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25LC040A

MCHP25LC040A

Microchip Technology
Same 4-kilobit family from Microchip with compatible SPI command set and package options.
NRND13,553 in stock
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Overview

The 25LC040A is a 4-Kbit serial Electrically Erasable PROM (EEPROM) that utilizes a high-speed SPI bus interface. It is organized as 512 bytes of 8 bits each and supports a wide voltage range of 2.5V to 5.5V, making it suitable for low-power embedded designs.

Why Choose This Part

The device features a fast 10 MHz clock frequency and a low standby current of only 1 uA. It provides high reliability with a 16-byte page write capability and a self-timed write cycle of 5ms, ensuring efficient data management in power-sensitive applications.

Applications

Configuration Storage
Storing calibration data, device IDs, and user settings in space-constrained embedded systems.
Data Logging
Recording error logs or event history in industrial sensors and consumer electronics.
Boot Parameter Storage
Holding bootloader parameters or lookup tables for microcontrollers with limited internal NVM.

Key Specifications

Technology EEPROM
Memory Size 4Kbit
Memory Type Non-Volatile
Memory Format EEPROM
Mounting Type Surface Mount
Package / Case 8-SOIC (0.154", 3.90mm Width)
Clock Frequency 10 MHz
Memory Interface SPI
Voltage - Supply 2.5V ~ 5.5V
Memory Organization 512 x 8
Operating Temperature -40degC ~ 85degC (TA)
Supplier Device Package 8-SOIC
Write Cycle Time - Word, Page 5ms

Getting Started

To interface with this EEPROM, configure your MCU SPI master for Mode 0 or Mode 3. Use the standard 8-bit instruction set (READ, WRITE, WRDI, WREN, RDSR, WRSR) and ensure the CS line is toggled correctly to initiate and terminate operations. Hardware write protection is available via the WP pin.

Part of 25LCxx / AT25 SPI EEPROM family » 25LC040A

25LC040A Family

Part NumberDifferenceStock
25LC040A-I/SN I/SN 10,058

Also Consider

25LC040A (SOIC-8) MCHPMicrochip Technology - Standard 8-lead SOIC package variant for easier prototyping and assembly compared to smaller SOT-23 or DFN options.

Categories

Memory & Storage > EEPROM
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