Download Datasheets 24LC22A Device 
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Home - Memory Products - 2K Devices - 24LC22A Device, download datasheet

Download Datasheets 24LC22A Device

The Microchip Technology Inc. 24LC22A is a 256 x 8-bit dual-mode Electrically Erasable PROM. This device is designed for use in applications requiring storage and serial transmission of configuration and control information. Two modes of operation have been implemented: Transmit-Only Mode (1Kbit) and Bi-directional Mode (2Kbit). Upon power-up, the device will be in the Transmit-Only Mode, sending a serial bit stream of the memory array from 00h to 7Fh, clocked by the VCLK pin. A valid high to low transition on the SCL pin will cause the device to enter the transition mode, and look for a valid control byte on the I2C bus. If it detects a valid control byte from the master, it will switch into Bi-Directional Mode, with byte selectable read/write capability of the entire 2K memory array using SCL. If no control byte is received, the device will revert to the Transmit-Only Mode after it receives 128 consecutive VCLK pulses while the SCL pin is idle. The 24LC22A is available in standard 8-pin DIP and SOIC packages.

Datasheet and Other Documentation

Detailed Content

Lit. Number



24LC22A Datasheet


Download 24LC22A Datasheet


In Production

Specification Chart

Operat. Voltage

E/W Cycles

Density (Organ.)

Write Speed

Clock Speed

2.5V to 5.5V


2K bits (x8)

10 ms

400 kHz

Additional Features

Similar to 24LC21A with an additional 1K bits of memory to support high end monitors. Plug n Play compatible.

Package Options

8 SOIC 150mil(SN), 8 PDIP(P), 2008-2015 - download datasheets