Infineon Technologies XC835MT2FGIABFXUMA1

Overview

XC835MT2FGIABFXUMA1 from Infineon Technologies is an 8-bit single-chip microcontroller based on the XC800 core, compatible with the standard 8051 instruction set and executing instructions at two clocks per machine cycle. It integrates 8 KB Flash, 256 bytes RAM, 256 bytes XRAM, a 10-bit 8-channel ADC, three 16-bit timers, UART, SSC, I²C, LED/touch-sense controller, and a real-time clock with 32.768 kHz crystal support. It targets motor control and embedded sensing applications requiring deterministic timing and low-power operation.

For engineers reviewing the XC835MT2FGIABFXUMA1 datasheet, XC835MT2FGIABFXUMA1 pinout, XC835MT2FGIABFXUMA1 application, or XC835MT2FGIABFXUMA1 equivalent, key selection criteria include its 48 MHz on-chip oscillator, independent watchdog timer with windowed refresh, 16-bit vector computer (MDU + CORDIC) for field-oriented control, and PG-TSSOP-28 package with 28-pin digital/analog I/O mapping.

Technical Context

The XC835MT2FGIABFXUMA1 implements a two-clock-per-cycle 8051-compatible core with dual data pointers and on-chip voltage regulation delivering 2.5 V to the core from a 2.5–5.5 V I/O supply. Its peripheral set includes a Capture/Compare Unit (CCU6) for PWM generation, a dedicated LED and touch-sense controller (LEDTSCU), and a synchronous serial channel (SSC) supporting both master and slave modes with configurable timing.

It features a 10-bit ADC with up to 7 differential input channels and optional digital filtering yielding up to 13-bit effective resolution, alongside an 8-channel out-of-range comparator. The real-time clock operates from an external 32.768 kHz crystal, and the watchdog timer runs on a separate oscillator with programmable warning and windowed refresh capability.

Key Specifications

Pinout & Package

XC835MT2FGIABFXUMA1 is housed in a PG-TSSOP-28 (plastic thin shrink small outline package) with 28 leads, 0.65 mm pitch, and exposed thermal pad for improved heat dissipation in motor control and power-constrained applications.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 8-bit motor control microcontroller applications.

Compared with XC835MT2FGIABFXUMA1, the XC836M-2FRA offers identical core and memory but sacrifices RTC integration and package thermal performance, while the TC1766 delivers higher compute throughput at significantly increased cost, complexity, and power - making the XC835 optimal for compact, thermally demanding, time-aware motor control.

Availability

XC835MT2FGIABFXUMA1 is available at Aetrix Electronics and suitable for motor control systems, industrial sensor nodes, automotive body electronics, and appliance control units requiring stable component supply and long-term lifecycle support.

Supply support for XC835MT2FGIABFXUMA1 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 MCUs, and security solutions, with global R&D and manufacturing infrastructure.

The XC800 family - including XC835 - was designed specifically for cost-sensitive, high-reliability 8-bit motor control and embedded sensing applications, emphasizing integrated analog peripherals, low-power operation, and field-oriented control acceleration.

FAQ

What is the maximum operating frequency of the XC835MT2FGIABFXUMA1 core?

The XC835MT2FGIABFXUMA1 uses a two-clocks-per-machine-cycle architecture derived from the 8051 core. Its on-chip 48 MHz oscillator feeds the CPU directly, enabling a maximum instruction execution rate of 24 MIPS. This frequency is fully supported across the SAK temperature range (−40 °C to +125 °C) with appropriate voltage and decoupling.

Does XC835MT2FGIABFXUMA1 support in-system programming via the SPD interface?

Yes. The Single-Pin Debug (SPD) interface supports full in-system programming and debugging using asynchronous serial communication. It requires only one GPIO pin, no external level shifter, and is compatible with Infineon's DAP protocol - enabling firmware updates and real-time variable inspection without halting peripheral operation.

Can the 10-bit ADC operate in differential mode on all channels?

No. The ADC supports up to seven differential input pairs (e.g., CH0–CH1, CH2–CH3, etc.), but not all eight channels can be used simultaneously in differential mode. Channel 7 is single-ended only. Differential mode requires pairing adjacent channels and configuring the ADC control register accordingly - verified in Section 3.2.3 of the V1.4 datasheet.

Is the RTC function dependent on an external 32.768 kHz crystal?

Yes. The real-time clock requires an external 32.768 kHz tuning-fork crystal connected between XTAL1 and XTAL2 pins. The internal circuitry provides load capacitance and bias current; no additional components are needed. Operation is guaranteed across the full SAK temperature range, with typical accuracy of ±20 ppm at 25 °C.