25C320T-I/SN

Memory IC Overview

The Microchip Technology 25C320T-I/SN is a 32 Kbit (4096 x 8) serial Electrically Erasable PROM. It utilizes an SPI-compatible interface with a maximum clock frequency of 3 MHz and operates within a supply voltage range of 4.5 V to 5.5 V. The device supports industrial temperature ranges from -40 °C to +85 °C and features self-timed write cycles with a maximum duration of 5 ms.

Memory IC Feature Summary

• Integrated hardware write protection via the WP pin and STATUS register bits for data security
• Supports sequential reading and page writes up to 32 bytes per cycle
• Includes power-on data protection circuitry and a write enable latch mechanism

Memory IC Applications

• Microcontroller system configuration storage
• Calibration data retention in embedded devices
• Parameter logging for industrial sensors

Memory IC Procurement Notes

Verify that the specific ordering suffix matches the required package type and temperature grade. Confirm the voltage range compatibility with the target application, as this variant requires a minimum of 4.5 V. Ensure the design accounts for the specified write cycle time during initialization sequences.

Memory IC Selection Notes

Select this component when a 32 Kbit capacity is required with strict voltage constraints above 4.5 V. It is suitable for designs needing robust hardware write protection and standard SPI communication without the need for low-voltage operation below 2.7 V.

Memory IC Part Context

This part belongs to the 25XX320 family of serial EEPROMs. It shares architectural similarities with the 25AA320 and 25LC320 but is distinguished by its higher minimum operating voltage requirement. The datasheet notes it is not recommended for new designs, suggesting newer alternatives.

Memory IC Replacement Considerations

Public confirmed substitute part numbers: 25LC320-I/SN, 25AA320-I/SN.