Equivalent & Substitute Parts for C161CSLFCAFXUMA2

Part Overview

The C161CSLFCAFXUMA2 is a 16-bit microcontroller from Infineon Technologies' C16xx series, featuring a C166 core processor operating at 25MHz with ROMless architecture. This device is classified as obsolete and is no longer in active production. Due to its discontinued status, identifying functionally equivalent substitute components is essential for system redesign, long-term support, and production continuity in applications requiring comparable embedded control capabilities.

Substiute Parts

C161CSLFCAFXUMA2

Infineon TechnologiesIn Stock: 645C161CSLFCAFXUMA2 Datasheet

Current PartRFQ

XMC4700F144K2048AAXQMA1

Infineon TechnologiesIn Stock: 1444XMC4700F144K2048AAXQMA1 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the C161CSLFCAFXUMA2 is determined by the following critical parameters:

Manufacturer Continuity: Both the main part and substitute are manufactured by Infineon Technologies, ensuring design consistency and support infrastructure alignment.

Connectivity Requirements: The main part provides CANbus, EBI/EMI, I2C, SPI, and UART/USART interfaces. The substitute must maintain these core communication protocols to ensure system-level compatibility.

Peripheral Feature Set: The presence of POR, PWM, and WDT in the main part establishes baseline peripheral requirements for control applications.

I/O Count and Data Conversion: The 93 I/O pins and 12-bit analog-to-digital conversion capability define the signal processing capacity required for equivalent functionality.

Operating Conditions: The temperature range of -40°C to 85°C and supply voltage of 4.5V to 5.5V establish the environmental operating envelope.

The XMC4700F144K2048AAXQMA1 is identified as a manufacturer-recommended substitute. While this device represents a significant architectural upgrade (32-bit ARM Cortex-M4 versus 16-bit C166), it provides enhanced processing capability, expanded memory resources, and extended connectivity options suitable for applications requiring modernization from the obsolete C16xx platform.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The C161CSLFCAFXUMA2 is obsolete and no longer supported by Infineon Technologies. The XMC4700F144K2048AAXQMA1 maintains active product status with ongoing manufacturer support, ensuring availability of technical documentation, design resources, and long-term supply chain stability.

Compliance and Certification: The substitute part is ROHS3 compliant, meeting current regulatory requirements for electronic components in regulated markets. Both parts maintain identical Moisture Sensitivity Level (MSL) ratings of 3, ensuring equivalent handling and storage requirements.

Architectural Transition: Selection of the XMC4700F144K2048AAXQMA1 represents a platform migration from the legacy C16xx architecture to the modern ARM Cortex-M4 XMC4000 series. This transition provides enhanced processing performance, expanded memory capacity, and extended peripheral functionality while maintaining core communication interfaces (CANbus, I2C, SPI, UART/USART) required for system compatibility.

Supply Chain Availability: The substitute part is currently in active production with 1430 units in stock, compared to 634 units of the obsolete main part. This availability differential supports long-term production planning and reduces supply risk.

Frequently Asked Questions (FAQ)

Q: Can the XMC4700F144K2048AAXQMA1 directly replace the C161CSLFCAFXUMA2 without design modifications?

A: Direct pin-for-pin replacement is not possible due to package differences (64-LQFP versus 144-LQFP) and architectural changes (16-bit C166 versus 32-bit ARM Cortex-M4). System redesign is required, including PCB layout modifications, firmware porting, and peripheral reconfiguration.

Q: What are the primary advantages of migrating to the XMC4700F144K2048AAXQMA1?

A: The substitute provides 32-bit processing capability at 144MHz (versus 25MHz), 2MB onboard FLASH memory, 352K RAM (versus 10K), extended connectivity options including Ethernet and USB OTG, and active product status with manufacturer support.

Q: Are there voltage supply compatibility considerations?

A: Yes. The C161CSLFCAFXUMA2 operates at 4.5V to 5.5V, while the XMC4700F144K2048AAXQMA1 requires 3.13V to 3.63V. Power supply redesign is necessary for the substitute part.

Q: How do the package differences affect PCB design?

A: The main part uses a 64-pin LQFP package, while the substitute uses a 144-pin LQFP with exposed pad. The increased pin count (119 I/O versus 93) provides additional signal routing flexibility but requires significant PCB layout revision.

Q: Is firmware compatibility maintained between these devices?

A: No. The C166 16-bit instruction set is not compatible with ARM Cortex-M4 32-bit architecture. Complete firmware porting and recompilation are required using appropriate development tools for the XMC4000 platform.

Q: What is the operating temperature range difference?

A: The C161CSLFCAFXUMA2 operates from -40°C to 85°C, while the XMC4700F144K2048AAXQMA1 extends to -40°C to 125°C, providing broader thermal operating capability for demanding industrial applications.