AT24C32D-SSPD-T Equivalent & Substitute Parts

Part Overview

The AT24C32D-SSPD-T is a 32Kbit EEPROM memory IC manufactured by Microchip Technology, designed for I2C serial communication applications operating at 1 MHz. This non-volatile memory device is qualified to AEC-Q100 automotive standards and operates across an extended temperature range of -40°C to 125°C. The part is currently in active production status with substantial inventory availability. Substitute parts are identified when equivalent memory capacity, interface protocol, package form factor, and electrical operating parameters align with application requirements.

Substiute Parts

AT24C32D-SSPD-T

Microchip TechnologyIn Stock: 12815AT24C32D-SSPD-T Datasheet

Current PartRFQ

M24C32-RMN6P

STMicroelectronicsIn Stock: 2121M24C32-RMN6P Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AT24C32D-SSPD-T is determined by the following critical parameters:

• Memory Capacity: 32Kbit with 4K x 8 organization
• Serial Interface: I2C protocol at 1 MHz clock frequency
• Physical Package: 8-SOIC surface mount form factor with 3.90mm width
• Write Cycle Time: 5ms maximum
• Supply Voltage Range: Minimum 2.5V operation required
• Environmental Compliance: ROHS3 compliance mandatory

The M24C32-RMN6P manufactured by STMicroelectronics meets all critical substitution criteria. Both devices share identical memory capacity, organization, I2C interface, clock frequency, write cycle time, package geometry, and RoHS3 compliance status. The substitute part operates across a wider supply voltage range (1.8V ~ 5.5V) and maintains the same 8-SOIC package specification.

Parameter Comparison

Engineering Selection Recommendations

Both the AT24C32D-SSPD-T and M24C32-RMN6P are active production devices with ROHS3 compliance. The AT24C32D-SSPD-T carries AEC-Q100 automotive qualification, which is not specified for the M24C32-RMN6P. Selection between these parts depends on application-specific requirements: the Microchip device is suitable for automotive-grade applications requiring extended temperature operation to 125°C, while the STMicroelectronics substitute provides faster access time (450 ns versus 900 ns) and lower moisture sensitivity rating. Both devices maintain identical I2C interface functionality, memory capacity, and package form factor, ensuring direct functional compatibility in applications where automotive qualification is not mandatory.

Frequently Asked Questions (FAQ)

Q: Can the M24C32-RMN6P directly replace the AT24C32D-SSPD-T in all applications?

A: Direct replacement is possible for non-automotive applications. Both devices share identical memory capacity (32Kbit), I2C interface protocol, 1 MHz clock frequency, 5ms write cycle time, and 8-SOIC package geometry. However, the AT24C32D-SSPD-T is AEC-Q100 qualified for automotive use, while the M24C32-RMN6P qualification status for automotive applications is not specified. Applications requiring automotive-grade components should verify the substitute part's suitability with the system integrator.

Q: What are the differences in operating temperature ranges?

A: The AT24C32D-SSPD-T operates from -40°C to 125°C, while the M24C32-RMN6P operates from -40°C to 85°C. Applications requiring operation above 85°C must use the Microchip device.

Q: How do access times differ between these parts?

A: The AT24C32D-SSPD-T has an access time of 900 ns, while the M24C32-RMN6P has an access time of 450 ns. The STMicroelectronics part provides faster data access. Both devices meet the 1 MHz I2C clock frequency specification.

Q: Are there supply voltage compatibility considerations?

A: The AT24C32D-SSPD-T operates from 2.5V to 5.5V, while the M24C32-RMN6P operates from 1.8V to 5.5V. The STMicroelectronics substitute supports lower voltage operation. Both devices are compatible with standard 3.3V and 5V supply systems.

Q: What is the significance of the Moisture Sensitivity Level difference?

A: The AT24C32D-SSPD-T has MSL 3 (168 hours), while the M24C32-RMN6P has MSL 1 (unlimited). Lower MSL ratings indicate greater tolerance to moisture exposure during storage and handling. The STMicroelectronics part requires less stringent moisture control during manufacturing and assembly processes.

Q: Are the packages physically identical?

A: Yes, both devices use the 8-SOIC package with 0.154" (3.90mm) width. Pin-to-pin compatibility is maintained, allowing direct PCB footprint reuse.