24LC22A-I/P Part Information

Details for 24LC22A-I/P by Microchip Technology


Part Description

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 (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 I 2 C™Compatible 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.

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Part Features

  • Single Supply with Operation Down to 2.5V
  • Supports Enhanced EDIDu2122 (E-EDIDu2122) 1.3
  • Completely Implements DDC1u2122/DDC2u2122 Interface for Monitor Identification, Including Recovery to DDC1
  • 2 Kbit Serial EEPROM Low-Power CMOS Technology:
  • 2-Wire Serial Interface Bus, I2Cu2122 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

Part Specifications

E/W Cycles 1000000
Density (Organization) 2k bits (x8)
Endurance 1,000,000
Max. Clock Freq. 400 kHz
Max. Stand By Current (µA) 30
Memory Organization 1
Min CLock Freq. 100 KHz
Operating Voltage Min. (V) 2.5
Oper Voltage Max (V) 5.5
Page Size (bytes) 8
ProgMemoryKB 0.25
Write Current 3
Write Protected True
Write Speed (ms) 10
Address Pins 3
ESD 4000V
Memory Org x8
Memory Size 2K
Memory Size Num 2000
Read Current 1
Write Protect Scheme None
Comments VESA dual mode; pin 7 = VCLK.
Temperature Range -40C to +85C

Alternative Part Descriptions

  • SERIAL EEPROM, 2KBIT, 400KHZ, DIP-8; Memory Interface Type:Serial I2C (2-Wire); Memory Size:2Kbit; EEPROM Memory Configuration:256K x 8bit; Clock Frequency:400kHz; Memory Case Style:DIP; No. of Pins:8Pins; Supply Voltage Min:2.5V RoHS Compliant: Yes | Newark Electronics
  • EEPROM Serial-I2C 2K-bit 256 x 8 3.3V/5V 8-Pin PDIP | Avnet America
  • EEPROM memory; I2C; 256x8bit; 2.5÷5.5V; 400kHz; DIP8; serial | Transfer Multisort Elektronik
  • Microchip 24LC22A-I/P EEPROM Memory, 2kbit, 3500ns, 4.5 to 5.5 V 8-Pin PDIP | Allied Electronics & Automation
  • EEPROM Serial-I2C 2K-bit 256 x 8 3.3V/5V 8-Pin PDIP | Avnet Europe
  • 24LC024 Series 2 Kb I2C 2 Wire Interface(256 x 8) Serial EEPROM - PDIP-8 | Future Electronics

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