Datasheet > 25C040IN

25C040IN

更新时间： 2024-11-23 23:19:23

品牌	Logo	应用领域
其他 - ETC		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
12页	157K
描述
EEPROM

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中文翻译

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数据手册

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25C040IN 数据手册

25AA040/25LC040/25C040

4K SPI Bus Serial EEPROM

™

PACKAGE TYPES

DEVICE SELECTION TABLE

Part

Number

VCC

Range

Max Clock

Frequency

Temp

Ranges

PDIP/SOIC

VCC

HOLD

SCK

25AA040

25LC040

25C040

1.8-5.5V

2.5-5.5V

4.5-5.5V

1 MHz

2 MHz

3 MHz

C,I

C,I,E

VSS

FEATURES

• Low power CMOS technology

- Write current: 3 mA typical

- Read current: 500 µA typical

- Standby current: 500 nA typical

• 512 x 8 bit organization

TSSOP

SCK

VSS

HOLD

VCC

• 16 byte page

• Write cycle time: 5ms max.

• Self-timed ERASE and WRITE cycles

• Block write protection

- Protect none, 1/4, 1/2, or all of array

• Built-in write protection

- Power on/off data protection circuitry

- Write enable latch

BLOCK DIAGRAM

Status

- Write protect pin

• Sequential read

HV Generator

• High reliability

- Endurance: 1M cycles (guaranteed)

- Data retention: > 200 years

- ESD protection: > 4000 V

• 8-pin PDIP, SOIC, and TSSOP packages

• Temperature ranges supported:

EEPROM

Array

Memory

Control

Logic

I/O Control

Logic

- Commercial (C):

- Industrial (I):

0°C to +70°C

-40°C to +85°C

-40°C to +125°C

Dec

- Automotive (E) (25C040):

Page Latches

DESCRIPTION

The Microchip Technology Inc. 25AA040/25LC040/

25C040 (25xx040 ) is a 4K bit serial Electrically Eras-

Y Decoder

able PROM. The memory is accessed via a simple

Serial Peripheral Interface (SPI) compatible serial bus.

The bus signals required are a clock input (SCK) plus

separate data in (SI) and data out (SO) lines. Access to

the device is controlled through a chip select (CS)

input.

SCK

Sense Amp.

R/W Control

HOLD

VCC

VSS

Communication to the device can be paused via the

hold pin (HOLD). While the device is paused, transi-

tions on its inputs will be ignored, with the exception of

chip select, allowing the host to service higher priority

interrupts. Also, write operations to the device can be

disabled via the write protect pin (WP).

*25xx040 is used in this document as a generic part number for the 25AA040/25LC040/25C040 devices.

SPI is a trademark of Motorola.

1998 Microchip Technology Inc.

DS21204B-page 1

12 3 4 5 6 7...12

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