25LC160D-H/SN

Overview

The Microchip Technology 25LC160D-H/SN is a 16 Kbit Serial Electrically Erasable PROM (EEPROM) organized as 2,048 x 8 bits. It features an SPI-compatible serial bus with a maximum clock frequency of 5 MHz and supports page writes of 32 bytes. The device operates within a supply voltage range of 2.5 V to 5.5 V and is housed in an 8-lead SOIC package. It supports an extended temperature range from -40°C to +150°C.

Feature Summary

• Supports Serial Peripheral Interface (SPI) compatible communication with separate data input and output lines.
• Includes built-in write protection mechanisms such as power-on/off data protection and a hardware write-protect pin.
• Features self-timed erase and write cycles that automatically reset the write enable latch upon completion.

Applications

• Data storage for system configuration parameters
• Calibration data retention in industrial sensors
• Non-volatile memory for microcontroller-based embedded systems

Procurement Notes

Verify the specific suffix 'H' confirms the extended temperature rating up to +150°C and 'SN' indicates the 8-lead SOIC package. Confirm RoHS compliance status through official documentation before integration. Ensure the design accounts for the 6 ms maximum internal write cycle time during operation.

Selection Notes

Select this component when high-temperature reliability is required alongside standard SPI interface compatibility. The 16 Kbit density suits applications needing moderate non-volatile storage without complex addressing. Verify that the 32-byte page size aligns with the application's write granularity requirements to optimize performance.

Part Context

This part belongs to the 25LCXXX family of mid-density serial EEPROMs from Microchip Technology. It shares architectural similarities with other devices in the series but is distinguished by its specific density, package type, and extended temperature capabilities defined by its ordering suffixes.

Replacement Considerations

Direct substitutes include other 25LC160 variants with different temperature grades or packages, such as 25LC160C-H/SN or 25LC160D-I/SN, provided the electrical characteristics and pinout remain compatible with the existing design.

FAQ

How does the HOLD pin function during serial communication?

The HOLD pin allows the user to pause serial communication without resetting the sequence. When pulled low while SCK is low, it places inputs in a high-impedance state until pulled high again.

What is the purpose of the Write Enable Latch?

The Write Enable Latch must be set via the WREN instruction before any write operation can occur. It resets automatically after power-up, successful write execution, or WRDI instruction to prevent inadvertent writes.