Infineon Technologies SAF-XC836T-2FRIAB

Overview

SAF-XC836T-2FRIAB 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, and a 16-bit CCU6 for PWM generation. It operates across -40 °C to +85 °C and targets motor control in automotive body electronics.

For engineers reviewing the SAF-XC836T-2FRIAB datasheet, SAF-XC836T-2FRIAB pinout, SAF-XC836T-2FRIAB application, or SAF-XC836T-2FRIAB equivalent, key selection criteria include its integrated 16-bit vector computer (MDU + CORDIC) for field-oriented control, on-chip 48 MHz oscillator with loss-of-clock detection, real-time clock with 32.768 kHz crystal pad, and PG-TSSOP-28 package with 28-pin I/O mapping.

Technical Context

The XC836 implements a two-clock-per-cycle 8051-compatible core with dual data pointers and embedded voltage regulation delivering 2.5 V to core logic while supporting I/O supply from 2.5 V to 5.5 V. Its peripheral set includes three 16-bit timers (T0/T1/T2), a programmable watchdog timer with independent oscillator and windowed refresh, and a capture/compare unit (CCU6) optimized for motor phase timing and dead-time insertion.

It features a dedicated LED and touch-sense controller (LEDTSCU), synchronous serial channel (SSC) supporting master/slave modes, and UART with full/half-duplex operation. The 10-bit ADC supports up to seven differential channels and digital filtering for effective resolution up to 13 bits, with eight out-of-range comparators for fast threshold monitoring.

Key Specifications

Pinout & Package

SAF-XC836T-2FRIAB 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. Pin functions are defined per Infineon DS V1.4 Section 2.3–2.4.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SAF-XC836T-2FRIAB, the SAK variant extends temperature range without altering electrical behavior or software compatibility, while the XC836-2FRA sacrifices RTC capability and I/O count for smaller footprint-making SAF-XC836T-2FRIAB optimal for cost-sensitive, thermally moderate motor control with timekeeping needs.

Availability

SAF-XC836T-2FRIAB is available at Aetrix Electronics and suitable for automotive HVAC systems, industrial BLDC drives, and smart appliance motor control requiring stable component supply and long-term industrial lifecycle support.

Supply support for SAF-XC836T-2FRIAB 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 microcontrollers, and security solutions, with global R&D and manufacturing infrastructure.

The XC836 belongs to Infineon's XC800 family, designed specifically for cost-optimized, high-reliability 8-bit motor control in automotive body electronics and industrial motion systems.

FAQ

Does SAF-XC836T-2FRIAB support in-system programming via UART?

No. In-system programming requires the single-pin SPD (Serial Programming and Debug) interface, which uses a proprietary protocol distinct from UART. UART is reserved for application-level communication only; SPD handles flash erase/write and debug access with dedicated hardware state machines.

What is the maximum ADC sampling rate with digital filtering enabled?

With digital low-pass filtering active, the effective sampling rate is 100 kSPS. Without filtering, the ADC achieves up to 500 kSPS. Filtering trades speed for enhanced noise rejection and extended effective resolution (up to 13 bits), as verified in Section 3.2.3 of the datasheet.

Can the CCU6 generate asymmetric PWM waveforms for advanced motor commutation?

Yes. CCU6 supports independent duty-cycle and dead-time configuration per output channel, enabling asymmetric center-aligned PWM required for sensorless FOC algorithms. Each compare register pair (e.g., CC60/CC61) can be updated dynamically during runtime without interrupt latency.

Is the 48 MHz on-chip oscillator stable enough for UART baud rate generation?

Yes. The 48 MHz RC oscillator has ±2 % accuracy over temperature and voltage, sufficient for UART operation up to 115.2 kbps with automatic baud rate error compensation in firmware. For higher precision, the SSC or UART can be clocked from the 32.768 kHz RTC oscillator via prescaler.