24LC41 Datasheet

IC型号：
24LC41
PDF描述：
1K/4K 2.5V Dual Mode, Dual Port I 2 C ? Serial EEPROM
文件大小：
140.45KB
芯片厂家：
Microchip

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24LC41

1K/4K 2.5V Dual Mode, Dual Port I

鈩?/div>

Serial EEPROM

FEATURES

鈥?Single supply with operation down to 2.5V

鈥?Completely implements DDC1

鈩?/div>

/DDC2

鈩?/div>

interface

for monitor identi铿乧ation

鈥?Separate high speed 2-wire bus for

microcontroller access to 4K-bit Serial EEPROM

鈥?Low power CMOS technology

鈥?2 mA active current typical

鈥?20

碌

A standby current typical at 5.5V

鈥?Dual 2-wire serial interface bus

鈥?Hardware write-protect for both ports

鈥?Self-timed write cycle (including auto-erase)

鈥?Page-write buffer for up to 8 bytes (DDC port) or

16 bytes (4K Port)

鈥?100 kHz (2.5V) and 400 kHz (5V) compatibility

鈥?1,000,000 erase/write cycles guaranteed

鈥?Data retention > 40 years

鈥?8-pin PDIP package

鈥?Available for extended temperature ranges

+70

掳

- Commercial (C):

掳

C to

- Industrial (I):

-40

掳

C to

+85

掳

PACKAGE TYPE

PDIP

DSCL

VCLK/DWP

MSDA

24LC41

DSDA

MWP

MSCL

BLOCK DIAGRAM

DDC Monitor Port

DSDA

EDID Table

1K Bit

VCLK/DWP

DSCL

Microcontroller Access Port

MSDA

4K Bit

Serial

EEPROM

DESCRIPTION

The Microchip Technology Inc. 24LC41 is a dual-port

128 x 8 and 512 x 8-bit Electrically Erasable PROM

(EEPROM). This device is designed for use in applica-

tions requiring storage and serial transmission of con-

铿乬uration and control information. Three modes of

operation have been implemented:

鈥?Transmit-Only Mode for the DDC Monitor Port

鈥?Bi-directional Mode for the DDC Monitor Port

鈥?Bi-directional, industry-standard 2-wire bus for the

4K Microcontroller Access Port

Upon power-up, the DDC Monitor Port will be in the

Transmit-Only Mode, repeatedly sending a serial bit

stream of the entire memory array contents, clocked by

the VCLK/DWP pin. A valid high to low transition on the

DSCL pin will cause the device to enter the bi-direc-

tional Mode, with byte-selectable read/write capability

of the memory array. The 4K-bit microcontroller port is

completely independent of the DDC port, therefore, it

can be accessed continuously by a microcontroller

without interrupting DDC transmission activity. The

24LC41 is available in a standard 8-pin PDIP package

in both commercial and industrial temperature ranges.

MSCL

MWP

DDC is a trademark of the Video Electronics Standards Association.

C is a trademark of Philips Corporation.

漏

1996 Microchip Technology Inc.

DS21140B-page 1

This document was created with FrameMaker 4 0 4

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