S-93C86BD4I-T8T1U

Overview

The S-93C86BD4I-T8T1U is a 16 K-bit (1024-word × 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 features sequential read capabilities, write protection during low power supply conditions, and endurance of 1 million cycles per word. Data retention is specified as 100 years at +25°C and 20 years at +85°C. It is housed in an 8-pin TSSOP package.

Feature Summary

• Supports Microwire bus communication with sequential read functionality for automatic address incrementing.
• Includes built-in low power supply voltage detection to automatically cancel write instructions and set write disable state.
• Features a clock pulse monitoring circuit to prevent erroneous write operations caused by noise or double counting.
• Provides data retention of up to 100 years at room temperature and endurance of 1 million write cycles.

Applications

• Consumer electronics
• Office equipment
• Communications devices

Procurement Notes

Verify the current lifecycle status before design implementation, as this component may be marked as Not Recommended for New Designs (NRND). Confirm that the specific ordering suffix matches the required package type and electrical characteristics. Ensure compatibility with the host system's voltage levels and interface timing requirements. Check for any alternative recommended parts if long-term availability is critical for the project timeline.

Selection Notes

Select this component when a non-volatile memory solution with low current consumption and wide operating voltage range is required. It is suitable for applications needing 16 K-bit storage with 3-wire serial interface compatibility. Consider the write time and verify operation requirements for system timing constraints. Ensure the application environment stays within the specified operating temperature range of -40°C to +85°C.

Part Context

This part belongs to the S-93C86B series of 3-wire serial E2PROMs from ABLIC Inc. The series offers various memory capacities and packaging options. The S-93C86B specifically provides 16 K-bit capacity with high-speed operation capabilities. It is designed for general electronic devices and supports standard Microwire protocol for efficient data transfer in embedded systems.

Replacement Considerations

Check for direct pin-to-pin replacements within the S-93C86B family or other ABLIC EEPROMs with compatible 3-wire interfaces. Verify that any substitute maintains the same memory organization, voltage ranges, and package dimensions. Consult ABLIC documentation for officially recommended alternatives if this part is discontinued.

FAQ

How does the S-93C86BD4I-T8T1U handle write operations during low voltage conditions?

The device includes a built-in detector that cancels write instructions and automatically sets the write disable state when the power supply voltage drops below approximately 1.75 V. Writing resumes only after the voltage rises above 2.05 V and a write enable instruction is sent.

What is the purpose of the TEST pin on the 8-pin TSSOP package?

The TEST pin is disconnected from the internal circuit during normal operation. It can be connected to GND or VCC, but leaving it unconnected does not affect performance as long as absolute maximum ratings are not exceeded.

Can the DI and DO pins be directly connected for a 3-wire interface?

Direct connection between DI and DO pins may cause data collisions. To prevent malfunction, it is recommended to connect these pins via a resistor ranging from 10 kΩ to 100 kΩ, allowing the CPU's data output to take precedence.