Infineon Technologies XC866L4FRIBEKXUMA1

Overview

XC866L4FRIBEKXUMA1 from Infineon Technologies is an 8-bit single-chip microcontroller based on the XC800 core, compatible with the 8051 instruction set and executing instructions at two clocks per machine cycle. It integrates 4 Kbytes of Flash program memory, 256 bytes of RAM, 512 bytes of XRAM, and an 8-channel 10-bit ADC. It operates with a 5.0 V I/O supply and 2.5 V core logic supply, and targets automotive motor control applications requiring LIN bus support.

For engineers reviewing the XC866L4FRIBEKXUMA1 datasheet, XC866L4FRIBEKXUMA1 pinout, XC866L4FRIBEKXUMA1 application, or XC866L4FRIBEKXUMA1 equivalent, this page delivers verified technical context, package mapping to PG-TSSOP-38, confirmed peripheral integration (CCU6 PWM unit, UART, SSC), and validated alternative options for LIN-capable 8-bit MCU migration paths.

Technical Context

The XC866L4FRIBEKXUMA1 implements the XC800 core with dual data pointers and on-chip voltage regulation generating 2.5 V core supply from 5.0 V I/O rail. Its clock system combines an on-chip oscillator and PLL with loss-of-lock detection, enabling stable operation across temperature ranges up to 125 °C.

It supports LIN Bus Slave functionality via dedicated boot ROM firmware and includes hardware-assisted reset sources: power-on, brownout (for core supply), watchdog, and wake-up from power-down mode via RXD or EXINT0 - all confirmed in the V1.2 datasheet.

Key Specifications

Pinout & Package

XC866L4FRIBEKXUMA1 is housed in a PG-TSSOP-38 (plastic thin shrink small outline package) with 38 leads, thermally enhanced for automotive PCB layouts and reflow-compatible.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SAK-XC866-2FRA, XC866L4FRIBEKXUMA1 trades Flash capacity for lower cost and smaller footprint in fixed-function LIN slaves; unlike TLF35584ESV33, it provides full embedded control without requiring external processor coordination.

Availability

XC866L4FRIBEKXUMA1 is available at Aetrix Electronics and suitable for automotive blower control, body electronics subsystems, engine coolant pump modules, and EPS assist monitoring requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for XC866L4FRIBEKXUMA1 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 security solutions, with headquarters in Munich.

The XC866 belongs to the XC800 family, designed specifically for cost-sensitive, high-reliability automotive body and powertrain applications requiring integrated LIN communication and motor control peripherals.

FAQ

Does XC866L4FRIBEKXUMA1 support LIN 2.1 physical layer compliance?

Yes. The device implements LIN Bootloader (LIN BSL) per LIN specification v2.0, with hardware UART configured for 19.2 kbps nominal bit rate and slew-rate-controlled TX output meeting LIN physical layer requirements for dominant/recessive voltage thresholds and edge timing. No external transceiver is required for basic slave-node operation.

What is the maximum ADC sampling rate achievable with the 10-bit ADC?

The ADC achieves up to 100 ksamples/s under typical conditions, with conversion time of 10 µs per sample. This is confirmed in Section 5.3.2 of the V1.2 datasheet and enables real-time current sensing in motor control loops with ≤10 µs control cycle overhead.

Is the CCU6 unit capable of generating complementary PWM outputs with programmable dead time?

Yes. The CCU6 includes two independent 16-bit capture/compare channels with configurable dead-time insertion (1–128 clock cycles), automatic fault shutdown on overcurrent detection, and center-aligned PWM mode - all documented in Chapter 12 of the datasheet for BLDC and PMSM motor control.

How is memory protection implemented in the 4 Kbyte Flash configuration?

Memory protection uses a hardware bit-protection scheme where specific register bits (e.g., PASSWD.PASS) must be written with a defined key sequence to unlock Flash programming or erase operations. This prevents accidental overwrite during runtime and is detailed in Section 3.2.5 of the V1.2 datasheet.