24LC21A中文资料1Kb I2C Serial EEPROM for DDC1™/DDC2™ Monitor Identification数据手册Microchip规格书

描述 Description

The Microchip Technology Inc. 24LC21A is a 128 x 8-bitdual-mode Electrically Erasable PROM. This device isdesigned for use in applications requiring storage andserial transmission of configuration and control information.Two modes of operation have been implemented:Transmit-Only mode and Bidirectional mode. Uponpower-up, the device will be in the Transmit-Only mode,sending a serial bit stream of the memory array from 00hto 7Fh, clocked by the VCLK pin. A valid high-to-lowtransition on the SCL pin will cause the device to enterthe transition mode, and look for a valid control byte onthe I2C™Compatible bus. If it detects a valid control byte from themaster, it will switch into Bidirectional mode, with byteselectable read/write capability of the memory arrayusing SCL. If no control byte is received, the device willrevert to the Transmit-Only mode after it receives 128consecutive VCLK pulses while the SCL pin is idle. The24LC21A is available in a standard 8-pin PDIP andSOIC package in industrial temperature range.

特性 Features

Single Supply with Operation Down to 2.5V
Completely Implements DDC1™/DDC2™Interface for Monitor Identification, IncludingRecovery to DDC1
Pin and Function Compatible with 24LC21
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)
Page Write Buffer for up to Eight Bytes
1,000,000 Erase/Write Cycles Ensured
Data Retention > 200 years

简介

24LC21A属于集成电路（IC）的存储器。由制造生产的24LC21A存储器存储器是集成电路上用作数据存储设备的半导体器件。这些器件分为非易失性或易失性两种，格式包括 CBRAM、DRAM、EEPROM、EERAM、EPROM、闪存、FRAM、NVSRAM、PCM (PRAM)、PSRAM、RAM 和 SRAM。这些器件的存储容量为 64 b 至 6 Tb 不等，接口有 I2C、MMC、并行、eMMC、串行、单线、SPI、UFS、Xccela 总线和 1-线。