C161SLM3VAABXUMA1

Overview

The C161SLM3VAABXUMA1 is a 16-bit microcontroller from the Infineon C16xx family, based on the C166 core architecture. It operates at a clock speed of 20 MHz with an external oscillator type and supports a supply voltage range of 3.0V to 3.6V. The device features a ROMless program memory configuration and includes 2K x 8 bytes of RAM. It is housed in a PG-MQFP-80-7 surface-mount package and offers 63 I/O lines. Connectivity options include EBI/EMI, SPI, and UART/USART interfaces. Peripherals integrated within the chip consist of POR, PWM, and WDT functions. The component is rated for an operating temperature range of -40°C to 85°C (TA) and has a Moisture Sensitivity Level (MSL) of 3.

Feature Summary

• Implements a 16-bit RISC architecture optimized for embedded control applications
• Provides flexible connectivity through EBI/EMI, SPI, and UART/USART interfaces
• Integrates essential peripheral functions including PWM, WDT, and Power-On Reset

Applications

• Automotive electronic control units
• Industrial motor control systems
• General-purpose embedded logic controllers

Procurement Notes

This component is officially classified as obsolete and no longer manufactured by Infineon Technologies. Procurement should focus on verifying the authenticity of remaining stock from authorized distributors or certified secondary market suppliers. Buyers must confirm the specific lot date code and storage history due to the part's discontinued status. Cross-referencing with the provided substitute models is recommended to ensure long-term supply chain stability and compatibility with existing designs.

Selection Notes

Select this microcontroller when a legacy 16-bit C166 core solution is required for specific automotive or industrial protocols. The ROMless architecture suits applications where code is loaded externally or via bootloaders. Consider the 3.3V supply requirement and the 80-pin MQFP package constraints during PCB layout. Verify that the available I/O count and peripheral set meet the system requirements before finalizing the design, keeping in mind the availability of modern replacement families.

Part Context

Part of the C16xx series, which extends the established C166 architecture. This series targets high-performance embedded applications requiring robust real-time processing capabilities. The C161 variant represents a specific configuration within this lineage, balancing processing power with interface flexibility for cost-sensitive yet reliable embedded environments.

Replacement Considerations

Public confirmed substitutes include XMC4200F64K256BAXQSA1 and XMC4400F100K512BAXQMA1. These are newer generations from Infineon and may require architectural migration efforts.