25LC160/SN

Overview

The Microchip Technology 25LC160/SN is a 16 Kbit Serial Electrically Erasable PROM featuring a 2048 x 8-bit organization. It operates via an SPI-compatible serial bus with SCK, SI, SO, and CS signals. The device supports a maximum clock frequency of 2 MHz at VCC voltages between 2.5V and 4.5V, and up to 3 MHz at 4.5V to 5.5V. It functions within the Industrial temperature range of -40°C to +85°C. Key electrical characteristics include a typical standby current of 500 nA, a maximum write cycle time of 5 ms, and data retention exceeding 200 years.

Feature Summary

• Supports sequential read operations for efficient data retrieval across memory addresses.
• Includes built-in power on/off data protection circuitry to prevent inadvertent writes during voltage transitions.
• Features a Hold pin that allows pausing serial communication without resetting the sequence.

Applications

• Interfacing directly with microcontrollers possessing built-in SPI ports.
• Data storage in systems requiring non-volatile configuration parameters.
• Applications utilizing discrete I/O lines programmed for software-based SPI communication.

Procurement Notes

Verify the specific ordering suffix against the manufacturer's Product Identification System to confirm package type and temperature range. Ensure the selected variant matches the required supply voltage and operating conditions for your design. Confirm compliance with RoHS standards if applicable. Check for any errata sheets associated with the silicon revision before finalizing procurement specifications.

Selection Notes

Select this component for designs requiring low-power CMOS technology with high reliability. Consider the 2 MHz clock speed and 16-byte page write capability for system timing requirements. Evaluate the block write protection features if data integrity is critical. Note that this series is not recommended for new designs; verify if newer alternatives like the 25LC160A/B are more suitable for long-term production.

Part Context

This part belongs to the 25XX160 family of 16 Kbit Serial EEPROMs from Microchip Technology. The 'SN' suffix indicates an 8-lead Plastic Small Outline (SOIC) package with a 150 mil body width. The 'I' designation specifies the Industrial temperature range. This family shares common architecture with the 25AA160 and 25C160 variants, differing primarily in voltage ranges and temperature ratings.

Replacement Considerations

Microchip recommends using 25AA160A/B or 25LC160A/B instead of this older generation for new designs. Verify compatibility with updated datasheets and potential feature enhancements in successor models before substituting.