Infineon Technologies KX161CS32F40FBBANT

Overview

KX161CS32F40FBBANT from Infineon Technologies is a 16-bit single-chip microcontroller based on the C166SV2 core, featuring 256 KB on-chip Flash, 12 KB total SRAM (2 KB DPRAM + 4 KB DSRAM + 6 KB PSRAM), and operation up to 40 MHz CPU clock. It integrates TwinCAN (Rev. 2.0B), dual ASC/SSC interfaces, 12-channel 10-bit ADC (2.55 µs conversion), and supports automotive-grade temperature range (−40 °C to +125 °C) in a 144-pin TQFP package. Used in engine control units and industrial motion controllers requiring deterministic real-time I/O handling.

For engineers reviewing the KX161CS32F40FBBANT datasheet, KX161CS32F40FBBANT pinout, KX161CS32F40FBBANT application, or KX161CS32F40FBBANT equivalent, key selection criteria include CAN 2.0B dual-node support, 50 ns interrupt sample rate, on-chip PLL with 1:0.15–1:10 multiplication, 16-priority-level interrupt system, and RoHS-compliant green TQFP-144 packaging with 0.5 mm pitch.

Technical Context

The XC161CS-32F implements a 5-stage pipelined C166SV2 CPU core delivering single-cycle execution for most instructions, including 1-cycle 16×16 multiply and MAC operations. Its memory subsystem includes separate 2 KB dual-port RAM for concurrent CPU/peripheral access and 6 KB program/data SRAM with configurable wait-state control via IMBCTRL register.

Peripheral integration centers on deterministic real-time control: the GPT12E timer unit provides five independent timers with capture/compare capability; CAPCOM1/2 offer 32 I/O pins across two 16-channel units; TwinCAN supports 32 message objects per node with gateway functionality between CAN0 and CAN1; and the A/D converter offers programmable resolution (8-/10-bit) and conversion time down to 2.55 µs at full resolution.

Key Specifications

Pinout & Package

Package: 144-pin Thin Quad Flat Package (TQFP), RoHS-compliant green molding compound, 0.5 mm lead pitch, body size 20 mm × 20 mm.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SAK-XC2267-104F80F, KX161CS32F40FBBANT offers lower power and smaller memory footprint ideal for cost-sensitive ECUs; versus SAF-XC164CS-32F40F, it trades slightly lower ESD rating for broader legacy toolchain compatibility and mature production availability.

Availability

KX161CS32F40FBBANT is available at Aetrix Electronics and suitable for engine control units, industrial motion controllers, automotive body control modules, and energy metering gateways requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for KX161CS32F40FBBANT 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, headquartered in Munich with global design and manufacturing infrastructure.

The XC161 family was engineered specifically for deterministic real-time control in automotive powertrain and chassis systems, emphasizing low-latency interrupt handling, integrated CAN networking, and high-reliability operation across extended temperature ranges.

FAQ

What is the maximum operating frequency of the KX161CS32F40FBBANT CPU core?

The C166SV2 core operates at up to 40 MHz CPU clock frequency, achieving a 25 ns instruction cycle time with single-cycle execution for most instructions. This frequency is sustained using the on-chip PLL configured with multiplication factors from 1:0.15 to 1:10, and requires proper Flash wait-state configuration (WSFLASH bits in IMBCTRL) to match access timing.

Does the KX161CS32F40FBBANT support CAN FD or only classical CAN?

The KX161CS32F40FBBANT implements TwinCAN compliant with ISO 11898-1:2003 (CAN 2.0B active), supporting standard 11-bit identifiers and extended 29-bit identifiers at bit rates up to 1 Mbit/s. It does not support CAN FD features such as flexible data-rate or extended payload length; its CAN modules are strictly classical CAN with 32 message objects per node.

How is the 12-channel ADC calibrated and what accuracy is guaranteed?

The ADC includes factory-trimmed offset and gain calibration stored in on-chip Flash; users apply these values via software during initialization. At 10-bit resolution, typical integral nonlinearity (INL) is ±0.5 LSB and differential nonlinearity (DNL) is ±0.3 LSB over the full temperature range (−40 °C to +125 °C), with conversion time fixed at 2.55 µs per channel.

Can the KX161CS32F40FBBANT operate without an external crystal?

Yes - the device supports both external crystal (via XTAL1/XTAL3) and external clock input modes. When no crystal is used, a CMOS-level clock signal (1–20 MHz) may be applied directly to XTAL1, while XTAL3 is left unconnected or tied to VDDI. The on-chip PLL remains functional in either configuration, enabling precise clock synthesis for CPU and peripheral domains.