Microchip Technology Inc
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24LCS22A

2Kb I2C Serial EEPROM for DDC1™/DDC2™ Monitor Identification

Status: In Production

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:
  • 2-Wire Serial Interface Bus, I2C™ Compatible
  • 100 kHz (2.5V) and 400 kHz (5V) Compatibility
  • Self-Timed Write Cycle (including Auto-Erase)
  • Hardware Write-Protect Pin
  • Page Write Buffer for up to Eight Bytes
  • 1,000,000 Erase Write Cycles
  • Data Retention >200 years
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Overview
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Development Environment
Similar Devices
RoHS Information
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Device Overview

Summary

The Microchip Technology Inc. 24LCS22A is a 256 x 8-bit dual-mode Electrically Erasable PROM (EEPROM). 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™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 24LCS22A is available in standard 8-pin PDIP and SOIC packages. The 24LCS22A features a flexible write-protect pin which is enabled by writing to address 7Fh (usually the checksum in VESA® applications.

Additional Features
  • Single Supply with Operation Down to 2.5V
  • Supports Enhanced EDID™ (E-EDID™) 1.3
  • Completely Implements DDC1™/DDC2™ Interfacefor Monitor Identification, including Recoveryto DDC1
  • 2 Kbit Serial EEPROM Low-Power CMOSTechnology:
  • 2-Wire Serial Interface Bus, I2C™ Compatible
  • 100 kHz (2.5V) and 400 kHz (5V) Compatibility
  • Self-Timed Write Cycle (including Auto-Erase)
  • Hardware Write-Protect Pin
  • Page Write Buffer for up to Eight Bytes
  • 1,000,000 Erase Write Cycles
  • Data Retention >200 years
Parametrics
Name
Value
Density
2K bits (x8)
Op. Volt Range (V)
2.5 to 5.5
Max. Clock Freq.
400 kHz
Page Size (bytes)
8
Write Protect
Whole Array
Temp Range (°C)
-40°C to +85°C
Endurance
1,000,000

Documents

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Data Sheets

06/08/2009
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Development Environment

  • Demo & Evaluation Boards
Demo & Evaluation Boards
Serial EEPROM PIM PICtail Pack
Serial EEPROM PIM PICtail Pack ( AC243003 )

The Serial EEPROM PIM PICtail™ Modules are a series of boards designed around Microchip Serial EEPROM devices. The boards are designed to interface with the PICtail Plus connector as well as the MPLAB® Starter Kit for Serial Memory Products and the PICkit™ 2, allowing you to get started right out of the box.

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Add To Cart
MPLAB Starter Kit for Memory Products
MPLAB Starter Kit for Memory Products ( DV243003 )

Designers of Serial EEPROM applications can enjoy the increased productivity, reduced time to market and rock-solid design that only a well thought out development system can provide. Microchip's MPLAB® Starter Kit for Serial Memory Products includes everything necessary to quickly develop a robust and reliable Serial EEPROM design, and greatly reduces the time required for system integration...

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Add To Cart

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RoHS Information

Part Number
Device Weight (g)
Shipping Weight (Kg)
Lead Count
Package Type
Package Width
Solder Composition
JEDEC Indicator
RoHS
China EFUP
24LCS22A-I/P
0.486700
0.900000
8
PDIP
.300in
Matte Tin
e3
24LCS22A-I/SN
0.078000
0.160000
8
SOIC
.150In(3.90mm)
Matte Tin
e3
24LCS22AT-I/SN
0.078000
0.230303
8
SOIC
.150In(3.90mm)
Matte Tin
e3
To see a complete listing of RoHS data for this device, please Click here
Shipping Weight = Device Weight + Packing Material weight. Please contact sales office if device weight is not available.

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