Infineon Technologies C167CSL16M3VCAFXQLA1

Overview

C167CSL16M3VCAFXQLA1 from Infineon Technologies is a low-power 16-bit single-chip microcontroller featuring a 4-stage pipeline CPU (125 ns instruction cycle at 16 MHz), dual CAN 2.0B interfaces with 30 total message objects, 24-channel 10-bit ADC (7.8 µs conversion time), and 144-pin MQFP package. It targets automotive body control modules requiring real-time I/O, CAN communication, and deterministic interrupt response.

For engineers reviewing the C167CSL16M3VCAFXQLA1 datasheet, C167CSL16M3VCAFXQLA1 pinout, C167CSL16M3VCAFXQLA1 application, or C167CSL16M3VCAFXQLA1 equivalent, key selection criteria include on-chip PLL clock generation (1.5×–5× multiplication), 3 KB IRAM + 8 KB XRAM memory architecture, 16-priority-level interrupt system (62 ns sample rate), and dual-CAN bus arbitration capability.

Technical Context

The C167CSL16M3VCAFXQLA1 implements a register-based 16-bit CPU with single-cycle context switching support and 16 MByte linear address space. Its peripheral event controller (PEC) enables interrupt-driven, single-cycle data transfers across eight channels independent of CPU intervention.

On-chip clock generation uses a programmable PLL with selectable multiplication factors (1.5, 2, 2.5, 3, 4, 5) and supports direct external clock input or prescaler configuration. Dual CAN controllers operate in Full CAN/Basic CAN modes, sharing one physical bus with 30 message objects via hardware arbitration.

Key Specifications

Pinout & Package

Package: 144-pin MQFP (Metric Quad Flat Package), 20 mm × 20 mm, 0.5 mm pitch.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SAB-C167CS-L16M3V and C167CS-L16M3V-80, the C167CSL16M3VCAFXQLA1 provides full automotive-grade temperature qualification (−40°C to +125°C), flash-programmable memory, and guaranteed 125°C operation-critical for engine bay and safety-critical modules.

Availability

C167CSL16M3VCAFXQLA1 is available at Aetrix Electronics and suitable for automotive body control units, industrial CAN gateways, motor drive safety monitors, and energy meter data aggregators requiring stable component supply across extended product lifecycles.

Supply support for C167CSL16M3VCAFXQLA1 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 electronics, and security solutions, with global R&D and manufacturing infrastructure.

The C166/C167 family was designed for real-time embedded control in automotive and industrial environments, emphasizing deterministic interrupt handling, integrated CAN, and low-power operation under harsh electrical conditions.

FAQ

What is the maximum operating temperature rating for C167CSL16M3VCAFXQLA1?

The C167CSL16M3VCAFXQLA1 is qualified for operation from −40°C to +125°C ambient temperature per AEC-Q100 Grade 2 standards. This rating applies to the full functional specification including CPU performance, ADC accuracy, CAN timing, and I/O drive strength. Thermal derating is not required within this range.

Does C167CSL16M3VCAFXQLA1 support in-system programming (ISP)?

Yes, it supports in-system programming via its on-chip bootstrap loader using UART or CAN interfaces. Firmware updates can be performed without removing the device from the PCB, provided the application reserves memory pages for bootloader execution and validates checksums before committing new code.

How many independent CAN message buffers does the device provide?

The device provides two independent CAN controllers, each with 15 message objects (30 total). These can be configured for separate buses or share one physical bus using hardware arbitration logic, enabling up to 30 concurrent message objects on a single CAN network segment.

Is external memory expansion supported, and what bus widths are available?

Yes, the device supports up to 16 MBytes of external memory via a programmable external bus interface. It supports both multiplexed and demultiplexed configurations with 8-bit or 16-bit data bus widths, five chip-select signals, and configurable wait-state generation per address range.