Infineon Technologies C161PIL25FCABXUMA1

Overview

C161PIL25FCABXUMA1 from Infineon Technologies is a 16-bit single-chip microcontroller in the C166 family, serving as a high-performance embedded control unit with integrated 1 KByte IRAM, 2 KBytes XRAM, 10-bit 8-channel ADC (7.8 µs min conversion), I²C interface (400 kHz), and on-chip PLL clock generation (1:1.5 to 1:5). It targets cost-sensitive industrial motor control and power supply management systems.

For engineers reviewing the C161PIL25FCABXUMA1 datasheet, C161PIL25FCABXUMA1 pinout, C161PIL25FCABXUMA1 application, or C161PIL25FCABXUMA1 equivalent, key selection factors include its 25 MHz CPU clock (80 ns instruction cycle), 16-priority interrupt system with 27 sources, 100-pin TQFP/MQFP package, and support for multiplexed/demultiplexed 8/16-bit external buses up to 8 MBytes.

Technical Context

The C161PIL25FCABXUMA1 implements a 4-stage pipelined 16-bit CPU delivering up to 8 MIPS at 25 MHz, with register-based architecture enabling single-cycle context switching and enhanced Boolean bit manipulation for real-time control tasks. Its peripheral event controller (PEC) supports 8-channel interrupt-driven single-cycle data transfers independent of CPU intervention.

On-chip clock generation uses a configurable PLL with selectable division ratios (1:1.5, 1:2, 1:2.5, 1:3, 1:4, 1:5), prescaler, or direct external clock input; the real-time clock and programmable watchdog timer operate independently of main CPU execution flow.

Key Specifications

Pinout & Package

Delivered in a 100-pin TQFP (Thin Quad Flat Package) with 0.5 mm pitch, thermally enhanced for industrial ambient operation. Pin functions validated per Infineon Data Sheet 1999-07 (Fig. 3, Table 1).

Key Features

Applications

Equivalent & Alternatives

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

Compared with C161PIL25FCABXUMA1, the C167CR-LM offers greater processing headroom but removes XRAM flexibility, while the SAB-C161CS-32 sacrifices peripheral richness for lower unit cost-neither is pin- or firmware-compatible without hardware or software adaptation.

Availability

C161PIL25FCABXUMA1 is available at Aetrix Electronics and suitable for industrial motor control, switch-mode power supply design, and automotive body electronics requiring stable component supply across long-lifecycle production programs.

Supply support for C161PIL25FCABXUMA1 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 quality certification under ISO/TS 16949 and AEC-Q100.

The C161PI belongs to Infineon's legacy C166 microcontroller family, designed specifically for deterministic real-time control in cost-constrained industrial and automotive subsystems where peripheral integration and interrupt latency matter more than raw clock speed.

FAQ

What is the maximum operating frequency and corresponding instruction cycle time for C161PIL25FCABXUMA1?

The C161PIL25FCABXUMA1 operates at a maximum CPU clock frequency of 25 MHz, achieving an 80 ns instruction cycle time. This timing is guaranteed under specified industrial temperature range (–40°C to +85°C) and supply voltage (4.5 V to 5.5 V), as confirmed in the 1999-07 Infineon preliminary datasheet Section 3.6 and AC Characteristics Table.

Does C161PIL25FCABXUMA1 support external memory expansion, and what bus configurations are available?

Yes, it supports up to 8 MBytes of external code and data memory via a programmable external bus with five chip-select signals. The bus supports both multiplexed (AD0–AD15 with ALE) and demultiplexed (separate address/data) modes, configurable for 8-bit or 16-bit data width and adjustable wait states per address range.

How many analog input channels does the integrated ADC provide, and what is its minimum conversion time?

The on-chip ADC provides eight analog input channels with 10-bit resolution. Its minimum programmable conversion time is 7.8 µs, achieved using the fastest internal clock configuration and verified in the "A/D Converter" section (pages 25, 51–52) of the 1999-07 datasheet.

Is C161PIL25FCABXUMA1 pin-compatible with earlier C161RI derivatives?

Yes, C161PIL25FCABXUMA1 is a direct functional and pin-compatible successor to the C161RI, as explicitly stated in the datasheet revision history: "The C161PI is the successor of the C161RI. Therefore this data sheet also replaces the C161RI data sheet." All 100-pin MQFP/TQFP packages share identical pinout and electrical characteristics.