24AA32A-I/WF16K

Memory IC Overview

The Microchip Technology 24AA32A-I/WF16K is a 32-Kbit Electrically Erasable PROM organized as a single block of 4K x 8-bit memory. It features a two-wire serial interface compatible with I2C™, supporting clock frequencies up to 400 kHz at VCC ≥ 2.5V and 100 kHz at VCC < 2.5V. 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, and Schmitt trigger inputs for noise suppression.

Memory IC Feature Summary

• Supports bidirectional data transfer via a two-wire serial bus protocol with I2C compatibility.
• Includes a 32-byte page write buffer to optimize write operations across memory pages.
• Features hardware write protection controlled by the WP pin to inhibit array writes when tied high.

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 the specific package suffix 'WF16K' against official Microchip documentation, as standard datasheets list packages such as MSOP, SOIC, TSSOP, DFN, and SOT-23. Confirm that the ordering suffix corresponds to the intended physical footprint and tape-and-reel configuration. Ensure the industrial temperature range (-40°C to +85°C) meets system requirements. Cross-reference the part number with the latest device selection table to confirm availability and exact pinout definitions.

Memory IC Selection Notes

Select this component for designs requiring 32-Kbit EEPROM capacity with I2C connectivity. The 24AA32A variant supports operation down to 1.7V, suitable for low-voltage systems where the 24LC32A (minimum 2.5V) would be unsuitable. Consider the 32-byte page write buffer size when designing software to prevent page rollover errors. Ensure the application can handle the maximum 5 ms self-timed write cycle duration before initiating subsequent commands.

Memory IC Part Context

This device belongs to the 24XX32A family of 32-Kbit serial EEPROMs manufactured by Microchip Technology. The family shares identical functional specifications but differs in voltage ranges and temperature grades. The 24AA32A specifically targets low-voltage applications starting at 1.7V, whereas the 24LC32A requires a minimum of 2.5V. Both variants support the same I2C interface and memory organization.

Memory IC Replacement Considerations

The 24LC32A serves as a functional substitute within the same family, provided the system voltage remains above 2.5V. Other 32-Kbit I2C EEPROMs from different manufacturers may require verification of pin compatibility, voltage levels, and I2C timing parameters.