Infineon Technologies C161PIL25MCAFXUMA1

Overview

C161PIL25MCAFXUMA1 from Infineon Technologies is a 16-bit single-chip microcontroller in the C166 family, serving as a high-performance embedded control unit with integrated PLL clock generation, 10-bit ADC, dual serial channels, and I²C interface. It operates at 25 MHz CPU clock (80 ns instruction cycle), delivers 400 ns 16×16 multiplication, supports 16 MByte linear addressing, and targets cost-sensitive industrial motor control and power conversion systems.

For engineers reviewing the C161PIL25MCAFXUMA1 datasheet, C161PIL25MCAFXUMA1 pinout, C161PIL25MCAFXUMA1 application, or C161PIL25MCAFXUMA1 equivalent, key selection criteria include its 100-pin TQFP/MQFP package, 27-source interrupt system with 40 ns sample rate, on-chip XRAM (2 KB), programmable external bus timing, and real-time clock with watchdog supervision.

Technical Context

The C161PIL25MCAFXUMA1 implements a 4-stage pipelined 16-bit CPU with register-based architecture, single-cycle context switching, and enhanced Boolean bit manipulation for efficient HLL and RTOS support. Its peripheral event controller (PEC) enables interrupt-driven, single-cycle data transfers across 8 channels.

On-chip clock generation uses a configurable PLL (1:1.5/2/2.5/3/4/5), prescaler, or direct external clock input. The 10-bit ADC achieves programmable conversion times down to 7.8 µs and accepts up to four analog inputs via Port 5 pins (AN0–AN3), which are Schmitt-triggered and input-only.

Key Specifications

Pinout & Package

Package: 100-pin TQFP (Thin Quad Flat Package), RoHS-compliant, lead-free, body size 14 mm × 14 mm, 0.5 mm lead pitch.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit microcontroller applications.

Compared with the C161PIL25MCAFXUMA1, the SAB-C167CS-LM offers greater computational headroom at the cost of power and pin compatibility, while the SAF-C161PI-LF maintains identical functionality in an alternate package-making it ideal for footprint-constrained or rework-sensitive deployments.

Availability

C161PIL25MCAFXUMA1 is available at Aetrix Electronics and suitable for industrial motor drive, uninterruptible power supply (UPS), and programmable logic controller (PLC) I/O module applications requiring stable component supply and long-term lifecycle support.

Supply support for C161PIL25MCAFXUMA1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Infineon Technologies AG is a German semiconductor manufacturer specializing in power management, automotive, and industrial control ICs, with global manufacturing and R&D infrastructure.

The C161PI belongs to the C166 microcontroller family, designed specifically for cost-sensitive, high-reliability embedded control in motor drives, power conversion, and factory automation where deterministic timing and integrated peripherals reduce BOM count.

FAQ

What is the maximum operating frequency of the C161PIL25MCAFXUMA1?

The C161PIL25MCAFXUMA1 is rated for a maximum CPU clock frequency of 25 MHz, achieving an 80 ns instruction cycle time. This is enabled by its on-chip PLL with selectable multiplication ratios (1:1.5 through 1:5) and supports stable operation across the full industrial temperature range (–40°C to +85°C) when powered with regulated 5 V ±5%.

Does the C161PIL25MCAFXUMA1 support in-system programming (ISP)?

Yes-the device includes an on-chip bootstrap loader that enables in-system programming via its asynchronous serial channel (TxD0/RxD0). No external programmer is required; firmware updates can be performed using standard UART communication and a simple host-side protocol defined in the C166 family user's manual.

How many analog input channels does the integrated ADC support?

The C161PIL25MCAFXUMA1 integrates a 10-bit successive-approximation ADC with up to four analog input channels (AN0–AN3), mapped exclusively to Port 5 pins (P5.0–P5.3). These pins are input-only with Schmitt-trigger inputs and cannot be used as general-purpose digital I/O when configured for analog acquisition.

Is the C161PIL25MCAFXUMA1 pin-compatible with earlier C161RI derivatives?

Yes-the C161PIL25MCAFXUMA1 is a direct successor to the C161RI and maintains full pin-to-pin and software compatibility. The datasheet explicitly states it replaces the C161RI documentation, and all peripheral registers, memory maps, and interrupt vectors remain unchanged across both derivatives.