Infineon Technologies C167SRLMHAKXQLA2

Overview

C167SRLMHAKXQLA2 from Infineon Technologies is a 16-bit single-chip microcontroller with 2 KB on-chip XRAM, 25 MHz CPU clock, and integrated CAN 2.0B interface supporting 15 message objects. It features an on-chip PLL (configurable at ×1.5/2/2.5/3/4/5), 16-channel 10-bit A/D converter (7.8 µs min conversion time), and dual CAPCOM units for motor control timing. Used in industrial motor drives requiring deterministic real-time I/O and fieldbus connectivity.

For engineers reviewing the C167SRLMHAKXQLA2 datasheet, C167SRLMHAKXQLA2 pinout, C167SRLMHAKXQLA2 application, or C167SRLMHAKXQLA2 equivalent, key selection criteria include CAN protocol compliance, 16-bit deterministic interrupt latency (40 ns sample rate), external bus arbitration support, and mask-ROM-based firmware immutability for safety-critical embedded control.

Technical Context

The C167SRLMHAKXQLA2 implements a 4-stage pipelined C166-family CPU core with register-based architecture, single-cycle context switching, and 16 Mbyte linear address space. Its peripheral set includes two synchronous/asynchronous serial channels, a 4-channel PWM unit with dead-time insertion, and dual GPT units providing five independent timers for multi-axis motion control sequencing.

It integrates a dedicated CAN 2.0B controller with full-CAN capability, 15 configurable message objects, and automatic retransmission logic-enabling robust node-level communication without host CPU intervention. The A/D converter supports programmable sampling windows and hardware-triggered conversions synchronized to PWM events.

Key Specifications

Pinout & Package

Package: P-MQFP-144-8 (144-pin plastic metric quad flat pack, 20.0 × 20.0 mm body, 0.5 mm lead pitch).

Key Features

Applications

Equivalent & Alternatives

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

Compared with C167CR-LM and C167CR-16RM, the C167SRLMHAKXQLA2 offers ROMless operation for flexible bootloader integration and external code execution-critical for field-updatable motor control firmware while retaining identical real-time peripheral timing and CAN messaging capabilities.

Availability

C167SRLMHAKXQLA2 is available at Aetrix Electronics and suitable for industrial motor drives, automated assembly stations, and building HVAC controllers requiring stable component supply and long-term obsolescence management.

Supply support for C167SRLMHAKXQLA2 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 headquarters in Munich and global manufacturing and R&D facilities.

The C167SR derivative belongs to Infineon's legacy C166 microcontroller family, designed specifically for deterministic real-time control in factory automation, motion systems, and embedded CAN networks where cycle-accurate timing and peripheral integration are critical.

FAQ

Does C167SRLMHAKXQLA2 support external memory expansion?

Yes, it supports up to 16 Mbytes of external address space with programmable bus timing, five chip-select outputs, and configurable 8-/16-bit data bus width. External memory can be mapped into code or data space using the External Bus Controller, enabling seamless integration of Flash, SRAM, or FPGA peripherals without address decoding logic.

What is the role of the Peripheral Event Controller (PEC)?

The PEC is an 8-channel hardware data mover that performs single-cycle transfers between peripherals and memory without CPU involvement. It handles tasks like automatic ADC result storage, PWM register updates, and serial buffer loading-reducing interrupt load and ensuring jitter-free timing for time-critical control loops.

Is CAN communication handled entirely in hardware?

Yes, the on-chip CAN module implements full CAN 2.0B protocol handling-including bit arbitration, error detection/correction, message filtering, and automatic retransmission-without CPU firmware intervention. Fifteen message objects are managed by dedicated hardware registers, enabling concurrent transmission and reception of standard/extended frames.

Can the internal PLL be bypassed for direct clock input?

Yes, the PLL can be disabled to accept an external clock signal directly at the XTAL1 pin. This mode supports clock sources from 1 MHz to 25 MHz and is used when precise external timing synchronization (e.g., to a master system clock) or reduced EMI is required-bypassing PLL jitter while retaining full peripheral functionality.