AT93C46A-10SC-2.7

Memory IC Overview

The AT93C46A-10SC-2.7 is a serial electrically-erasable programmable read-only memory (EEPROM) providing 1024 bits of storage, organized as 64 words of 16 bits each. It operates with supply voltages ranging from 2.7V to 5.5V and supports clock rates up to 2 MHz at 5V. The device features a three-wire serial interface consisting of Chip Select (CS), Shift Clock (SK), Data Input (DI), and Data Output (DO). It includes self-timed write cycles with a maximum duration of 10 ms and offers high reliability with an endurance of 1 million write cycles and data retention of 100 years.

Memory IC Feature Summary

• Three-wire serial interface for simplified connection
• Self-timed write cycle eliminates separate erase requirement
• High reliability with extended endurance and retention specifications

Memory IC Applications

• Industrial applications requiring low-power operation
• Commercial systems needing low-voltage functionality
• Automotive grade environments with extended temperature ranges

Memory IC Procurement Notes

Verify the specific voltage variant matches system requirements, as the -2.7 suffix indicates a 2.7V minimum operating threshold compared to the 1.8V variant. Confirm package type compatibility, as the SC suffix denotes an 8-lead JEDEC SOIC package. Ensure the industrial temperature range (-40°C to +85°C) aligns with environmental conditions. Check for lead-free/halogen-free status if required by regulatory standards. Validate that the 2 MHz clock rate is sufficient for the host processor speed.

Memory IC Selection Notes

Select this component when a compact serial EEPROM is needed for storing configuration data or small datasets in space-constrained designs. The three-wire interface reduces pin count compared to parallel alternatives. Consider the 2.7V minimum voltage constraint if the system operates near lower supply limits. The 64-word capacity is suitable for parameter storage rather than large data buffers. Evaluate the 10 ms write time against application timing constraints.

Memory IC Part Context

This part belongs to the AT93C46A family of serial EEPROMs manufactured by Microchip Technology (formerly Atmel). The family offers various voltage options and package types to suit different design needs. The AT93C46A specifically provides 1K-bit density, balancing cost and performance for embedded memory tasks. It is designed for use in microcontroller-based systems where non-volatile storage is essential.

Memory IC Replacement Considerations

Compatible substitutes include other AT93C46 variants with matching voltage and package codes, such as AT93C46A-10SI-2.7 for SOIC packages. Cross-referencing with AT93C46B series may require verification of instruction set compatibility. Ensure any replacement maintains the same 64x16 bit organization and three-wire interface protocol.