24AA01-I/MS

Memory IC Overview

The Microchip Technology 24AA01-I/MS is a 1 Kbit (128 x 8) Electrically Erasable PROM (EEPROM) featuring a 2-Wire I2C compatible serial interface. It operates on a single supply voltage ranging from 1.7V to 5.5V with a maximum clock frequency of 400 kHz. The device supports an 8-byte page write buffer and includes hardware write protection via the WP pin. It is housed in an 8-lead MSOP package and rated for industrial temperatures between -40°C and +85°C.

Memory IC Feature Summary

• Low-power CMOS technology enabling operation down to 1.7V with minimal standby current
• Hardware write-protect capability allowing entire memory array locking when WP pin is tied high
• Integrated Schmitt trigger inputs and output slope control for noise suppression and ground bounce elimination
• Self-timed erase/write cycles with automatic acknowledge polling support

Memory IC Applications

• Industrial control systems requiring non-volatile data storage
• Consumer electronics utilizing low-voltage power supplies
• Smart cards and security tokens needing hardware write protection
• Automotive modules compliant with AEC-Q100 standards

Memory IC Procurement Notes

Verify the specific ordering suffix matches the required temperature grade and package type. Confirm that the I2C bus pull-up resistors are correctly sized for the operating voltage and clock speed. Ensure the Write-Protect pin is properly biased according to the desired memory access configuration before system integration.

Memory IC Selection Notes

Select this component for applications requiring low-voltage operation starting at 1.7V, which distinguishes it from the 2.5V minimum 24LC01B variant. The MSOP package offers a compact surface-mount solution suitable for space-constrained designs. Consider the 8-byte page write buffer efficiency for frequent small data updates compared to byte-write operations.

Memory IC Part Context

This part belongs to the 24XX01 family of 1 Kbit serial EEPROMs, sharing functional similarities with the 24LC01B and 24FC01. While the 24LC01B requires a higher minimum voltage and the 24FC01 supports faster speeds, the 24AA01 provides a balanced performance profile for standard industrial I2C applications within its specific voltage and temperature range.

Memory IC Replacement Considerations

Direct substitutes include the 24LC01B-I/MS and 24FC01-I/MS. Note that the 24LC01B requires a minimum supply voltage of 2.5V, whereas the 24AA01 supports 1.7V. The 24FC01 supports up to 1 MHz but may have different electrical characteristics.