Datasheet > 24LC21/PC27

24LC21/PC27

更新时间： 2024-09-25 06:00:31

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光电二极管
页数	文件大小	规格书
24页	371K
描述
128 X 8 I2C/2-WIRE SERIAL EEPROM, PDIP8, 0.300 INCH, PLASTIC, MS-001, DIP-8

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中文翻译

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数据手册

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24LC21/PC27 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:

- 1 mA active current typical

VCLK

- 10 A standby current typical at 5.5V

SCL

SDA

™

• 2-wire serial interface bus, I C compatible

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

• Page-write buffer for up to 8 bytes

VSS

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

• Factory programming (QTP) available

• 1,000,000 erase/write cycles ensured

• Data retention > 200 years

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

 1994-2012 Microchip Technology Inc.

DS21095K-page 1

12 3 4 5 6 7...24

中文翻译

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