MCHP25LC640A-I/SN
Overview
The 25LC640A-I/SN is a 64-Kbit serial Electrically Erasable PROM (EEPROM) organized as 8192 x 8 bits. It utilizes a high-speed SPI bus interface capable of reaching 10 MHz clock frequencies across a wide supply voltage range of 2.5V to 5.5V. Designed for low-power operation, it features a standby current of only 1 uA and includes a 32-byte page write capability.
Why Choose This Part
This device offers high reliability with self-timed erase and write cycles limited to 5 ms maximum. Its SPI interface supports sequential reads and hardware write protection, making it easy to integrate with modern microcontrollers while maintaining low power consumption of 5 mA at 5.5V during active cycles.
Applications
Key Specifications
Getting Started
Interface this memory with any MCU using an SPI peripheral configured for Mode 0 or Mode 3. Use the CS, SCK, SI, and SO pins to execute standard instructions such as READ, WRITE, and WREN (Write Enable). Engineers should implement the 32-byte page buffer logic to optimize write performance and prevent unnecessary cycle wear.
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