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M95640-WMN6TP

M95640-WMN6TP

STMicroelectronics
EEPROM Memory IC 64Kbit SPI 20 MHz 8-SOIC
Active32,113 in stock
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Overview

The M95640-WMN6TP is a 64Kbit non-volatile SPI EEPROM organized as 8192 bytes. It operates across a wide voltage range of 2.5V to 5.5V and supports high-speed clock frequencies up to 20 MHz, making it suitable for standard embedded data logging and configuration storage.

Why Choose This Part

This device features robust ESD protection up to 4000V (HBM) and Schmitt trigger inputs for reliable signal processing in noisy environments. It provides flexible data protection through software-defined quarter-block write masking and a dedicated hardware write-protect pin.

Applications

Firmware Parameter Storage
Storing calibration data, device ID strings, and user configuration settings that must persist through power cycles.
Event Logging
Recording error codes, system timestamps, and sensor history in low-power industrial or consumer electronics.
State Preservation
Maintaining operational states and counter values for recovery after unexpected power loss in mains-powered appliances.

Key Specifications

Technology EEPROM
Memory Size 64Kbit
Memory Type Non-Volatile
Memory Format EEPROM
Mounting Type Surface Mount
Package / Case 8-SOIC (0.154", 3.90mm Width)
Clock Frequency 20 MHz
Memory Interface SPI
Voltage - Supply 2.5V ~ 5.5V
Memory Organization 8K 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 peripheral for Mode 0 or Mode 3. Begin development by implementing the standard SPI instruction set for 'Read' (0x03) and 'Write' (0x02), ensuring the Write Enable (WREN) latch is set before any programming operation.

Also Consider

25LC640A-I/SN MCHPMicrochip Technology - A highly compatible 64Kbit SPI EEPROM that offers a similar 10MHz to 20MHz clock speed and voltage range.
AT25640B-SSHL-T Microchip Technology (Atmel) - Features an ultra-low standby current and is widely used as a drop-in alternative for industrial SPI memory applications.
CAT25640VI-GT3 ONonsemi - Offers an equivalent 8K x 8 organization in an 8-SOIC package with wide supply voltage compatibility.