24LC32A-E/P

Memory IC Overview

The Microchip Technology 24LC32A-E/P 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™ standards, supporting maximum clock frequencies of 100 kHz and 400 kHz. The device operates on a single supply voltage ranging from 2.5V to 5.5V. It includes hardware write-protect capabilities, Schmitt trigger inputs for noise suppression, and output slope control to eliminate ground bounce. The component is qualified under AEC-Q100 standards and supports up to eight devices on the same bus via functional address lines.

Memory IC Feature Summary

• Supports bidirectional data transmission using a standard two-wire serial interface protocol.
• 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.
• Provides high reliability with over one million erase/write cycles and extended data retention.

Memory IC Applications

• Data acquisition systems requiring non-volatile storage
• Personal communications devices needing low-power memory
• Industrial control applications utilizing I2C communication

Memory IC Procurement Notes

Verify that the specific part number corresponds to the Extended temperature range (-40°C to +125°C) and the PDIP package style. Confirm AEC-Q100 qualification requirements are met for automotive or high-reliability contexts. Ensure the operating voltage supply matches the 2.5V minimum specification for the LC series. Check for RoHS compliance status if environmental regulations apply to the final assembly.

Memory IC Selection Notes

Select this component when an I2C-compatible EEPROM with 32-Kbit capacity is required for industrial or automotive environments. The Extended temperature grade ensures functionality in harsh thermal conditions compared to Industrial grade variants. The PDIP package is suitable for through-hole mounting techniques. Consider the 400 kHz clock speed for faster data transfer rates within the I2C bus constraints.

Memory IC Part Context

This part belongs to the 24LC32A family of 32-Kbit serial EEPROMs manufactured by Microchip Technology. It shares architectural similarities with the 24AA32A but differs in minimum operating voltage specifications. The family utilizes a standardized 8-pin package configuration for various surface mount and through-hole implementations, maintaining consistent pinouts across different package types like SOIC, MSOP, and TSSOP.

Memory IC Replacement Considerations

The 24LC32A-I/P serves as the Industrial temperature range equivalent within the same package. Cross-reference with other 24LC32A variants such as 24LC32A-E/SN for surface mount alternatives. Verify compatibility with existing I2C bus addressing schemes when substituting with other 32-Kbit EEPROM models from different manufacturers.

Memory IC FAQ

How does the hardware write-protect feature function?

The WP pin allows users to write-protect the entire array. When tied to VCC, write operations are inhibited, while read operations remain unaffected. When tied to VSS, write protection is disabled.

What is the maximum clock frequency supported?

The device supports a maximum clock frequency of 400 kHz when the supply voltage is between 2.5V and 5.5V. At lower voltages below 2.5V, the frequency is limited to 100 kHz.

Can multiple devices be connected to the same bus?

Yes, up to eight 24LC32A devices can be connected to the same I2C bus using the functional address lines A0, A1, and A2 to select specific devices.