25LC256T-M/MF

Overview

The Microchip Technology 25LC256T-M/MF is a 256 Kbit (32K x 8) Serial EEPROM utilizing the industry-standard SPI compatible serial bus. It operates within a supply voltage range of 2.5 V to 5.5 V and supports a maximum clock frequency of 10 MHz. The device features an access time of 50 ns and a maximum active read current of 6 mA. It is housed in an 8-lead DFN package measuring 6x5 mm. The component is rated for an industrial temperature range from -40°C to +85°C, with extended military grades available up to +125°C. Data retention is specified at 200 years.

Feature Summary

• Utilizes standard SPI serial interface for efficient data transfer
• Provides high reliability with long-term data retention capabilities
• Operates across wide voltage ranges suitable for various logic levels

Applications

• Industrial control systems requiring non-volatile data storage
• Consumer electronics needing configuration parameter retention
• Automotive applications demanding robust memory solutions

Procurement Notes

Verify the specific suffix 'M' indicates military-grade temperature ratings if required, as standard variants may differ. Confirm the DFN-8 package dimensions match your PCB footprint constraints. Ensure the SPI interface polarity settings align with your system controller. Check for RoHS compliance documentation relevant to your region's regulations before finalizing procurement orders.

Selection Notes

Select this part when a compact 8-lead DFN package is necessary for space-constrained designs. Choose the 25LC256T-M/MF over through-hole options like TSSOP or SOIC for higher density board layouts. Consider the 10 MHz speed limit against your system clock requirements. Verify that the 2.5V minimum operating voltage is compatible with your power supply rails.

Part Context

This component belongs to the Microchip 25LC256X family of serial EEPROMs. It shares architectural similarities with other members like the 25LC256-E/SM but differs in packaging and temperature grade. The 'T' suffix typically denotes tape and reel packaging, while 'MF' specifies the DFN-8 body style. It serves as a direct replacement for legacy parallel EEPROMs in modern serial-based designs.

Replacement Considerations

The 25LC256T-E/MF is a verified commercial-grade alternative with identical pinout and functionality but limited to +85°C operation. The 25LC256X-I/ST offers similar electrical characteristics in a TSSOP-8 package. Ensure substitute parts maintain the same SPI command set compatibility.