Infineon Technologies XC836M2FRIABFXUMA1

Overview

XC836M2FRIABFXUMA1 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 with differential input support, three 16-bit timers, CCU6 PWM unit, UART, SSC, I²C, LED/touch-sense controller, and real-time clock with 32.768 kHz crystal pad - deployed in motor control and industrial sensor interface applications.

For engineers reviewing the XC836M2FRIABFXUMA1 datasheet, XC836M2FRIABFXUMA1 pinout, XC836M2FRIABFXUMA1 application, or XC836M2FRIABFXUMA1 equivalent, key selection considerations include its 48 MHz on-chip oscillator, dual supply architecture (I/O at 2.5–5.5 V, core at 2.5 V), integrated MDU/CORDIC for field-oriented control, and PG-TSSOP-28 package with SAK (-40 to +125 °C) temperature grade.

Technical Context

The XC836M2FRIABFXUMA1 implements an enhanced 8051-compatible CPU core with two data pointers and zero-wait-state memory access via its two-clock-per-cycle architecture. Its on-chip peripherals include a dedicated Capture/Compare Unit (CCU6) for high-resolution PWM generation, a 16-bit vector computer (MDU + CORDIC) optimized for motor control math, and a configurable 10-bit ADC supporting up to 7 differential channels with digital filtering for effective resolution up to 13 bits.

It features independent power domains: I/O ports operate from 2.5–5.5 V while the core logic is supplied by an internal 2.5 V regulator. Power management includes idle mode, power-down mode with RTC wake-up, and per-peripheral clock gating. Brownout detection is provided separately for I/O and core supplies, and loss-of-clock detection safeguards oscillator integrity.

Key Specifications

Pinout & Package

XC836M2FRIABFXUMA1 is housed in a PG-TSSOP-28 (Thermally Enhanced Thin Shrink Small Outline Package) with 28 leads, 0.65 mm pitch, and exposed thermal pad for improved heat dissipation in motor drive applications.

Key Features

Applications

Equivalent & Alternatives

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

Compared with XC836M2FRIABFXUMA1, the XC835 variant trades Flash capacity for lower unit cost, while the SAF-XC836-2FRA offers identical functionality in a smaller package and milder temperature grade - both require validation of memory layout and thermal derating in final design.

Availability

XC836M2FRIABFXUMA1 is available at Aetrix Electronics and suitable for motor control systems, industrial sensor nodes, automotive body electronics, and touch-enabled appliance UIs requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for XC836M2FRIABFXUMA1 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 industrial control ICs, with global R&D and manufacturing infrastructure.

The XC800 family was designed specifically for cost-effective, high-reliability 8-bit motor control and embedded sensing applications - emphasizing integrated analog peripherals, computational acceleration, and robust operation in harsh environments.

FAQ

What is the maximum operating frequency of the XC836M2FRIABFXUMA1 core?

The XC836M2FRIABFXUMA1 uses an enhanced 8051-compatible XC800 core that executes instructions at two clocks per machine cycle. Its on-chip oscillator runs at 48 MHz, yielding an effective instruction throughput of 24 MIPS. This frequency is fully supported across the full SAK temperature range (-40 °C to +125 °C) and does not require external clock sources for operation.

Does XC836M2FRIABFXUMA1 support in-system programming (ISP)?

Yes, XC836M2FRIABFXUMA1 supports ISP via its single-pin Debug Access Port (DAP), which uses asynchronous serial protocol over a dedicated pin. No external debugger or JTAG interface is required. Programming is performed using Infineon's DAPLoader tool and requires only VDD, GND, and the DAP signal - enabling field firmware updates without removing the device from the PCB.

How many ADC input channels can be used simultaneously with differential mode?

The XC836M2FRIABFXUMA1's 10-bit ADC supports up to seven differential input channel pairs (e.g., IN0–IN1, IN2–IN3, etc.), each selectable via the ADC channel control register. All seven differential configurations can be sequenced in hardware without CPU intervention using the ADC scan mode, allowing synchronized multi-channel sampling for current/voltage measurement in motor phase legs.

Is the RTC functional in power-down mode?

Yes, the real-time clock remains fully operational in power-down mode using its dedicated 32.768 kHz crystal oscillator. The RTC continues counting seconds, minutes, hours, and calendar date, and can generate periodic interrupts or wake-up events at programmable intervals (e.g., every second or every minute). This enables ultra-low-power timekeeping and scheduled wake-up for sensor polling or communication bursts.