24CW640T-I/MUY

Memory IC Overview

The Microchip Technology 24CW640T-I/MUY is a 64 Kbit (8K x 8) serial electrically erasable programmable read-only memory (EEPROM). It utilizes a two-wire I2C interface with a maximum clock frequency of 1 MHz. The device operates within a supply voltage range of 1.6 V to 5.5 V and features software write protection. It is housed in an 8-lead Ultra Thin Dual Flat No-Lead (UDFN) package measuring 3x3 mm. The component supports industrial temperature operation from -40°C to +85°C, offers data retention exceeding 200 years, and guarantees 1 million erase/write cycles.

Memory IC Feature Summary

• Software-controlled write protection mechanism prevents accidental modification of stored data
• High-speed I2C serial interface supporting standard and fast mode operations up to 1 MHz
• Wide operating voltage range enabling compatibility with low-voltage embedded systems
• Industrial temperature rating suitable for demanding environmental conditions

Memory IC Applications

• Data logging in industrial monitoring systems
• Configuration storage in consumer electronics
• Parameter retention in automotive control modules
• Calibration data storage in sensor interfaces

Memory IC Procurement Notes

Verify the specific suffix MUY confirms the UDFN-8 package type and reel packaging format. Confirm the 'I' designation matches required industrial temperature specifications (-40°C to +85°C). Ensure the I2C address configuration aligns with system bus requirements. Cross-reference the datasheet revision date to ensure compliance with current RoHS and REACH standards before finalizing procurement orders.

Memory IC Selection Notes

Select this component when a compact surface-mount solution is required for 64 Kbit non-volatile storage. The 1 MHz I2C speed suits applications needing faster data throughput than standard 400 kHz devices. The wide 1.6 V to 5.5 V voltage range provides flexibility for mixed-voltage designs. Consider the UDFN-8 package dimensions against available PCB real estate constraints compared to TSSOP or SOIC alternatives.

Memory IC Part Context

This part belongs to the Microchip 24CW series of serial EEPROMs. The series is characterized by high reliability and low power consumption. The 24CW640 variant specifically provides 64 Kbit capacity. The 'T' indicates tape and reel packaging, while 'MUY' denotes the specific UDFN-8 footprint. This series complements other Microchip memory products like the 24LC and 24AA families.

Memory IC Replacement Considerations

Direct pin-compatible replacements include the 24CW640T-I/ST (TSSOP-8 package) and 24CW640T-I/Q4B (QFN-8 package). Verify that substitute packages fit the existing PCB footprint or allow for design modification. Ensure the replacement maintains the same 1 MHz I2C speed and 1.6 V minimum operating voltage.