25AA320-I/P EEPROM Memory IC Equivalent & Substitute Parts

Part Overview

The 25AA320-I/P is a 32Kbit Serial Peripheral Interface (SPI) EEPROM memory integrated circuit manufactured by Microchip Technology. This non-volatile memory device operates at 1 MHz clock frequency and is housed in an 8-pin DIP package suitable for through-hole mounting applications. The device maintains active product status with full RoHS3 compliance and unlimited moisture sensitivity rating. Substitute parts are identified when equivalent memory capacity, interface protocol, and package configuration are required while accommodating different operational specifications or inventory availability.

Substiute Parts

25AA320-I/P

Microchip TechnologyIn Stock: 127425AA320-I/P Datasheet

Current PartRFQ

25LC320A-I/P

Microchip TechnologyIn Stock: 235425LC320A-I/P Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 25AA320-I/P is determined by the following critical parameters:

• Memory capacity must remain 32Kbit with 4K x 8 organization
• SPI interface protocol is mandatory for circuit compatibility
• 8-DIP through-hole package configuration must be maintained
• Write cycle time of 5ms is standard across the product family
• Operating temperature range of -40°C ~ 85°C must be supported
• RoHS3 compliance and unlimited MSL rating are required

The 25LC320A-I/P qualifies as a direct substitute based on these criteria. Variations in clock frequency and minimum supply voltage do not preclude substitution when the application circuit design accommodates the substitute device specifications.

Parameter Comparison

Engineering Selection Recommendations

Both the 25AA320-I/P and 25LC320A-I/P maintain active product status with full RoHS3 compliance and REACH unaffected designation. Selection between these devices is based on application-specific requirements:

The 25AA320-I/P operates at 1 MHz clock frequency with a minimum supply voltage of 1.8V, suitable for low-power applications requiring extended voltage range operation.

The 25LC320A-I/P operates at 10 MHz clock frequency with a minimum supply voltage of 2.5V, appropriate for applications requiring higher data transfer rates within the specified voltage window.

Both devices share identical memory capacity, organization, write cycle time, operating temperature range, and physical package configuration. Circuit board layout and component placement remain compatible between devices. Supply voltage and clock frequency specifications must be verified against application requirements prior to device selection.

Frequently Asked Questions (FAQ)

Q: Can the 25LC320A-I/P directly replace the 25AA320-I/P in existing circuit designs?

A: Direct replacement is possible when the application circuit operates within the 2.5V ~ 5.5V supply voltage range and the 10 MHz clock frequency is compatible with the system timing requirements. If the original design relies on the 1.8V minimum supply voltage or requires exactly 1 MHz operation, circuit verification is necessary.

Q: Are the pin configurations identical between these devices?

A: Both devices use the 8-DIP package with identical pin assignments for SPI interface signals. Physical board layout and socket compatibility are maintained.

Q: What is the significance of the different clock frequencies?

A: The 25AA320-I/P operates at 1 MHz maximum clock frequency, while the 25LC320A-I/P operates at 10 MHz maximum clock frequency. The application circuit must support the clock frequency of the selected device. Higher clock frequency enables faster data transfer rates but does not affect memory capacity or write cycle time.

Q: Do both devices meet the same compliance standards?

A: Both devices are ROHS3 compliant, REACH unaffected, and carry unlimited moisture sensitivity rating (MSL 1). Compliance certifications are equivalent.

Q: What is the impact of different minimum supply voltages?

A: The 25AA320-I/P supports operation down to 1.8V, while the 25LC320A-I/P requires a minimum of 2.5V. Applications operating below 2.5V must use the 25AA320-I/P. Applications operating at 2.5V or higher can use either device.