AT24C32D-XPD-T Equivalent & Substitute Parts

Part Overview

The AT24C32D-XPD-T is a 32Kbit EEPROM memory IC manufactured by Microchip Technology, designed for I2C serial communication applications. This non-volatile memory device operates at 1 MHz clock frequency with 900 ns access time, supporting a supply voltage range of 2.5V to 5.5V and operating temperatures from -40°C to 125°C. The device is qualified to AEC-Q100 automotive standards and is currently in active production status with 2800 units in stock. Substitute parts are identified when equivalent memory capacity, interface protocol, package form factor, and compliance certifications align with application requirements.

Substiute Parts

AT24C32D-XPD-T

Microchip TechnologyIn Stock: 2878AT24C32D-XPD-T Datasheet

Current PartRFQ

BR24L32FVT-WE2

Rohm SemiconductorIn Stock: 1455BR24L32FVT-WE2 Datasheet

MFR RecommendedRFQ

R1EX24032ATAS0I#S0

Renesas Electronics CorporationIn Stock: 4220R1EX24032ATAS0I#S0 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the AT24C32D-XPD-T are qualified based on the following criteria:

Core Compatibility Parameters:

• Memory capacity: 32Kbit
• Memory organization: 4K x 8
• Interface protocol: I2C
• Package type: 8-TSSOP with 0.173" width and 4.40mm dimensions
• Write cycle time: 5ms
• RoHS3 compliance
• Non-volatile EEPROM technology

Acceptable Parameter Variations:

• Clock frequency: Substitute parts operate at 400 kHz, which is lower than the primary part's 1 MHz specification but remains compatible with I2C protocol requirements
• Supply voltage range: Substitute parts support 1.8V ~ 5.5V, which encompasses the primary part's 2.5V ~ 5.5V range
• Operating temperature: Substitute parts support -40°C ~ 85°C, which is narrower than the primary part's -40°C ~ 125°C range
• Access time: 900 ns specification is maintained in substitute options

Parameter Comparison

Engineering Selection Recommendations

BR24L32FVT-WE2 (Rohm Semiconductor): This substitute is suitable for applications where the reduced clock frequency of 400 kHz is acceptable. The device maintains full I2C protocol compatibility and identical memory organization. The extended lower voltage support (1.8V minimum) provides additional design flexibility. However, the operating temperature range is limited to -40°C to 85°C, which excludes high-temperature automotive applications requiring operation above 85°C. This part is verified as DiGi-Electronics programmable and is available in Tape & Reel packaging with 1400 units in stock.

R1EX24032ATAS0I#S0 (Renesas Electronics Corporation): This substitute maintains the 900 ns access time specification and 400 kHz clock frequency, providing direct functional equivalence for timing-critical applications. The device supports the same 1.8V to 5.5V supply range and shares identical memory organization and write cycle characteristics. Like the Rohm alternative, the operating temperature range is -40°C to 85°C. This part is available in Tape & Reel packaging with 4139 units in stock and is not verified as DiGi-Electronics programmable.

Selection Criteria:

• Use AT24C32D-XPD-T for applications requiring operation above 85°C or the full 1 MHz clock frequency capability
• Use BR24L32FVT-WE2 or R1EX24032ATAS0I#S0 for standard temperature range applications where 400 kHz I2C operation is acceptable
• Verify supply voltage requirements; both substitutes support lower minimum voltage (1.8V) compared to the primary part (2.5V)

Frequently Asked Questions (FAQ)

Q: Can BR24L32FVT-WE2 or R1EX24032ATAS0I#S0 be used as direct replacements for AT24C32D-XPD-T?

A: Both parts are functionally equivalent for applications operating within -40°C to 85°C temperature range and where 400 kHz I2C clock frequency is acceptable. The 32Kbit capacity, 4K x 8 organization, I2C interface, 5ms write cycle time, and 8-TSSOP package are identical. Applications requiring operation above 85°C or mandatory 1 MHz clock frequency must use the AT24C32D-XPD-T.

Q: What are the key differences between the substitute parts?

A: BR24L32FVT-WE2 is verified as DiGi-Electronics programmable and supplied in Tape & Reel packaging. R1EX24032ATAS0I#S0 maintains the 900 ns access time specification explicitly and is not verified as DiGi-Electronics programmable. Both operate at 400 kHz and support -40°C to 85°C temperature range.

Q: Are there voltage compatibility concerns when substituting?

A: The substitute parts support 1.8V minimum supply voltage compared to AT24C32D-XPD-T's 2.5V minimum. This means substitutes can operate in lower voltage applications. Both support the upper limit of 5.5V. Verify your application's actual supply voltage requirements before selection.

Q: Does the reduced clock frequency affect I2C protocol compatibility?

A: No. The I2C protocol supports clock frequencies from 100 kHz to 3.4 MHz in standard and fast modes. The 400 kHz operation of substitute parts is within standard I2C specification and maintains full protocol compatibility with the 1 MHz primary part.

Q: What is the significance of the 8-TSSOP-B package designation for BR24L32FVT-WE2?

A: The 8-TSSOP-B designation indicates a variant of the 8-TSSOP package. Both the primary part and substitutes share identical physical dimensions (0.173" width, 4.40mm) and pin configuration, ensuring mechanical and electrical compatibility in PCB layouts.

Q: Which substitute part has higher inventory availability?

A: R1EX24032ATAS0I#S0 has 4139 units in stock compared to BR24L32FVT-WE2's 1400 units, providing greater availability for high-volume applications.