AT24C32AY1-10YI-2.7

Memory IC Overview

The AT24C32AY1-10YI-2.7 is a 32Kbit (4096 x 8) serial electrically erasable and programmable read-only memory (EEPROM) manufactured by Microchip Technology. It operates within a supply voltage range of 2.7V to 5.5V and supports I2C bus clock frequencies up to 400 kHz at 2.5V or higher, and 100 kHz at 1.8V. The device features a 32-byte page write mode with a self-timed write cycle of 5 ms maximum. It includes hardware data protection via a Write Protect pin and offers high reliability with 1 million write cycles endurance and 100-year data retention.

Memory IC Feature Summary

• Supports bidirectional data transfer over a 2-wire serial interface with Schmitt trigger filtered inputs for noise suppression.
• Provides hardware data protection through a dedicated Write Protect pin that inhibits all write operations when connected high.
• Enables efficient data storage using a 32-byte page write mode that allows partial page writes.

Memory IC Applications

• Industrial and commercial applications requiring low power and low voltage operation
• Systems utilizing microcontrollers for non-volatile data storage
• Embedded devices needing hardware-level data security

Memory IC Procurement Notes

Verify the specific ordering suffix matches the required voltage option (-2.7 for 2.7V to 5.5V operation). Confirm the package type corresponds to the Miniature Array Package (MAP) designation Y1. Ensure the temperature grade aligns with industrial requirements (-40°C to 85°C). Cross-reference the manufacturer part number against official Microchip documentation to confirm current production status and lead times.

Memory IC Selection Notes

Select this component for designs requiring compact surface-mount storage with robust noise immunity. The MAP package offers space-saving benefits compared to standard SOIC or PDIP options. Consider the 2.7V voltage variant if the system operates strictly above 2.7V, ensuring compatibility with the specified clock rates. Evaluate the need for hardware write protection features in the target application environment.

Memory IC Part Context

This EEPROM belongs to the AT24C32A/64A family, which provides serial electrically erasable and programmable read-only memory. The family is optimized for industrial and commercial applications where low power consumption is critical. Devices in this series support cascading up to eight units on a single 2-wire bus, facilitating scalable memory architectures in embedded systems.

Memory IC Replacement Considerations

Compatible substitutes include other AT24C32 variants from Microchip such as AT24C32AN-10SI-2.7 (SOIC package) or AT24C32A-10TI-2.7 (TSSOP package), provided the package footprint and electrical specifications match the design requirements.