24AA32AF-I/P

Memory IC Overview

The Microchip Technology 24AA32AF-I/P is a 32 Kbit Electrically Erasable PROM organized as a single block of 4K x 8-bit memory. It features a 2-wire I2C compatible serial interface with a maximum clock frequency of 400 kHz for VCC ≥ 2.5V, and 100 kHz for VCC < 2.5V. The device operates on a single supply voltage ranging from 1.7V to 5.5V. It supports page write operations with a buffer size of up to 32 bytes and includes hardware write-protect functionality for the upper quarter of the array (addresses C00h-FFFh). The component is housed in an 8-lead PDIP package and is rated for industrial temperature operation from -40°C to +85°C.

Memory IC Feature Summary

• Supports bidirectional data transfer via a 2-wire serial bus protocol compatible with I2C standards.
• Includes Schmitt trigger inputs on SDA and SCL pins to provide noise suppression and improved spike filtering.
• Features output slope control designed to eliminate ground bounce during signal transitions.
• Provides hardware write protection for the upper quarter of the memory array when the WP pin is 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 that the ordering suffix matches the required package type and temperature grade. Confirm the specific voltage range requirements align with the 1.7V to 5.5V operational specification. Ensure compatibility with the I2C bus timing parameters, particularly regarding clock frequencies at different supply voltages. Check for any specific factory programming requirements if custom data initialization is needed prior to deployment.

Memory IC Selection Notes

Select this component for designs requiring robust noise immunity due to integrated Schmitt triggers. The wide supply voltage range allows flexibility in power management strategies. Consider the page write capability for efficient bulk data updates. Verify that the physical package dimensions fit the available PCB space. Ensure the application does not require writing to the protected upper memory region without managing the WP pin state.

Memory IC Part Context

This part belongs to the 24AA32AF/24LC32A family of 32 Kbit Serial EEPROMs. It shares functional similarities with other members like the 24AA32AFT-I/ST but differs in packaging and specific electrical characteristics such as access times and operating voltage thresholds. The 'I' suffix denotes the industrial temperature range, distinguishing it from automotive or commercial variants within the same product line.

Memory IC Replacement Considerations

Direct substitutes include other 24AA32AF variants with different packages, such as 24AA32AF-I/SN or 24AA32AF-I/MS. Cross-family replacements like the 24LC32AF series are functionally similar but may have different minimum operating voltage requirements.