93AA46A-I/SN

Memory IC Overview

The Microchip Technology 93AA46A-I/SN is a 1Kbit low-voltage serial Electrically Erasable PROM (EEPROM) featuring an industry-standard 3-Wire Microwire interface. It utilizes advanced CMOS technology for low-power operation and supports a supply voltage range of 1.8V to 5.5V. The device offers a fixed 128 x 8-bit organization without an ORG pin, ensuring dedicated 8-bit communication. It provides high endurance with 1,000,000 erase/write cycles and data retention exceeding 200 years. Operating within the industrial temperature range of -40°C to +85°C, it is housed in an 8-lead SOIC package.

Memory IC Feature Summary

• Supports self-timed erase and write cycles including auto-erase functionality before write operations.
• Includes power-on/off data protection circuitry to prevent data corruption during voltage fluctuations.
• Features a Ready/Busy status signal output on the DO pin to monitor programming progress.
• Enables sequential read functions when Chip Select remains active.

Memory IC Applications

• Low-power nonvolatile memory storage
• Industrial control systems requiring robust data retention
• Embedded applications needing simple serial interface configuration

Memory IC Procurement Notes

Verify that the specific ordering suffix matches the required package type and temperature grade. Confirm RoHS compliance status as per current manufacturer documentation. Ensure the design accounts for the fixed 8-bit organization inherent to the 'A' variant. Check for any recent Product Change Notifications regarding packaging or assembly sites.

Memory IC Selection Notes

Select this component for designs requiring a dedicated 8-bit word size without external configuration pins. It is suitable for applications operating between 1.8V and 5.5V where low standby current is critical. Consider the 93AA46B if 16-bit organization is needed, or the 93AA46C if software-selectable word sizes are preferred.

Memory IC Part Context

This part belongs to the 93XX46A/B/C series of 1Kbit Microwire compatible serial EEPROMs from Microchip Technology. The series includes variants with different word sizes and voltage ranges, such as the 93LC46A and 93C46A. The 93AA46A specifically targets low-voltage applications with a fixed 8-bit architecture.

Memory IC Replacement Considerations

Direct substitutes include other 93AA46A variants in different packages, such as 93AA46A-I/P (PDIP) or 93AA46AT-I/MC (DFN). Cross-series replacements like 93AA46B require logic changes due to 16-bit organization differences.