25AA160D-E/ST

Memory IC Overview

The Microchip Technology 25AA160D-E/ST is a 16 Kbit Serial Electrically Erasable PROM featuring a 2048 x 8-bit organization and a 32-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 5 MHz at 2.5V ≤ VCC < 4.5V and 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 automotive temperature range of -40°C to +125°C. It is housed in an 8-lead TSSOP package.

Memory IC Feature Summary

• Supports sequential read operations and self-timed erase/write cycles with a maximum duration of 5 ms.
• Includes built-in write protection mechanisms such as power-on/off data protection, a write enable latch, and a dedicated write-protect pin.
• Features block write protection allowing configuration to protect none, one-quarter, one-half, or the entire memory array.

Memory IC Applications

• Automotive electronic systems requiring extended temperature operation
• Microcontroller-based data logging applications
• Storage of calibration parameters and configuration settings

Memory IC Procurement Notes

Verify the specific ordering suffix against official documentation to confirm package type and temperature grade. Confirm that the 'E' designation aligns with required automotive operating conditions. Ensure compatibility with system voltage levels across the full 1.8V to 5.5V range. Check for RoHS compliance status if environmental regulations apply to the final assembly.

Memory IC Selection Notes

Select this component when automotive-grade reliability and wide voltage operation are required. The 32-byte page size offers efficient bulk writing compared to smaller page variants. Ensure the host microcontroller supports SPI Mode 0,0 or Mode 1,1 timing requirements. Verify that the TSSOP package dimensions fit the available PCB real estate constraints.

Memory IC Part Context

This part belongs to the 25XX160C/D family of 16 Kbit Serial EEPROMs from Microchip Technology. The 'D' variant specifically denotes a 32-byte page size, distinguishing it from the 16-byte 'C' version. The 'E' suffix indicates automotive qualification, while 'I' denotes industrial grade. The 'ST' suffix identifies the 8-lead Thin Shrink Small Outline Package.

Memory IC Replacement Considerations

The 25AA160D-I/ST serves as the industrial-grade equivalent with identical electrical characteristics but a narrower temperature range. The 25LC160D-E/ST is a compatible alternative if the minimum operating voltage can be raised to 2.5V. Cross-reference datasheets to ensure pinout and instruction set compatibility before substitution.