25AA160C-I/ST

Memory IC Overview

The Microchip Technology 25AA160C-I/ST is a 16 Kbit Serial Electrically Erasable PROM featuring a 2048 x 8-bit organization and 16-byte page size. It operates on an SPI-compatible serial bus with a maximum clock frequency of 10 MHz at VCC ≥ 4.5V, scaling to 3 MHz at 1.8V ≤ VCC < 2.5V. The device supports a supply voltage range of 1.8V to 5.5V and functions within an industrial temperature range of -40°C to +85°C. It utilizes low-power CMOS technology with standby current as low as 1 µA.

Memory IC Feature Summary

• Supports hardware write protection via the WP pin combined with the WPEN bit in the STATUS register.
• Includes built-in power-on/off data protection circuitry and a write enable latch to prevent inadvertent writes.
• Features a HOLD input that allows suspension of serial communication without resetting the sequence.

Memory IC Applications

• Microcontroller systems requiring non-volatile data storage
• Industrial control applications operating in wide temperature ranges
• Embedded systems utilizing SPI interfaces for configuration storage

Memory IC Procurement Notes

Verify the specific suffix 'I/ST' corresponds to the Industrial temperature grade (-40°C to +85°C) and TSSOP-8 package. Confirm the 'C' designation indicates the 16-byte page size variant rather than the 32-byte 'D' version. Ensure compatibility with the required supply voltage range of 1.8V to 5.5V for your target application.

Memory IC Selection Notes

Select this component when a 16 Kbit capacity with 16-byte page write capability is required. It is suitable for designs needing low standby power and robust write protection features. Consider the 25LC160C variant if the minimum operating voltage must be raised to 2.5V, or the 25AA160D variant if 32-byte pages are preferred.

Memory IC Part Context

This part belongs to the 25XX160C/D family of 16 Kbit Serial EEPROMs from Microchip Technology. The 'AA' prefix denotes the 1.8V compatible voltage range, while 'C' specifies the 16-byte page architecture. It shares functional similarities with the 25LC160C but differs in minimum operating voltage specifications.

Memory IC Replacement Considerations

The 25LC160C-I/ST serves as a direct functional substitute, provided the system voltage does not drop below 2.5V. Other 16 Kbit SPI EEPROMs may require verification of page size (16 vs 32 bytes) and voltage level compatibility before replacement.