25LC040A-E/MC MICROCHIP [Microchip Technology], 25LC040A-E/MC Datasheet

25LC040A-E/MC

Manufacturer Part Number

25LC040A-E/MC

Description

4K SPI Bus Serial EEPROM

Manufacturer

MICROCHIP [Microchip Technology]

Datasheet

1.25LC040A-EMC.pdf (28 pages)

Current page: 1 of 28
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Device Selection Table

Features:

• Max. Clock 10 MHz

• Low-Power CMOS Technology:

• 512 x 8-Bit Organization

• Write Page mode (up to 16 bytes)

• Sequential Read

• Self-timed Erase and Write Cycles (5 ms max.)

• Block Write Protection:

• Built-in Write Protection:

• High Reliability:

• Temperature Ranges Supported:

• Pb-free Packages Available

Pin Function Table

- Max. Write Current: 5 mA at 5.5V, 10 MHz

- Read Current: 5 mA at 5.5V, 10 MHz

- Standby Current: 5 μA at 5.5V

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

- Power-on/off data protection circuitry

- Write enable latch

- Write-protect pin

- Endurance: 1,000,000 Erase/Write cycles

- Data retention: > 200 years

- ESD protection: > 4000V

- Industrial (I):

- Automotive (E):

Part Number

HOLD

Name

25AA040A

25LC040A

SCK

Chip Select Input

Serial Data Output

Write-Protect

Ground

Serial Data Input

Serial Clock Input

Hold Input

Supply Voltage

1.8-5.5V

2.5-5.5V

Function

4K SPI Bus Serial EEPROM

Range

-40°C to +85°C

-40°C to +125°C

25AA040A/25LC040A

Page Size

16 Bytes

*25XX040A is used in this document as a generic part number for the

25AA040A and the 25LC040A.

Description:

The Microchip Technology Inc. 25XX040A* is a 4 Kbit

Serial Electrically Erasable Programmable Read-Only

Memory (EEPROM). 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.

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.

The 25XX040A is available in standard packages

including 8-lead PDIP and SOIC, and advanced

and rotated TSSOP, 8-lead 2x3 DFN, and 6-lead

SOT-23.

Package Types (not to scale)

packages including 8-lead MSOP, 8-lead TSSOP

SCK

Temp. Ranges

TSSOP/MSOP

SOT-23

(ST, MS)

I, E

(OT)

HOLD

X-Rotated TSSOP

HOLD

SCK

(X/ST)

P, MS, SN, ST, MC, OT

Packages

SCK

PDIP/SOIC

DS21827D-page 1

DFN

(P, SN)

(MC)

SCK

HOLD

SCK

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