25AA160CT-I/MS

Memory IC Overview

The Microchip Technology 25AA160CT-I/MS is a 16 Kbit (2048 x 8-bit) Serial Electrically Erasable PROM. It utilizes an SPI-compatible serial bus for communication, supporting clock frequencies up to 10 MHz. The device operates within a supply voltage range of 1.8V to 5.5V and features a 16-byte page size. It is housed in an 8-lead MSOP package and supports industrial temperature ranges from -40°C to +85°C.

Memory IC Feature Summary

• Supports high-speed SPI communication with clock frequencies up to 10 MHz
• Includes hardware write protection via WP pin and software block protection
• Features self-timed erase and write cycles with internal write cycle time of 5 ms max
• Provides data retention exceeding 200 years and endurance greater than 1 million erase/write cycles

Memory IC Applications

• Microcontroller system data storage
• Configuration parameter storage
• Calibration data retention
• Device identification information storage

Memory IC Procurement Notes

Verify the specific suffix 'T' indicates tape and reel packaging when ordering. Confirm the 'I' designation matches the required industrial temperature range of -40°C to +85°C. Ensure the 'C' variant with 16-byte page size aligns with application buffer requirements rather than the 'D' variant's 32-byte page. Cross-reference the MSOP package dimensions against PCB layout constraints.

Memory IC Selection Notes

Select this component for applications requiring low-voltage operation down to 1.8V. Choose the 'C' version specifically if the application logic relies on 16-byte page boundaries. Consider the MSOP package for space-constrained surface-mount designs. Verify that the host microcontroller supports the required SPI mode and timing parameters for reliable data transfer at the target clock speed.

Memory IC Part Context

This part belongs to the 25XX160C/D family of 16 Kbit Serial EEPROMs. The 'AA' prefix denotes 1.8V to 5.5V operation, distinguishing it from the 'LC' series which requires 2.5V minimum. The 'C' suffix specifies a 16-byte page size, whereas 'D' variants offer 32-byte pages. This family shares common instruction sets and functional descriptions across different package options.

Memory IC Replacement Considerations

25AA160AT-I/MS

Memory IC 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, the SI, SCK, and SO pins enter a high-impedance state. Communication resumes when HOLD is brought high while SCK is low.

What is the maximum internal write cycle time?

The internal write cycle time is a maximum of 5 ms. During this period, the device ignores access attempts to the memory array.

How is the write enable latch managed?

The write enable latch must be set using the WREN instruction before any write operation. It is automatically reset after power-up, upon successful execution of WRDI, WRSR, or WRITE instructions.