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

The MICROCHIP 24LC32A-I/SN is a 32Kbit Electrically Erasable Programmable Read-Only Memory (EEPROM) module, designed using advanced low-power CMOS technology. This device provides a reliable non-volatile memory solution with a capacity of 4K x 8 bits, accessed via a convenient 2-wire serial interface that is fully I²C™ compatible. Its low-voltage architecture allows for operation down to 1.7V, drawing minimal standby and active currents of just 1µA and 1mA respectively, making it an ideal choice for energy-sensitive and battery-powered applications such as data acquisition systems.

A key feature is its 32-byte page write buffer, which enables efficient programming of multiple bytes with a maximum page write time of just 5ms. The device supports cascading, with functional address lines allowing up to eight units to be connected on the same bus, expanding the total addressable memory space up to 256 Kbits. Enhanced data integrity is ensured by features including Schmitt-trigger inputs for noise suppression, output slope control to eliminate ground bounce, and an impressive data retention period of greater than 200 years.

The self-timed erase/write cycle simplifies microcontroller interaction, while a hardware write-protect pin provides an additional layer of security against accidental data corruption. The device is supplied in a compact SOIC-8 surface-mount package, suitable for modern, space-constrained PCB designs. Please note, this is an ESD-sensitive device; proper handling precautions must be taken during installation. Market demand for this product can affect lead times and delivery schedules.

Specifications at a Glance:

• 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)
• Key Features: Page write