AT88SC3216C-PU Equivalent & Substitute Parts

Part Overview

The AT88SC3216C-PU is a Secure Memory IC manufactured by Microchip Technology in the CryptoMemory® series. This 8-DIP through-hole component provides 32Kbit secure memory functionality for embedded and smart card applications. The product is currently obsolete, making equivalent and substitute parts necessary for ongoing system support, design updates, and production continuity. Substitute parts in this reference are selected based on matching memory capacity, interface protocol, package form factor, and electrical operating parameters.

Substiute Parts

AT88SC3216C-PU

Microchip TechnologyIn Stock: 1019AT88SC3216C-PU Datasheet

Current PartRFQ

24AA32A-I/P

Microchip TechnologyIn Stock: 331624AA32A-I/P Datasheet

MFR RecommendedRFQ

24AA32AF-I/P

Microchip TechnologyIn Stock: 186624AA32AF-I/P Datasheet

MFR RecommendedRFQ

24LC32A-E/P

Microchip TechnologyIn Stock: 152624LC32A-E/P Datasheet

MFR RecommendedRFQ

24LC32A-I/P

Microchip TechnologyIn Stock: 523324LC32A-I/P Datasheet

MFR RecommendedRFQ

24LC32AF-E/P

Microchip TechnologyIn Stock: 74624LC32AF-E/P Datasheet

MFR RecommendedRFQ

24LC32AF-I/P

Microchip TechnologyIn Stock: 94324LC32AF-I/P Datasheet

MFR RecommendedRFQ

BR24L32-W

Rohm SemiconductorIn Stock: 972BR24L32-W Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the AT88SC3216C-PU are selected based on the following critical parameters that determine functional compatibility:

Memory Capacity & Organization: All substitute parts maintain 32Kbit capacity with 4K x 8 organization, ensuring data storage equivalence.

Package & Mounting: All substitutes use 8-DIP (0.300", 7.62mm) through-hole packaging, maintaining PCB compatibility and assembly process alignment.

Interface Protocol: Substitute parts utilize I2C serial interface at 400 kHz clock frequency, providing direct protocol compatibility with existing system designs.

Electrical Specifications: Operating voltage ranges and temperature ratings are provided for each substitute to enable selection based on specific application requirements.

Compliance & Certifications: All substitute parts maintain ROHS3 compliance, REACH unaffected status, and MSL 1 rating, ensuring regulatory and environmental compatibility.

The AT88SC3216C-PU is a secure memory device; however, the substitute parts listed are standard EEPROM memory ICs. Selection should account for application-specific security requirements.

Parameter Comparison

Engineering Selection Recommendations

Active Product Status: All substitute parts listed maintain active product status with Microchip Technology and Rohm Semiconductor, ensuring long-term availability and manufacturing support compared to the obsolete AT88SC3216C-PU.

Regulatory Compliance: All substitute parts are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for new designs and production.

Microchip Technology Substitutes: The 24AA32A-I/P, 24AA32AF-I/P, 24LC32A-E/P, 24LC32A-I/P, 24LC32AF-E/P, and 24LC32AF-I/P provide direct manufacturer alternatives within the same product family, offering consistent quality and support infrastructure.

Voltage Range Considerations: Parts with extended voltage ranges (1.7V ~ 5.5V or 1.8V ~ 5.5V) provide broader system compatibility. Parts with 2.5V ~ 5.5V ranges are suitable for standard industrial applications.

Temperature Range Selection: 24LC32A-E/P and 24LC32AF-E/P support extended temperature operation (-40°C ~ 125°C), suitable for automotive and industrial environments. Standard temperature range parts (-40°C ~ 85°C) are appropriate for commercial applications.

Cross-Manufacturer Option: BR24L32-W from Rohm Semiconductor provides an alternative source for supply chain diversification while maintaining identical memory capacity, interface, and package specifications.

Frequently Asked Questions (FAQ)

Q: Can the AT88SC3216C-PU be directly replaced with any of these substitute parts?

A: The substitute parts match the AT88SC3216C-PU in memory capacity (32Kbit), package form factor (8-DIP through-hole), and memory organization (4K x 8). However, the AT88SC3216C-PU is a secure memory device with proprietary interface, while substitutes are standard I2C EEPROM devices. System-level compatibility depends on application requirements for security functionality.

Q: What is the difference between 24AA32A and 24LC32A series?

A: Both series provide 32Kbit I2C EEPROM in 8-DIP packaging. The 24AA32A series supports lower voltage operation (1.7V ~ 5.5V or 1.8V ~ 5.5V), while 24LC32A series operates at 2.5V ~ 5.5V. Selection depends on system power supply specifications.

Q: What does the suffix "-E/P" versus "-I/P" indicate?

A: The suffix indicates temperature grade. "-E/P" denotes extended temperature range (-40°C ~ 125°C), suitable for automotive and industrial applications. "-I/P" denotes industrial temperature range (-40°C ~ 85°C), suitable for standard commercial applications.

Q: Are all substitute parts through-hole compatible with existing PCB layouts?

A: All substitute parts use 8-DIP (0.300", 7.62mm) through-hole packaging. PCB footprints and assembly processes remain compatible. Verify pin assignment compatibility with system schematics before implementation.

Q: What is the significance of the "AF" designation in part numbers like 24AA32AF-I/P?

A: The "AF" designation indicates an automotive-grade variant with enhanced reliability specifications. Selection between standard and AF variants depends on application requirements and supply chain preferences.

Q: Is BR24L32-W from Rohm Semiconductor a direct substitute?

A: BR24L32-W provides equivalent memory capacity, I2C interface, 400 kHz clock frequency, and 8-DIP packaging. It supports 1.8V ~ 5.5V operation and -40°C ~ 85°C temperature range. Cross-manufacturer substitution requires verification of pin assignment and timing specifications in system design.

Q: What inventory levels are available for these substitute parts?

A: Inventory availability varies: 24LC32A-I/P (5200 pcs), 24AA32A-I/P (3300 pcs), 24LC32AF-I/P (849 pcs), 24LC32A-E/P (1432 pcs), 24AA32AF-I/P (1791 pcs), 24LC32AF-E/P (676 pcs), BR24L32-W (870 pcs). Verify current stock status with supplier for production requirements.