Infineon Technologies SAF-XC866L-2FRA BE

Overview

SAF-XC866L-2FRA BE from Infineon Technologies is an 8-bit single-chip microcontroller based on the XC800 core (8051-compatible), featuring 4 KB program Flash, 4 KB data Flash, and operating at 5.0 V supply. It integrates a 10-bit 8-channel ADC, three 16-bit timers (T0/T1/T2), CCU6 capture/compare unit for PWM generation, UART, SSC, and on-chip debug support. Used in automotive body control modules requiring LIN communication capability.

For engineers reviewing the SAF-XC866L-2FRA BE datasheet, SAF-XC866L-2FRA BE pinout, SAF-XC866L-2FRA BE application, or SAF-XC866L-2FRA BE equivalent, key selection criteria include LIN Bootloader support, 5 V I/O tolerance, -40 °C to +85 °C industrial temperature grade, TSSOP-38 package compatibility, and integrated CCU6 for motor timing control.

Technical Context

The SAF-XC866L-2FRA BE implements the XC800 core with two-clock-per-machine-cycle execution and dual data pointers, enabling zero-wait-state memory access. Its embedded voltage regulator supplies 2.5 V to the core while supporting 5.0 V I/O operation.

It includes LIN Bus System Loader (LIN BSL) firmware pre-programmed in Boot ROM, enabling in-system programming via LIN physical layer. The CCU6 module provides six PWM outputs with dead-time insertion and emergency shutdown, directly supporting BLDC motor commutation control.

Key Specifications

Pinout & Package

SAF-XC866L-2FRA BE is housed in a PG-TSSOP-38 (38-pin thin shrink small outline package) with 0.65 mm pitch, exposed thermal pad, and lead-free finish. Pin assignment validated per Infineon XC866 datasheet Figure 2 (Page 12, V1.2).

Key Features

Applications

Equivalent & Alternatives

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

Compared with SAF-XC866L-2FRA BE, SAF-XC886L-4FRA offers scalable memory and timing resources for complex motor algorithms, while TLF35584ESV33 serves a distinct system-level power/communication role and must be paired with a controller.

Availability

SAF-XC866L-2FRA BE is available at Aetrix Electronics and suitable for automotive body electronics, industrial motor control, and smart power distribution systems requiring stable component supply, long-term lifecycle assurance, and AEC-Q100-compliant sourcing.

Supply support for SAF-XC866L-2FRA BE 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, headquartered in Munich.

The XC800 family targets cost-sensitive, real-time embedded applications in automotive and industrial domains, emphasizing integration of LIN, PWM, and analog peripherals in compact 8-bit platforms.

FAQ

Does SAF-XC866L-2FRA BE support in-circuit debugging via JTAG?

No. SAF-XC866L-2FRA BE uses UART-based on-chip debug support via its integrated 1 KB monitor ROM and 64 B monitor RAM. It does not include a JTAG interface. Debugging requires connecting to the UART pins (P0.0/P0.1) and using Infineon's DAS (Debug Access Server) software stack.

What is the maximum operating frequency of the XC800 core in SAF-XC866L-2FRA BE?

The XC800 core operates at up to 26.7 MHz when driven by an external crystal or oscillator. At this frequency, the two-clock-per-machine-cycle architecture achieves 13.35 million instructions per second (MIPS), with all memory accesses completing in a single cycle without wait states.

Is the 4 KB Data Flash (D-Flash) wear-endurance rated?

Yes. The D-Flash is specified for 100,000 write/erase cycles per sector and retains data for 10 years at 85 °C. Each sector can be erased independently, and write operations are supported down to VDD = 4.5 V, ensuring reliability in brownout conditions common in automotive battery systems.

Can SAF-XC866L-2FRA BE operate with a 3.3 V supply?

No. SAF-XC866L-2FRA BE is a 5.0 V variant (denoted by "F" in the part number). It requires VDD = 5.0 V ±10% and is not rated for 3.3 V operation. For 3.3 V supply, the SAF-XC866L-2FRA 3V variant (orderable as SAF-XC866L-2FRA 3V) must be selected - it shares identical functionality but uses different internal voltage regulation.