AT25020-10PI EEPROM Memory IC Equivalent & Substitute Parts

Part Overview

The AT25020-10PI is a 2Kbit Serial Peripheral Interface (SPI) EEPROM memory integrated circuit manufactured by Microchip Technology. This device operates at 3 MHz clock frequency with a supply voltage range of 4.5V to 5.5V and is housed in an 8-DIP through-hole package. The part is classified as obsolete, making identification of compatible substitute components essential for ongoing system support and new design implementations.

Substiute Parts

AT25020-10PI

Microchip TechnologyIn Stock: 669AT25020-10PI Datasheet

Current PartRFQ

25AA020A-I/P

Microchip TechnologyIn Stock: 86025AA020A-I/P Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AT25020-10PI is determined by the following critical parameters:

Core Compatibility Requirements:

• Memory Size: 2Kbit (256 x 8 organization)
• Memory Interface: SPI protocol
• Package Type: 8-DIP (0.300", 7.62mm)
• Mounting Type: Through Hole
• Operating Temperature Range: -40°C ~ 85°C
• Write Cycle Time: 5ms

Allowable Parameter Variations:

• Clock Frequency: Higher frequencies are acceptable (backward compatible)
• Supply Voltage Range: Wider ranges are acceptable (must include 4.5V ~ 5.5V minimum)

The 25AA020A-I/P qualifies as a direct substitute based on matching core parameters while offering enhanced specifications in clock frequency and supply voltage range.

Parameter Comparison

Engineering Selection Recommendations

The 25AA020A-I/P is a qualified substitute for the AT25020-10PI based on electrical and mechanical compatibility. Key selection factors:

Advantages of 25AA020A-I/P:

• Active product status ensures ongoing availability and manufacturing support
• ROHS3 compliance meets current environmental and regulatory requirements
• Extended supply voltage range (1.8V ~ 5.5V) provides greater design flexibility
• Higher clock frequency (10 MHz) supports faster data transfer rates while maintaining backward compatibility with 3 MHz operation

Compatibility Assurance:

• Identical memory capacity, organization, and SPI interface
• Matching package footprint and through-hole mounting configuration
• Identical operating temperature range and write cycle time
• Pin-compatible 8-DIP package enables direct board-level substitution

The obsolete status of the AT25020-10PI makes the 25AA020A-I/P the appropriate selection for new designs and system maintenance requiring 2Kbit SPI EEPROM functionality.

Frequently Asked Questions (FAQ)

Q: Can the 25AA020A-I/P be used as a direct replacement for the AT25020-10PI?

A: Yes. Both devices share identical memory capacity (2Kbit), organization (256 x 8), SPI interface, package type (8-DIP), and operating temperature range. The 25AA020A-I/P offers enhanced specifications including higher clock frequency and wider supply voltage range, making it fully backward compatible.

Q: What is the significance of the higher 10 MHz clock frequency in the 25AA020A-I/P?

A: The 25AA020A-I/P operates at 10 MHz compared to the AT25020-10PI's 3 MHz. This higher frequency enables faster SPI communication while maintaining full compatibility with systems designed for 3 MHz operation. Existing firmware and hardware interfaces require no modification.

Q: Does the extended supply voltage range (1.8V ~ 5.5V) of the 25AA020A-I/P affect compatibility?

A: No. The extended range is a superset of the original AT25020-10PI specification (4.5V ~ 5.5V). Systems operating within the original voltage range experience no compatibility issues. The wider range provides additional design flexibility for future applications.

Q: Are there any package or pinout differences between these parts?

A: No. Both devices use identical 8-DIP (0.300", 7.62mm) through-hole packages with matching pinouts. Board-level substitution requires no layout modifications or rework.

Q: What is the impact of ROHS3 compliance on the 25AA020A-I/P?

A: ROHS3 compliance indicates the 25AA020A-I/P meets current environmental and regulatory standards for hazardous substance restrictions. This is advantageous for new designs and systems subject to environmental compliance requirements. The AT25020-10PI's RoHS non-compliant status reflects its obsolete classification.

Q: Is the 5ms write cycle time identical between both parts?

A: Yes. Both the AT25020-10PI and 25AA020A-I/P maintain identical 5ms write cycle time specifications, ensuring equivalent performance in write-intensive applications.