25C320-I/P

Memory IC Overview

The Microchip Technology 25C320-I/P is a 32 Kbit (4096 x 8 bit) serial Electrically Erasable PROM. It features 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 is housed in an 8-pin PDIP package.

Memory IC Feature Summary

• Supports block write protection for none, one-quarter, one-half, or all array segments
• Includes built-in power-on/off data protection circuitry and a write enable latch
• Provides hardware write protection via the WP pin controlled by the STATUS register

Memory IC Applications

• Microcontroller system data storage
• Industrial embedded applications requiring non-volatile memory
• Automotive electronics operating at elevated temperatures

Memory IC Procurement Notes

Verify the specific suffix 'I' confirms the Industrial temperature grade (-40°C to +85°C). Confirm the '/P' designation indicates the 8-pin PDIP package type. Ensure the design utilizes a 4.5V to 5.5V supply rail, as this variant does not support lower voltages compared to other family members.

Memory IC Selection Notes

Select this component when a higher clock speed of 3 MHz is required compared to the 1 MHz limit of the 25AA320 series. It is suitable for designs strictly operating between 4.5 V and 5.5 V. Note that this datasheet recommends using the 25AA320A or 25LC320A for new designs.

Memory IC Part Context

This part belongs to the 25XX320 family alongside the 25AA320 and 25LC320. While functionally similar, the 25C320 is distinguished by its wider voltage tolerance starting at 4.5 V and a faster maximum clock frequency of 3 MHz. It shares the same 32 Kbit capacity and SPI protocol structure.

Memory IC Replacement Considerations

Public confirmed substitutes include the 25LC320-I/P and 25AA320-I/P, provided voltage and speed requirements are met.