Datasheet > ST24LC21

ST24LC21

更新时间： 2024-09-29 22:50:07

品牌	Logo	应用领域
意法半导体 - STMICROELECTRONICS		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
18页	151K
描述
1Kb x8 DUAL MODE SERIAL EEPROM for VESA Plug&Play

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中文翻译

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数据手册

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ST24LC21 数据手册

ST24LC21

1Kb (x8) DUAL MODE SERIAL EEPROM

for VESA Plug&Play

NOT FOR NEW DESIGN

1 MILLION ERASE/WRITE CYCLES

40 YEARS DATA RETENTION

2.5V to 5.5V SINGLE SUPPLY VOLTAGE

400k Hz COMPATIBILITY OVER the FULL

RANGE of SUPPLY VOLTAGE

TWO WIRE SERIAL INTERFACE I²C BUS

COMPATIBLE

PAGE WRITE (up to 8 BYTES)

BYTE, RANDOM and SEQUENTIAL READ

MODES

PSDIP8 (B)

SO8 (M)

0.25mm Frame

SELF TIMED PROGRAMMING CYCLE

AUTOMATIC ADDRESS INCREMENTING

ENHANCED ESD/LATCH UP

PERFORMANCES

ST24LC21 is replaced by the ST24LC21B

Figure 1. Logic Diagram

DESCRIPTION

The ST24LC21 is a 1K bit electrically erasable

programmable memory (EEPROM), organized by

8bits.Thisdevice can operate intwomodes:Trans-

mit Only mode and I²C bidirectional mode. When

powered, the device is in Transmit Only mode with

EEPROM data clocked out from the rising edge of

the signal applied on VCLK.

The device will switch to the I²C bidirectional mode

upon the falling edge of the signal applied on SCL

pin. The ST24LC21 cannot switch from the I²C

bidirectional mode to the Transmit Only mode (ex-

cept when the power supply is removed). The

device operates with a power supply value as low

as 2.5V. Both Plastic Dual-in-Lineand PlasticSmall

Outline packages are available.

SCL

SDA

ST24LC21

VCLK

Table 1. Signal Names

SDA

SCL

V_CC

Serial Data Address Input/Output

Serial Clock (I²C mode)

Supply Voltage

AI01489

V_SS

Ground

VCLK

Clock Transmit only mode

June 1997

1/18

This is information on a product still in production but not recommended for new designs.

12 3 4 5 6 7...18

中文翻译

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与ST24LC21相关器件

型号	品牌	获取价格	描述	数据表
ST24LC21B	STMICROELECTRONICS	获取价格	1 Kbit x8 Dual Mode Serial EEPROM for VESA PLUG & PLAY
ST24LC21B1	ETC	获取价格	I2C Serial EEPROM
ST24LC21B1TR	STMICROELECTRONICS	获取价格	1Kb x8 DUAL MODE SERIAL EEPROM for VESA Plug&Play
ST24LC21BB1	ETC	获取价格	I2C Serial EEPROM
ST24LC21BB1TR	STMICROELECTRONICS	获取价格	1 Kbit x8 Dual Mode Serial EEPROM for VESA PLUG & PLAY
ST24LC21BB6	ETC	获取价格	I2C Serial EEPROM
ST24LC21BB6TR	STMICROELECTRONICS	获取价格	1 Kbit x8 Dual Mode Serial EEPROM for VESA PLUG & PLAY
ST24LC21BM1	ETC	获取价格	I2C Serial EEPROM
ST24LC21BM1TR	STMICROELECTRONICS	获取价格	1 Kbit x8 Dual Mode Serial EEPROM for VESA PLUG & PLAY
ST24LC21BM6	ETC	获取价格	I2C Serial EEPROM