Infineon Technologies C167CRLMHAKXUMA2

Overview

C167CRLMHAKXUMA2 from Infineon Technologies is a 16-bit single-chip microcontroller with 128 KB on-chip mask ROM, 2 KB internal RAM, and 2 KB XRAM, operating at 25 MHz CPU clock (40 ns instruction cycle), featuring integrated CAN 2.0B interface, 16-channel 10-bit ADC (7.8 µs conversion time), and dual CAPCOM units for motor control in industrial drives.

For engineers reviewing the C167CRLMHAKXUMA2 datasheet, C167CRLMHAKXUMA2 pinout, C167CRLMHAKXUMA2 application, or C167CRLMHAKXUMA2 equivalent, key selection criteria include its 144-pin MQFP package, PLL-based clock generation (×1.5 to ×5), 16-priority interrupt system with 56 sources, and support for external bus expansion up to 16 MB - critical for real-time embedded control systems requiring deterministic timing and peripheral integration.

Technical Context

The C167CRLMHAKXUMA2 implements a 4-stage pipelined 16-bit CPU with register-based architecture, single-cycle context switching, and enhanced Boolean bit manipulation instructions optimized for real-time control firmware. Its memory map provides unified 16 MB linear address space for code and data, with on-chip ROM configured as non-volatile program storage and IRAM/XRAM allocated for stack, variables, and peripheral buffers.

Peripheral subsystems are tightly coupled via the Peripheral Event Controller (PEC), enabling interrupt-driven, single-cycle data transfers between ADC, PWM, CAPCOM, and serial channels without CPU intervention. The integrated CAN module supports full CAN protocol (15 message objects) and operates concurrently with other timers and I/O functions under deterministic interrupt latency down to 40 ns.

Key Specifications

Pinout & Package

Package: P-MQFP-144-8 - 144-pin plastic metric quad flat pack with exposed thermal pad, compliant with JEDEC MS-026, suitable for convection- and reflow-soldered industrial PCBs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SAB-C167CR-16R33M and SAK-C167CR-4RM, the C167CRLMHAKXUMA2 delivers optimal balance of program storage (128 KB), deterministic 25 MHz real-time performance, and industrial I/O integration - making it the preferred choice for complex, field-deployed control systems where firmware scalability and timing predictability are jointly critical.

Availability

C167CRLMHAKXUMA2 is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, and programmable logic controller I/O modules requiring stable component supply and long-term obsolescence management.

Supply support for C167CRLMHAKXUMA2 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 industrial microcontrollers, with global R&D and manufacturing infrastructure.

The C167CR family was designed for deterministic real-time control in harsh industrial and automotive environments, emphasizing integrated peripherals, robust clock supervision, and long-lifecycle support for embedded systems.

FAQ

Does C167CRLMHAKXUMA2 support in-system programming?

No - it contains mask-programmed ROM, not flash or EEPROM. Firmware is fixed at fabrication and cannot be rewritten in the field. Field updates require the on-chip bootstrap loader to load new code into IRAM/XRAM via UART, but persistent storage remains immutable. This ensures functional safety and anti-tampering compliance in certified industrial applications.

What is the maximum allowed external memory access speed?

The external bus controller supports programmable wait states and timing parameters per chip-select region. At 25 MHz CPU clock, maximum reliable access to 8-bit or 16-bit external memory is 12.5 MHz (two-clock-cycle read/write), verified per Section 4.4.4 of the V3.3 datasheet. Higher speeds require careful PCB layout and termination to meet setup/hold timing.

Is CAN communication compatible with ISO 11898-2 physical layer?

No - the C167CRLMHAKXUMA2 integrates only the CAN protocol controller (Rev. 2.0B), not the physical transceiver. It requires an external ISO 11898-2-compliant transceiver (e.g., TJA1040 or PCA82C251) for differential bus signaling, ESD protection, and common-mode noise rejection on automotive or industrial CAN networks.

Can the 10-bit ADC operate synchronously with PWM events?

Yes - the ADC trigger source can be configured to respond to CAPCOM or PWM timer overflow events, enabling precise time-aligned sampling of motor phase currents at known electrical angles. This synchronization is hardware-controlled and does not consume CPU cycles, ensuring jitter-free acquisition critical for field-oriented control.