AT24C32-10PC-1.8 Equivalent & Substitute Parts

Part Overview

The AT24C32-10PC-1.8 is a 32Kbit EEPROM memory IC manufactured by Microchip Technology, featuring I2C interface operation at 400 kHz with 8-PDIP through-hole packaging. This part is classified as obsolete, which necessitates identification of active equivalent alternatives for new designs and production continuity. The device operates across a supply voltage range of 1.8V to 5.5V with an access time of 900 ns and a write cycle time of 10ms per word or page.

Substiute Parts

AT24C32-10PC-1.8

Microchip TechnologyIn Stock: 914AT24C32-10PC-1.8 Datasheet

Current PartRFQ

24AA32A-I/P

Microchip TechnologyIn Stock: 331624AA32A-I/P Datasheet

DirectRFQ

BR24L32-W

Rohm SemiconductorIn Stock: 972BR24L32-W Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AT24C32-10PC-1.8 is determined by the following mandatory parameters: 32Kbit memory capacity, 4K x 8 organization, I2C interface protocol, 400 kHz clock frequency, 8-DIP through-hole package, and compatible supply voltage range of 1.8V to 5.5V. Parts meeting these electrical and mechanical specifications are functionally interchangeable at the circuit level. The identified substitute parts satisfy all core electrical parameters and physical packaging requirements.

Parameter Comparison

Engineering Selection Recommendations

The 24AA32A-I/P is the primary substitute option, manufactured by Microchip Technology as an active product with ROHS3 compliance. This part maintains identical electrical specifications and package configuration while offering improved write cycle performance (5ms versus 10ms) and an extended operating temperature range (-40°C to 85°C versus 0°C to 70°C). The part is verified as programmable and carries 3300 units in current inventory.

The BR24L32-W from Rohm Semiconductor provides an alternative from a different manufacturer, meeting all core electrical and mechanical requirements with ROHS3 compliance and active product status. This option offers equivalent write cycle time (5ms) and extended temperature range (-40°C to 85°C). Access time specification is not provided for this part.

Both substitute parts are suitable for applications requiring compliance with modern environmental standards and extended operational temperature ranges. Selection between these options depends on supply chain availability, manufacturer preference, and specific application temperature requirements.

Frequently Asked Questions (FAQ)

Q: Can the 24AA32A-I/P directly replace the AT24C32-10PC-1.8 in existing designs?

A: Yes. Both parts share identical memory capacity (32Kbit), organization (4K x 8), I2C interface, clock frequency (400 kHz), supply voltage range (1.8V to 5.5V), and 8-DIP through-hole package. The 24AA32A-I/P is pin-compatible and functionally equivalent.

Q: What is the significance of the improved write cycle time in substitute parts?

A: The 24AA32A-I/P and BR24L32-W both feature 5ms write cycle time compared to the original part's 10ms. This represents faster data write operations and does not affect compatibility; systems designed for 10ms cycles will operate correctly with faster parts.

Q: Are the substitute parts suitable for applications requiring extended temperature operation?

A: The 24AA32A-I/P and BR24L32-W both support -40°C to 85°C operating temperature, compared to the original part's 0°C to 70°C range. This extended range accommodates industrial and automotive applications requiring broader thermal performance.

Q: What is the packaging difference between these parts?

A: All three parts use identical 8-DIP (0.300", 7.62mm) through-hole packaging. No PCB layout modifications are required for substitution.

Q: Why is RoHS compliance important for this substitution?

A: The original AT24C32-10PC-1.8 is RoHS non-compliant, while both substitute parts (24AA32A-I/P and BR24L32-W) are ROHS3 compliant. This compliance is required for products sold into regulated markets and reflects current manufacturing standards.

Q: Which substitute part should be selected for new designs?

A: The 24AA32A-I/P is recommended for new designs due to its active product status, verified programmability, higher inventory availability (3300 units), and manufacturer continuity with the original part's manufacturer (Microchip Technology).