AT93C46A-10SI-1.8

Memory IC Overview

The AT93C46A-10SI-1.8 is a 1Kbit (64 x 16) serial EEPROM manufactured by Microchip Technology, housed in an 8-lead JEDEC SOIC package. It operates within a supply voltage range of 1.8V to 5.5V and supports a clock frequency up to 2 MHz at 5V. The device features a three-wire serial interface with self-timed write cycles of 10 ms maximum. It is rated for industrial temperatures from -40°C to +85°C.

Memory IC Feature Summary

• Supports low-voltage operation down to 1.8V alongside standard voltage ranges.
• Features a simple three-wire serial interface compatible with Microwire protocols.
• Includes self-timed erase and write cycles without requiring separate erase steps.
• Provides high reliability with one million write cycle endurance and 100-year data retention.

Memory IC Applications

• Industrial and commercial systems requiring low-power memory solutions
• Microcontroller peripheral storage for configuration data
• Automotive grade applications utilizing extended temperature variants

Memory IC Procurement Notes

Verify the specific ordering suffix '-1.8' confirms the 1.8V to 5.5V operating range rather than the 2.7V variant. Confirm the 'SI' designation corresponds to the 8-lead JEDEC SOIC package. Ensure the component meets RoHS compliance requirements if applicable to your manufacturing standards.

Memory IC Selection Notes

Select this part when a 1Kbit non-volatile storage solution is needed with a minimal pin count. The 1.8V minimum supply voltage makes it suitable for battery-powered or low-voltage logic systems. The SOIC package offers space-saving surface-mount capabilities compared to through-hole alternatives.

Memory IC Part Context

This component belongs to the AT93C46A family of serial EEPROMs. It shares functional similarities with other devices in the series but differs in package type and voltage specifications. The AT93C46A provides a cost-effective alternative to parallel EEPROMs while maintaining data integrity through dedicated write enable instructions.

Memory IC Replacement Considerations

Direct replacements include the AT93C46A-10SU-1.8 for the same functionality in a lead-free/halogen-free SOIC package. Other package options within the same electrical specification are available as AT93C46A-10PI-1.8 (PDIP) and AT93C46A-10TI-1.8 (TSSOP).

Memory IC FAQ

What is the maximum clock frequency for the AT93C46A-10SI-1.8?

The device supports a clock rate of up to 2 MHz when operating at 5V.

How does the device handle write protection?

The part automatically enters an Erase/Write Disable state upon power-up. An EWEN instruction must be executed to enable programming, which remains active until an EWDS instruction is issued or power is removed.