25LC160-I/SN

Overview

The Microchip Technology 25C160-I/SN is a 16 Kbit (2048 x 8-bit) Serial Electrically Erasable PROM. It utilizes an SPI-compatible serial bus for communication, requiring SCK, SI, SO, and CS signals. The device operates within a supply voltage range of 4.5 V to 5.5 V with a maximum clock frequency of 3 MHz. It features self-timed erase and write cycles with a maximum duration of 5 ms. The component is housed in an 8-pin SOIC package and supports an industrial temperature range from -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 dedicated hold pin to pause serial transmission without resetting the sequence.
• Provides high reliability with specified endurance and long-term data retention capabilities.

Applications

• Microcontroller system data storage
• Configuration parameter storage
• Calibration value retention

Procurement Notes

Verify that the specific ordering suffix matches the required package type and temperature grade. Confirm the voltage range requirements align with the 4.5 V to 5.5 V specification. Check for any applicable product change notifications or end-of-life notices associated with this part number before finalizing procurement plans.

Selection Notes

Select this component when a 5V-only supply environment is present. Ensure the design accommodates the 3 MHz maximum clock speed limitation. Consider alternative models if lower voltage operation or higher speed interfaces are required for the target application.

Part Context

This part belongs to the 25XX160 family of 16 Kbit Serial EEPROMs manufactured by Microchip Technology. It shares architectural similarities with the 25AA160 and 25LC160 variants but is distinguished by its specific 4.5 V to 5.5 V operating voltage range. The 'I' designation indicates industrial temperature rating, while 'SN' denotes the 8-lead SOIC package format.

Replacement Considerations

Public confirmed substitute part numbers: 25C160-E/SN, 25C160-I/P, 25LC160-I/SN, 25AA160-I/SN.

FAQ

How does the HOLD pin function during serial communication?

The HOLD pin suspends transmission mid-sequence without resetting the serial pointer. It must be held low while SCK is low to pause, and brought high while SCK is low to resume.

What is the purpose of the WP pin in conjunction with the Status register?

The WP pin works with the WPEN bit in the Status register to control hardware write protection. When WPEN is high and WP is low, writes to the nonvolatile bits in the Status register are disabled.