24LC22A-I/SN EEPROM, 2 Kb (256 x 8), I2C, 400kHz, 2.5 ... 5.5 V, SO-8

2K VESA® E-EDID™ Serial EEPROM

Description: The 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 (1 Kbit) and Bidirectional mode (2 Kbit). 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 Bidirectional 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 PDIP and SOIC packages.

Features: - Single Supply with Operation Down to 2.5V - Supports Enhanced EDID™ (E-EDID™) 1.3 - Completely Implements DDC1™/DDC2™ Interface for Monitor Identification, Including Recovery to DDC1 - 2 Kbit Serial EEPROM Low-Power CMOS Technology: - 1 mA typical active current - 10 uA standby current typical at 5.5V - 2-Wire Serial Interface Bus, I2C™ Compatible - 100 kHz (2.5V) and 400 kHz (5V) Compatibility - Self-Timed Write Cycle (including Auto-Erase) - Page-Write Buffer for up to Eight Bytes - 1,000,000 Erase/Write Cycles - Data Retention >200 years - ESD Protection >4000V - 8-pin PDIP and SOIC Packages - Available Temperature Ranges: -40°C to +85°C - Pb-Free and RoHS Compliant