Infineon Technologies XC161CS32F40FBBAKXUMA1

Overview

XC161CS32F40FBBAKXUMA1 from Infineon Technologies is a 16-bit single-chip microcontroller based on the C166SV2 core, featuring 256 KB on-chip Flash, 12 KB total SRAM (2 KB DPRAM + 4 KB DSRAM + 6 KB PSRAM), and integrated TwinCAN 2.0B interface with 32 message objects across two CAN nodes. It operates at up to 40 MHz CPU clock (25 ns instruction cycle), supports 10-bit/8-bit ADC with 2.55 µs conversion time, and targets automotive powertrain and industrial motor control applications.

For engineers reviewing the XC161CS32F40FBBAKXUMA1 datasheet, XC161CS32F40FBBAKXUMA1 pinout, XC161CS32F40FBBAKXUMA1 application, or XC161CS32F40FBBAKXUMA1 equivalent, key selection criteria include its dual-CAN node capability, 73-source interrupt system with 50 ns sample rate, on-chip PLL clock generation (1:0.15–1:10), and RoHS-compliant 144-pin TQFP package with 0.5 mm pitch.

Technical Context

The XC161CS32F40FBBAKXUMA1 implements a 5-stage pipelined C166SV2 CPU core with zero-cycle jumps, 1-cycle 16×16 multiplication, and MAC instructions-enabling deterministic real-time execution in safety-critical embedded systems. Its memory subsystem includes separate dual-port RAM for concurrent CPU/peripheral access and 256 KB Flash with configurable wait states (IMBCTRL.WSFLASH) for reliable operation up to 40 MHz.

Peripheral integration centers on deterministic timing control: the GPT12E unit provides five timers with capture/compare, CAPCOM1/2 offers 32 I/O pins across two 16-channel units, and the TwinCAN module supports full CAN and Basic CAN modes with gateway functionality between CAN0 and CAN1-critical for distributed vehicle networks requiring message filtering and routing without host CPU intervention.

Key Specifications

Pinout & Package

XC161CS32F40FBBAKXUMA1 is housed in a 144-pin Green TQFP package (RoHS compliant), 0.5 mm pitch, with thermal resistance R_ΘJC = 12.5 K/W and R_ΘJL = 19.0 K/W per datasheet revision V1.2 (2006-08).

Key Features

Applications

Equivalent & Alternatives

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

Compared with SAK-XC2786X-104F and SAF-XC164CS-32F40F, the XC161CS32F40FBBAKXUMA1 delivers optimal cost-performance balance for established automotive ECU designs where 256 KB Flash and dual-CAN gateway functionality meet functional safety and timing requirements without over-engineering.

Availability

XC161CS32F40FBBAKXUMA1 is available at Aetrix Electronics and suitable for engine control units, industrial motor drives, brake-by-wire modules, and commercial vehicle gateways requiring stable component supply across extended temperature ranges (−40 °C to +125 °C).

Supply support for XC161CS32F40FBBAKXUMA1 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 R&D and manufacturing infrastructure.

The XC161 family belongs to Infineon's legacy C166-based automotive microcontroller line, designed specifically for deterministic real-time control in powertrain, chassis, and body electronics where CAN networking, analog sensing, and robust timing are critical.

FAQ

What is the maximum operating frequency and corresponding instruction cycle time for the XC161CS32F40FBBAKXUMA1?

The XC161CS32F40FBBAKXUMA1 supports a maximum CPU clock frequency of 40 MHz, delivering a 25 ns instruction cycle time for single-cycle execution of most instructions. This timing is achieved using the on-chip PLL with programmable multiplication factors (1:0.15 to 1:10) and verified under specified voltage and temperature conditions per datasheet Section 4.4.

Does the XC161CS32F40FBBAKXUMA1 support in-system programming (ISP) without external hardware?

Yes-the device includes an on-chip bootstrap loader that enables ISP via ASC0 (UART) or CAN interfaces using standard protocols. No external programmer is required; firmware updates can be performed in the field using existing communication channels, provided the bootloader is unmodified and protected memory regions are respected.

How many CAN nodes does the TwinCAN module support, and what is the message object capacity?

The TwinCAN module supports two independent CAN nodes (CAN0 and CAN1), each with full CAN 2.0B compliance. It provides 32 configurable message objects shared across both nodes, enabling hardware-based message filtering, transmission scheduling, and gateway functionality without CPU intervention.

What low-power modes are available, and how do they differ in terms of peripheral retention and wake-up sources?

The XC161CS32F40FBBAKXUMA1 offers Idle, Sleep, and Power Down modes. Idle stops CPU clock but retains all peripheral clocks and register states. Sleep disables CPU and most peripheral clocks while preserving SRAM and selected registers. Power Down shuts down nearly all circuitry except real-time clock and wake-up logic, supporting wake-up via CAN activity, external interrupts, or timer events.