S-93C66BR0I-J8T1U

Overview

The S-93C66BR0I-J8T1U is a 4 K-bit (256-word x 16-bit) 3-wire serial EEPROM manufactured by ABLIC Inc. It operates within a voltage range of 1.8 V to 5.5 V for reading and 2.7 V to 5.5 V for writing, supporting clock frequencies up to 2.0 MHz at higher voltages. The device utilizes Microwire bus communication and features sequential read capabilities with automatic address incrementing in 16-bit blocks. It offers an endurance of 1 million cycles per word and data retention of up to 100 years at 25°C. The component is housed in an 8-pin SOP package.

Feature Summary

• Supports sequential read operations with automatic address incrementing across the memory space.
• Includes built-in protection against erroneous write operations caused by noise or incorrect clock counts.
• Features a low power supply voltage detector that automatically disables writes during brown-out conditions.

Applications

• Consumer electronics
• Office equipment
• Communications devices

Procurement Notes

Verify the specific ordering suffix J8T1U to confirm the 8-pin SOP package and environmental compliance status. Confirm the current lifecycle status with the manufacturer, as availability may vary. Ensure the design accommodates the required write voltage threshold of 2.7 V minimum for programming operations.

Selection Notes

Select this part when a 4 K-bit capacity is required alongside a 3-wire Microwire interface. Consider the 2.0 MHz maximum clock frequency for high-speed applications operating between 4.5 V and 5.5 V. Verify that the system can maintain the minimum 2.7 V supply during write cycles to ensure reliable data storage.

Part Context

This component belongs to the S-93C46B/56B/66B series of 3-wire serial E2PROMs from ABLIC Inc. The series differentiates models primarily by memory capacity: 1 K-bit, 2 K-bit, and 4 K-bit. All variants share identical pinouts, instruction sets, and electrical characteristics, differing only in address bit requirements and total word count.

Replacement Considerations

S-93C66BD0I-J8T1G

FAQ

How does the device handle write operations during low voltage?

A built-in detector cancels write instructions and automatically sets the device to write disable mode if the supply voltage drops below approximately 1.75 V.

What is the initial delivery state of the memory?

All addresses are initialized to FFFFh upon delivery.