Infineon Technologies XC866L4FRABEKXUMA1

Overview

XC866L4FRABEKXUMA1 from Infineon Technologies is an 8-bit single-chip microcontroller based on the XC800 core, compatible with the standard 8051 architecture and executing instructions at two clocks per machine cycle. It integrates 4 Kbytes of program Flash, 4 Kbytes of data Flash, 8 Kbytes of Boot ROM, 256 bytes of RAM, and 512 bytes of XRAM. It features an 8-channel 10-bit ADC, three 16-bit timers (T0/T1/T2), a Capture/Compare Unit (CCU6) for PWM generation, UART, SSC, and operates across –40 °C to 85 °C in automotive-grade SAF qualification.

For engineers reviewing the XC866L4FRABEKXUMA1 datasheet, XC866L4FRABEKXUMA1 pinout, XC866L4FRABEKXUMA1 application, or XC866L4FRABEKXUMA1 equivalent, this device supports LIN bootloader-enabled automotive body control modules, motor control timing-critical subsystems, and embedded sensor interface designs requiring integrated analog-to-digital conversion and deterministic real-time interrupt response.

Technical Context

The XC866L4FRABEKXUMA1 implements a two-clock-per-machine-cycle 8051-compatible core with dual data pointers and on-chip voltage regulation (2.5 V core supply from 3.3 V or 5.0 V I/O supply). Its CCU6 module delivers precise 16-bit PWM with dead-time insertion and capture capability for motor phase control.

It includes a dedicated LIN Bootloader (LIN BSL) supporting ISO 9141-2 and SAE J2602 protocols, enabling in-vehicle reprogramming via single-wire LIN bus. Reset sources include power-on, brownout (for 2.5 V core), watchdog, and wake-up from power-down mode via RXD or EXINT0.

Key Specifications

Pinout & Package

XC866L4FRABEKXUMA1 is housed in a PG-TSSOP-38 package - a 38-pin thin shrink small-outline package with 0.65 mm pitch, optimized for compact automotive PCB layouts and thermal performance in constrained enclosures.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SAK-XC866-2FRA and XC886CN-8FFI, XC866L4FRABEKXUMA1 uniquely combines LIN BSL, CCU6 PWM, and automotive SAF qualification in a single 38-pin TSSOP package - making it optimal for cost-sensitive, update-capable body electronics nodes without CAN requirements.

Availability

XC866L4FRABEKXUMA1 is available at Aetrix Electronics and suitable for automotive body control modules, small motor drive controllers, and smart sensor interface nodes requiring stable component supply, long-term lifecycle assurance, and AEC-Q100-aligned manufacturing traceability.

Supply support for XC866L4FRABEKXUMA1 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 microcontrollers, with global R&D and wafer fabrication infrastructure.

The XC800 family-including XC866-is designed specifically for cost-optimized automotive body electronics and industrial motor control applications requiring integrated analog peripherals, LIN connectivity, and robust flash-based firmware execution.

FAQ

Does XC866L4FRABEKXUMA1 support CAN communication?

No. XC866L4FRABEKXUMA1 does not include a CAN controller or physical layer driver. It supports LIN 2.0 via its integrated UART and LIN BSL firmware, but CAN functionality requires external transceivers and software stacks or migration to Infineon's XC886 or AUDO families.

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

The ADC supports up to 100 ksamples/s under typical conditions (VDDP = 5.0 V, TA = 25 °C), corresponding to a minimum conversion time of 10 µs per channel. Channel scanning and result readout add overhead, limiting sustained multi-channel throughput to ~60 ksamples/s in continuous mode.

Is the CCU6 module capable of generating center-aligned PWM?

Yes. The CCU6 supports both edge-aligned and center-aligned PWM modes via its CAPREL and T12 registers. Center-aligned operation reduces harmonic content in motor drive applications and is configured using the CCM2 register's CCM2.CEN bit and associated shadow transfer settings.

How is the LIN BSL activated and secured against unauthorized access?

The LIN BSL is activated by asserting the EXINT0 pin during reset and entering a specific key sequence via UART. Security relies on a 16-bit password stored in protected Flash and hardware-enforced write protection of the PASSWD register - preventing overwrite without erasing the entire sector.