Infineon Technologies XC161CJ16F40FBBFXUMA1

Overview

XC161CJ16F40FBBFXUMA1 from Infineon Technologies is a 16-bit single-chip microcontroller based on the C166SV2 core, featuring 128 KB on-chip Flash, 8 KB total SRAM (2 KB DPRAM + 4 KB DSRAM + 2 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 1-cycle 16×16 multiplication and MAC, and targets real-time embedded control in automotive powertrain and industrial motor drives.

For engineers reviewing the XC161CJ16F40FBBFXUMA1 datasheet, XC161CJ16F40FBBFXUMA1 pinout, XC161CJ16F40FBBFXUMA1 application, or XC161CJ16F40FBBFXUMA1 equivalent, key selection criteria include its dual-CAN node capability, 12-channel 10-bit ADC with 2.55 µs conversion time, JTAG-based OCDS debug support, and operation over –40 °C to +125 °C extended temperature range.

Technical Context

The XC161CJ16F40FBBFXUMA1 implements the C166SV2 16-bit RISC-like CPU with five-stage pipeline, zero-cycle jumps, and register bank switching for fast context save/restore-critical for deterministic interrupt response in motor control loops. Its memory subsystem includes separate 128 KB Flash (with boot loader), 2 KB dual-port RAM for concurrent CPU/peripheral access, and configurable external bus supporting up to 12 MB address space.

Peripheral integration centers on real-time I/O coordination: twin 16-channel CAPCOM units drive PWM and capture timing with 50 ns interrupt latency; GPT12E provides five general-purpose timers; TwinCAN enables distributed control messaging; and SDLM supports legacy J1850 Class 2 diagnostics-making it suitable for ECU-level consolidation in automotive body and powertrain systems.

Key Specifications

Pinout & Package

XC161CJ16F40FBBFXUMA1 is housed in a 144-pin Green TQFP package (RoHS compliant) with 0.5 mm pitch, optimized for thermal dissipation (R_ΘJC, R_ΘJL specified) and high-density PCB layout in automotive ECUs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with XC161CJ16F40FBBFXUMA1, the XC2267 offers higher performance and CAN FD but requires architectural rework, while the XC164CS retains pin compatibility at the cost of TwinCAN, SDLM, and Flash capacity-making it viable only for scaled-down implementations.

Availability

XC161CJ16F40FBBFXUMA1 is available at Aetrix Electronics and suitable for automotive powertrain ECUs, industrial servo drives, commercial vehicle body controllers, and off-highway telematics gateways requiring stable component supply across extended temperature and long lifecycle demands.

Supply support for XC161CJ16F40FBBFXUMA1 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 ICs, and security solutions, with global R&D and manufacturing infrastructure.

The XC161 family was designed specifically for deterministic real-time control in automotive and industrial applications-emphasizing low-latency interrupt response, integrated CAN networking, and robust operation across harsh environmental conditions.

FAQ

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

The XC161CJ16F40FBBFXUMA1 achieves a maximum CPU clock of 40 MHz, resulting in a 25 ns instruction cycle time for single-cycle execution. This timing is guaranteed across the full –40 °C to +125 °C temperature range and 4.5–5.5 V supply, as verified in Section 4.4.1 of the V2.4 datasheet.

Does this microcontroller support CAN FD or only classical CAN?

The XC161CJ16F40FBBFXUMA1 implements TwinCAN Rev. 2.0B only, supporting Classical CAN (ISO 11898-1) at up to 1 Mbit/s with full and basic CAN modes. It does not support CAN FD features such as flexible data-rate or extended data length-those require later Infineon families like the Aurix TC2xx series.

Is the on-chip Flash memory field-programmable and wear-leveling capable?

The 128 KB Flash supports in-system programming via JTAG or bootstrap loader, with endurance rated at ≥10,000 write/erase cycles per sector and data retention of ≥20 years at 125 °C. Wear leveling is not implemented in hardware; it must be managed by firmware using the provided Flash API and sector protection mechanisms.

What debug interfaces are supported, and is JTAG sufficient for real-time tracing?

JTAG is fully supported for boundary scan, flash programming, and On-Chip Debug Support (OCDS) including breakpoints, watchpoints, and real-time variable monitoring. However, the XC161CJ lacks dedicated trace ports (e.g., ETM); real-time instruction trace requires external logic analyzers synchronized to OCDS signals-not full streaming trace as found in newer architectures.