25LC160C-I/ST

Overview

The Microchip Technology 25LC160C-I/ST is a 16 Kbit (2048 x 8-bit) Serial Electrically Erasable PROM accessed via an SPI-compatible serial bus. It operates within a voltage range of 2.5V to 5.5V and supports a maximum clock frequency of 10 MHz at VCC ≥ 4.5V. The device features a 16-byte page size, self-timed erase/write cycles with a maximum duration of 5 ms, and high reliability including over 1 million erase/write cycles and data retention exceeding 200 years. It is housed in an 8-lead TSSOP package and functions within an industrial temperature range of -40°C to +85°C.

Feature Summary

• Supports block write protection allowing selection of none, 1/4, 1/2, or all array segments.
• Includes built-in power-on/off data protection circuitry and a write enable latch.
• Features a hold pin to pause serial communication without resetting the sequence.

Applications

• Microcontroller system configuration storage
• Calibration parameter persistence
• Log data caching

Procurement Notes

Verify that the ordering suffix 'I' corresponds to the Industrial temperature grade (-40°C to +85°C) and 'ST' indicates the 8-lead TSSOP package. Confirm the 'C' designation ensures the 16-byte page size specification. Ensure the component meets RoHS compliance requirements for your assembly process.

Selection Notes

Select this part when a 16 Kbit capacity with SPI interface is required. Choose the 'C' variant specifically for its 16-byte page size limitation compared to the 32-byte 'D' version. Ensure the operating environment stays within the -40°C to +85°C range and supply voltage remains between 2.5V and 5.5V.

Part Context

This component belongs to the 25LC160C/D family of 16 Kbit Serial EEPROMs from Microchip Technology. It shares architectural similarities with other devices in the series but is distinguished by its specific voltage range, page size, and package type. It interfaces directly with standard SPI ports found in many popular microcontroller families.

Replacement Considerations

Public confirmed substitute part numbers: 25LC160C-E/ST, 25LC160C-I/SN, 25LC160C-I/P.

FAQ

How does the HOLD pin function during operation?

The HOLD pin suspends transmission to the device while in the middle of a serial sequence without requiring retransmission. Transitions on SI, SCK, and SO pins are ignored while held low.

What is the maximum internal write cycle time?

The self-timed erase and write cycles have a maximum duration of 5 ms.