Infineon Technologies XC866L4FRA3VBEKXUMA1

Overview

XC866L4FRA3VBEKXUMA1 from Infineon Technologies is an 8-bit single-chip microcontroller based on the XC800 core (8051-compatible), featuring 4 KB flash program memory, 512 bytes XRAM, 256 bytes RAM, and a 10-bit 8-channel ADC. It operates at 3.3 V I/O supply with internal 2.5 V core regulation and supports LIN Bootloader (LIN BSL). It targets automotive body control modules requiring integrated analog sensing and deterministic timing.

For engineers reviewing the XC866L4FRA3VBEKXUMA1 datasheet, XC866L4FRA3VBEKXUMA1 pinout, XC866L4FRA3VBEKXUMA1 application, or XC866L4FRA3VBEKXUMA1 equivalent, key selection criteria include LIN BSL support, 3.3 V operation with internal voltage regulation, 16-bit CCU6 PWM generation, watchdog timer configurability, and PG-TSSOP-38 package compatibility for space-constrained automotive PCB layouts.

Technical Context

The XC866L4FRA3VBEKXUMA1 implements a two-clock-per-machine-cycle 8051-compatible core with dual data pointers and on-chip debug support via 1 KB monitor ROM. Its clock system integrates an on-chip oscillator and PLL with loss-of-lock detection, enabling stable 26.67 MHz operation from a 1–20 MHz crystal.

It features three independent 16-bit timers (T0/T1/T2), a dedicated 16-bit capture/compare unit (CCU6) for motor control PWM, and a full-duplex UART plus synchronous serial channel (SSC) - all with configurable clock gating for power management in low-duty-cycle automotive nodes.

Key Specifications

Pinout & Package

XC866L4FRA3VBEKXUMA1 is housed in a 38-pin PG-TSSOP package (plastic thin shrink small outline package) with exposed thermal pad, optimized for thermal dissipation in automotive ambient conditions and compatible with standard reflow profiles.

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, XC866L4FRA3VBEKXUMA1 adds LIN BSL without increasing footprint or power; versus SAK-XC866-4FRA, it trades flash capacity for lower cost while retaining all critical peripherals for entry-level LIN nodes.

Availability

XC866L4FRA3VBEKXUMA1 is available at Aetrix Electronics and suitable for automotive body electronics, LIN network slave nodes, and industrial motor control applications requiring stable component supply, extended temperature operation, and long-term lifecycle assurance.

Supply support for XC866L4FRA3VBEKXUMA1 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 security solutions, with global R&D and manufacturing infrastructure.

The XC866 belongs to the XC800 family - designed specifically for cost-sensitive, functionally safe automotive body electronics where integration of LIN, PWM, and analog sensing reduces system-level BOM and board area.

FAQ

Does XC866L4FRA3VBEKXUMA1 support CAN communication?

No. The XC866L4FRA3VBEKXUMA1 does not integrate a CAN controller or transceiver. It supports LIN 2.1 via dedicated P3.x pins and UART/SSC for other serial protocols. CAN functionality requires external CAN controller or migration to Infineon's XC2000 or AUDO families.

What is the default state of the Flash memory after factory programming?

The 4 KB P-Flash is delivered pre-programmed with the LIN Bootloader (LIN BSL) and locked against unauthorized read/write access. The D-Flash sector is erased and ready for user data storage. No additional initialization is required to activate LIN BSL functionality.

Can the internal voltage regulator power external circuitry?

No. The internal 2.5 V regulator supplies only the XC866L4FRA3VBEKXUMA1 core logic. It is not rated for external load driving. External components requiring 2.5 V must use a dedicated regulator or LDO with appropriate current capability and transient response.

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

Yes. The CCU6 module supports center-aligned PWM with configurable dead-time insertion (1–64 clock cycles) on complementary output pairs (e.g., CC60/CC61), enabling direct drive of half-bridge or H-bridge motor drivers without external logic.