AT93C46C-10SI-2.5

Memory IC Overview

The AT93C46C-10SI-2.5 is a 1-kbit serial electrically-erasable programmable read-only memory (EEPROM) manufactured by Microchip Technology. It provides 1024 bits of non-volatile storage organized as 64 words of 16 bits each. The device operates with a supply voltage range of 2.5V to 5.5V and features a 3-wire serial interface consisting of Chip Select (CS), Shift Clock (SK), Data Input (DI), and Data Output (DO). It supports a maximum clock rate of 2 MHz at 5V and includes Schmitt trigger inputs for noise suppression. The component is housed in an 8-lead JEDEC SOIC package and is rated for industrial temperature operation from -40°C to +85°C.

Memory IC Feature Summary

• Supports low-voltage and standard-voltage operation with a minimum supply of 2.5V
• Features self-timed write cycles that eliminate the need for separate erase operations
• Includes Schmitt trigger, filtered inputs designed for enhanced noise suppression
• Provides high reliability with specified endurance and long-term data retention capabilities

Memory IC Applications

• Industrial control systems requiring low-power serial memory
• Commercial applications necessitating compact EEPROM solutions
• Automotive grade and extended temperature environments

Memory IC Procurement Notes

Verify the specific ordering suffix '-2.5' confirms the 2.5V to 5.5V operating voltage range, distinct from the '-2.7' variant. Confirm the 'SI' designation corresponds to the 8-lead JEDEC SOIC package type. Ensure the '10' speed grade matches system timing requirements. Cross-reference the manufacturer datasheet revision to confirm pinout compatibility and electrical characteristics before integration.

Memory IC Selection Notes

Select this component when a 16-bit word organization is required rather than 8-bit. The 2.5V minimum supply voltage makes it suitable for lower power systems compared to 4.5V variants. The SOIC package offers space-saving surface-mount advantages over PDIP options. Verify that the 3-wire Microwire interface aligns with the host processor's communication capabilities and available I/O pins.

Memory IC Part Context

This part belongs to the AT93C46C series of 1-kbit serial EEPROMs. The series includes variants with different voltage ranges (-2.7, -2.5) and packages (PDIP, SOIC). The 'C' suffix typically denotes the specific generation or feature set within the 93C46 family. These devices are optimized for applications where low power consumption and small form factors are critical design constraints.

Memory IC Replacement Considerations

AT93C46C-10SI-2.7: Identical functionality but supports a higher minimum voltage of 2.7V.

Memory IC FAQ

What is the memory organization of the AT93C46C?

The device is organized as 64 words of 16 bits each, totaling 1024 bits.

How does the device handle write cycles?

It uses self-timed write cycles; no separate erase cycle is required before writing.

Is an Erase/Write Enable instruction required before programming?

Yes, the EWEN instruction must be executed first because the device defaults to the Erase/Write Disable state upon power-up.