Infineon Technologies C167CSL40MCABXQLA2

Overview

C167CSL40MCABXQLA2 from Infineon Technologies is a 16-bit single-chip microcontroller with 32 KB on-chip mask ROM, 40 MHz maximum CPU clock (25 ns instruction cycle), dual CAN 2.0B interfaces, 24-channel 10-bit ADC, and 111 GPIO lines. It integrates PLL-based clock generation, PEC-driven DMA, real-time clock, and programmable power modes for industrial motor control and automotive body electronics.

For engineers reviewing the C167CSL40MCABXQLA2 datasheet, C167CSL40MCABXQLA2 pinout, C167CSL40MCABXQLA2 application, or C167CSL40MCABXQLA2 equivalent, key selection criteria include CAN message object count (30 total), IRAM/XRAM allocation (3 KB/8 KB), PLL multiplication factors (1.5× to 5×), and MQFP-144 package compatibility with legacy C166-family toolchains.

Technical Context

The C167CSL40MCABXQLA2 implements a 4-stage pipelined 16-bit CPU supporting single-cycle context switching, register bank switching, and HLL-optimized instructions. Its peripheral event controller (PEC) enables interrupt-driven, single-cycle data transfers across eight channels without CPU intervention.

Two independent CAN controllers (Rev. 2.0B active) support full-CAN and basic-CAN operation on one bus with up to 30 message objects. The on-chip PLL accepts external crystal inputs (1–20 MHz) and generates internal clocks at 1.5× to 5× multiplication factors, enabling precise timing control for motor commutation and sensor sampling.

Key Specifications

Pinout & Package

Package: MQFP-144 (144-pin metric quad flat pack), lead pitch 0.5 mm, body size 20.0 × 20.0 mm, RoHS-compliant per Infineon's 2001 specification.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SAK-C167CS-4R40M (identical functionality, different packaging) and C167CR-L40M (single CAN, otherwise identical), the C167CSL40MCABXQLA2 delivers full dual-CAN capability in MQFP-144 with tape-and-reel delivery, making it optimal for automotive and industrial CAN FD-ready designs requiring traceability and volume procurement support.

Availability

C167CSL40MCABXQLA2 is available at Aetrix Electronics and suitable for industrial motor control, automotive body electronics, factory automation I/O modules, and power supply monitoring systems requiring stable component supply and long-term lifecycle assurance.

Supply support for C167CSL40MCABXQLA2 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 microcontrollers, with global R&D and manufacturing infrastructure.

The C167CS family was designed as a high-performance evolution of the C166 architecture for real-time embedded applications demanding integrated CAN, rich analog peripherals, and deterministic interrupt response in industrial and automotive environments.

FAQ

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

The C167CSL40MCABXQLA2 operates at up to 40 MHz CPU clock, delivering a 25 ns instruction cycle time. This timing is confirmed in the V2.2 datasheet (page 59, clock parameters adjusted) and enables execution of complex control algorithms within tight real-time deadlines.

Does this microcontroller support CAN FD or only classical CAN?

The C167CSL40MCABXQLA2 implements CAN 2.0B (Classical CAN) only, with two independent controllers supporting full-CAN and basic-CAN modes. It does not support CAN FD features such as variable bit rate or extended data length, as confirmed by the "Controller Area Network (CAN): License of Robert Bosch GmbH" statement and Rev. 2.0B designation in the datasheet.

How much on-chip RAM is available for runtime variables and stack usage?

The device provides 3 KB of on-chip internal RAM (IRAM) and 8 KB of extension RAM (XRAM), both directly accessible without wait states. IRAM is typically used for critical variables and ISR stacks, while XRAM serves as general-purpose buffer space, as specified in the "On-Chip Memory Modules" section of the datasheet (page 2).

Is the bootstrap loader accessible via standard UART pins without additional hardware?

Yes - the on-chip bootstrap loader uses P3.10 (TxD0) and P3.11 (RxD0) for serial firmware loading at standard baud rates. No external programming hardware is required; only a UART-to-USB adapter and Infineon's BSL utility are needed, as documented in the "On-Chip Bootstrap Loader" feature list (page 2).