provides reliable non-volatile memory in a SOIC-8 package.