MICROCHIP 64Kbit SPI EEPROM 25LC640 SOIC8

The MICROCHIP 25LC640-I/SN is a high-reliability 64Kbit serial Electrically Erasable Programmable Read-Only Memory (EEPROM) designed for efficient data storage in a wide range of electronic applications. This device is accessed through a simple Serial Peripheral Interface (SPI) compatible bus, with clock (SCK), data in (SI), and data out (SO) lines, and controlled via a chip select (CS) input.

The memory supports low-power CMOS technology, ensuring energy efficiency in battery-powered devices. It features a 32-byte page for efficient data write operations, with a maximum write cycle time of 5ms. Self-timed erase and write cycles simplify the programming process, while block and built-in write protection enhance security against unintended writes. Power on/off data protection circuitry safeguards data during supply transitions.

Key Features

• 64Kbit memory density with 8K x 8-bit configuration
• SPI interface with a maximum clock frequency of 2MHz
• Surface mount package in SOIC8 (8 pins)
• Wide supply voltage range (2.5V to 5.5V)
• Operating temperature range from -40°C to +85°C
• High reliability with over 200 years of data retention
• MSL 1 - Unlimited (moisture sensitivity level)

The 25LC640 supports sequential read operations, making it ideal for applications requiring fast data access. This product is suitable for use in computers, computer peripherals, and automotive environments, delivering dependable non-volatile storage for firmware, configuration parameters, and calibration data.