MCHPAT25640B-SSHL-T
Overview
The AT25640B-SSHL-T is a 64Kbit serial EEPROM organized as 8192 words of 8 bits each, designed for reliable non-volatile data storage. It utilizes a high-speed SPI interface capable of 20 MHz clock rates and operates over a wide voltage range from 1.8V to 5.5V. This component is optimized for low-power applications, featuring a standby current of only 10 microamps.
Why Choose This Part
This device offers high reliability with a self-timed write cycle of 5ms and a 32-byte page mode for efficient data writes. It includes hardware write protection via the WP pin and block write protection for securing specific memory segments. The wide 1.8V to 5.5V operating range ensures compatibility with both legacy 5V systems and modern low-voltage logic.
Applications
Key Specifications
Getting Started
To interface with the AT25640B, configure your MCU's SPI peripheral for Mode 0 or Mode 3 operation. Use the standard 8-bit instruction set (WREN, WRITE, READ) and ensure the WP and HOLD pins are tied high if not in use. Microchip's MPLAB Code Configurator (MCC) provides drivers that can simplify the implementation of the SPI protocol for this device.
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