Datasheet > 24LC21_04

24LC21_04

更新时间： 2024-11-18 04:25:27

品牌	Logo	应用领域
美国微芯 - MICROCHIP		可编程只读存储器电动程控只读存储器电可擦编程只读存储器
页数	文件大小	规格书
24页	307K
描述
1K 2.5V Dual Mode I2C Serial EEPROM

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中文翻译

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数据手册

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24LC21_04 数据手册

Not recommended for new designs –

Please use 24LCS21A.

24LC21

1K 2.5V Dual Mode I²C^™Serial EEPROM

Features:

Package Types

PDIP

• Single supply with operation down to 2.5V

• Completely implements DDC1^™/DDC2^™interface

for monitor identification

VCC

• Low-power CMOS technology:

VCLK

- 1 mA active current typical

- 10 µA standby current typical at 5.5V

• 2-wire serial interface bus, I²C^™compatible

• Self-timed write cycle (including auto-erase)

• Page-write buffer for up to 8 bytes

• 100 kHz (2.5V) and 400 kHz (5V) compatibility

• Factory programming (QTP) available

• 1,000,000 erase/write cycles ensured

• Data retention > 200 years

SCL

SDA

VSS

SOIC

VCC

• 8-pin PDIP and SOIC package

VCLK

• Available for extended temperature ranges

Commercial (C):

Industrial (I):

0°C to +70°C

-40°C to +85°C

SCL

SDA

VSS

Description:

The Microchip Technology Inc. 24LC21 is a 128 x 8 bit

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 and Bidirectional mode. Upon

power-up, the device will be in the Transmit-only mode,

sending a serial bit stream of the entire memory array

contents, clocked by the VCLK pin. A valid high-to-low

transition on the SCL pin will cause the device to enter

the Bidirectional mode, with byte selectable read/write

capability of the memory array. The 24LC21 is available

in a standard 8-pin PDIP and SOIC package, in both

commercial and industrial temperature ranges.

Block Diagram

VCLK

HV Generator

I/O

Control

Logic

Memory

Control

Logic

EEPROM

Array

XDEC

Page Latches

SDA SCL

YDEC

VCC

VSS

Sense Amp

R/W Control

I C is a trademark of Philips Corporation.

DDC is a trademark of the Video Electronics Standards Association.

 2004 Microchip Technology Inc.

DS21095J-page 1

12 3 4 5 6 7...24

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