24AA32AT-I/MS

Memory IC Overview

The Microchip Technology 24AA32AT-I/MS is a 32-Kbit Electrically Erasable PROM (EEPROM) organized as a single block of 4K x 8-bit memory. It features a two-wire serial interface compatible with I²C™ protocols, supporting clock frequencies up to 400 kHz for VCC ≥ 2.5V and 100 kHz for lower voltages. The device operates on a single supply ranging from 1.7V to 5.5V, with typical standby current of 1 µA and active current of 1 mA. It includes a 32-byte page write buffer, hardware write-protect capability via the WP pin, and Schmitt trigger inputs for noise suppression. The component is housed in an 8-lead MSOP package and supports industrial temperature ranges.

Memory IC Feature Summary

• Supports bidirectional data transmission over a two-wire serial bus with I²C compatibility.
• Includes a 32-byte page write buffer to enhance write throughput efficiency.
• Features hardware write protection controlled by the WP pin to secure array data.
• Integrates Schmitt trigger inputs on SDA and SCL pins for improved noise spike suppression.

Memory IC Applications

• Personal communications devices requiring low-power non-volatile storage
• Data acquisition systems needing reliable parameter retention
• Industrial control applications utilizing I²C bus architectures

Memory IC Procurement Notes

Verify that the ordering suffix 'I' corresponds to the Industrial temperature range (-40°C to +85°C). Confirm the 'T' suffix indicates tape-and-reel packaging suitable for automated assembly. Ensure the 'MS' suffix matches the required 8-lead MSOP physical footprint. Cross-reference the specific revision level against the latest datasheet DS20001713P to confirm pinout and electrical characteristics remain unchanged.

Memory IC Selection Notes

Select this part when a 32-Kbit EEPROM with I²C interface is required for low-voltage operation down to 1.7V. Choose the MSOP package for surface-mount applications requiring a compact form factor. Consider the hardware write-protect feature if system security against accidental writes is critical. Verify that the 400 kHz clock speed meets the host controller's timing requirements at the intended operating voltage.

Memory IC Part Context

This component belongs to the 24XX32A family of serial EEPROMs manufactured by Microchip Technology. It shares functional similarities with the 24LC32A but differs in minimum operating voltage, allowing operation down to 1.7V compared to 2.5V for the LC variant. The family supports multiple package types including PDIP, SOIC, TSSOP, and DFN, providing flexibility for various PCB layout constraints.

Memory IC Replacement Considerations

The 24LC32AT-I/MS is a direct functional substitute within the same family, though it requires a minimum supply voltage of 2.5V instead of 1.7V. Other 24AA32A variants with different package suffixes (e.g., ST for TSSOP, P for PDIP) are pin-compatible replacements if the physical footprint allows.