Infineon Technologies C161SLM3VAABXUMA1

Overview

C161SLM3VAABXUMA1 from Infineon Technologies is a 16-bit single-chip microcontroller in the C166 family, operating at 20 MHz with 3.0–3.6 V supply, featuring 2 KB on-chip IRAM, 16 Mbyte linear address space, and an integrated PLL clock generator. It delivers 12.5 MIPS, supports real-time control in industrial motor drives, and integrates two serial channels, RTC, and eight-channel PEC for deterministic data transfer.

For engineers reviewing the C161SLM3VAABXUMA1 datasheet, C161SLM3VAABXUMA1 pinout, C161SLM3VAABXUMA1 application, or C161SLM3VAABXUMA1 equivalent, key selection factors include its 80-pin MQFP package, 3 V operation, 16-priority interrupt system with 40 ns sample rate, and bootstrap loader support for field firmware updates.

Technical Context

The C161SLM3VAABXUMA1 implements a 4-stage pipelined 16-bit CPU with register-based architecture, enabling single-cycle context switching and enhanced bit manipulation for real-time OS support. Its peripheral event controller (PEC) provides interrupt-driven, single-cycle data transfers across eight channels, decoupling CPU load from high-frequency I/O events.

On-chip clock generation uses a programmable PLL with selectable multiplication factors (1.5× to 5×), supporting flexible system timing without external frequency synthesizers. The device supports both multiplexed and demultiplexed external buses with four chip-select signals, enabling up to 16 MB total external address space when all windows are active.

Key Specifications

Pinout & Package

80-pin MQFP (Metric Quad Flat Package), 14 × 20 mm body, 0.65 mm lead pitch, thermally enhanced plastic encapsulation suitable for industrial temperature range (-40 to +85 °C).

Key Features

Applications

Equivalent & Alternatives

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

Compared with C161SLM3VAABXUMA1, the SAB-C161S-L25M trades voltage compatibility for speed, while SAF-C161S-LM3V offers identical functionality with broader thermal qualification - making it a drop-in upgrade for harsh-environment deployments.

Availability

C161SLM3VAABXUMA1 is available at Aetrix Electronics and suitable for industrial motor control, energy metering, building automation panels, and PLC I/O modules requiring stable component supply and long-term lifecycle assurance.

Supply support for C161SLM3VAABXUMA1 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 C166 family - including the C161S derivative - was designed for cost-sensitive, real-time embedded control applications demanding high peripheral integration, deterministic interrupt response, and robust industrial temperature operation.

FAQ

What is the operating temperature range for C161SLM3VAABXUMA1?

The C161SLM3VAABXUMA1 is rated for 0 to +70 °C ambient operation. This specification is confirmed in Table 1 of the November 2003 datasheet under the SAB-C161S-LM3V derivative listing, which matches the ordering code's "AAB" temperature grade identifier.

Does C161SLM3VAABXUMA1 include on-chip flash memory?

No. The C161SLM3VAABXUMA1 contains 2 KB of on-chip SRAM (IRAM) but no embedded flash or ROM. Code execution relies on external memory mapped via the 16 MB linear address space, or on external mask-ROM versions like SAB-C161S-LM3V which use factory-programmed ROM.

Can the PLL generate a 20 MHz system clock from a 4 MHz crystal?

Yes. The on-chip PLL supports multiplication factors of 1.5×, 2×, 2.5×, 3×, 4×, and 5×. A 4 MHz crystal multiplied by 5× yields exactly 20 MHz, matching the device's maximum operating frequency and satisfying the required clock specification.

Is there hardware support for CAN bus communication?

No. The C161SLM3VAABXUMA1 does not integrate a CAN controller or transceiver. Its two serial channels support only asynchronous UART, synchronous SPI-like, and high-speed synchronous protocols - CAN functionality requires external CAN controller ICs such as the Infineon TLE6250 or standalone SJA1000.