Datasheet > 24LC21A-I/SNROC

24LC21A-I/SNROC

更新时间： 2024-09-25 04:55:03

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
26页	337K
描述
128 X 8 I2C/2-WIRE SERIAL EEPROM, PDSO8, 3.90 MM, ROHS COMPLIANT, PLASTIC, SOIC-8

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中文翻译

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24LC21A-I/SNROC 数据手册

24LC21A

1K 2.5V Dual Mode I²C^™Serial EEPROM

Features:

Package Types

• Single Supply with Operation Down to 2.5V

PDIP

Vcc

• Completely Implements DDC1™/DDC2™

Interface for Monitor Identification, Including

Recovery to DDC1

VCLK

• Pin and Function Compatible with 24LC21

• Low-Power CMOS Technology

SCL

SDA

- 1 mA typical active current

VSS

- 10 μA standby current typical at 5.5V

• 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

SOIC

Vcc

VCLK

•

1,000,000 Erase/Write Cycles Ensured

• Data Retention > 200 years

SCL

SDA

• ESD Protection > 4000V

• 8-pin PDIP and SOIC Package

• Available for Extended Temperature Ranges

Vss

- Industrial (I):

-40°C to +85°C

• Pb-Free and RoHS Compliant

Block Diagram

Description:

HV Generator

The Microchip Technology Inc. 24LC21A is a 128 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 informa-

tion. 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 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 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 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

24LC21A is available in a standard 8-pin PDIP and

SOIC package in industrial temperature range.

I/O

Control

Logic

Memory

Control

Logic

EEPROM

Array

XDEC

Page Latches

SCL

SDA

YDEC

VCLK

Sense AMP

R/W Control

VCC

VSS

Pin Function Table

Name

Function

VSS

SDA

SCL

VCLK

VCC

Ground

Serial Address/Data I/O

Serial Clock (Bidirectional mode)

Serial Clock (Transmit-Only mode)

+2.5V to 5.5V Power Supply

No Connection

DDC is a trademark of the Video Electronics Standards

Association.

I C is a trademark of Philips Corporation.

DS21160G-page 1

12 3 4 5 6 7...26

中文翻译

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与24LC21A-I/SNROC相关器件

型号	品牌	获取价格	描述	数据表
24LC21A-IP	MICROCHIP	获取价格	1K 2.5V Dual Mode I 2 C Serial EEPROM
24LC21A-I-P	MICROCHIP	获取价格	1K 2.5V Dual Mode I2C Serial EEPROM
24LC21A-ISN	MICROCHIP	获取价格	1K 2.5V Dual Mode I 2 C Serial EEPROM
24LC21A-I-SN	MICROCHIP	获取价格	1K 2.5V Dual Mode I2C Serial EEPROM
24LC21A-P	MICROCHIP	获取价格	1K 2.5V Dual Mode I 2 C Serial EEPROM
24LC21A-SN	MICROCHIP	获取价格	1K 2.5V Dual Mode I 2 C Serial EEPROM
24LC21AT	MICROCHIP	获取价格	1K 2.5V Dual Mode I2C™ Serial EEPROM
24LC21AT/SN	ETC	获取价格	EEPROM
24LC21AT/SNROC	MICROCHIP	获取价格	128 X 8 I2C/2-WIRE SERIAL EEPROM, PDSO8, 0.150 INCH, PLASTIC, SOIC-8
24LC21AT-I	MICROCHIP	获取价格	1K 2.5V Dual Mode I2C Serial EEPROM

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