Infineon Technologies XC8664FRIBEKXUMA1

Overview

XC8664FRIBEKXUMA1 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 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 125 °C in automotive-grade SAK temperature profile.

For engineers reviewing the XC8664FRIBEKXUMA1 datasheet, XC8664FRIBEKXUMA1 pinout, XC8664FRIBEKXUMA1 application, or XC8664FRIBEKXUMA1 equivalent, this device supports embedded motor control, LIN-compliant body electronics, and real-time sensor interfacing where deterministic timing, on-chip debug support, and dual-voltage I/O (3.3 V/5 V) are required.

Technical Context

The XC8664FRIBEKXUMA1 implements a two-clock-per-cycle 8051-compatible core with dual data pointers and integrated voltage regulation-core logic runs at 2.5 V while I/O ports support 3.3 V or 5.0 V operation. Its memory architecture separates P-Flash (4 KB) and D-Flash (4 KB), both configurable for code or data storage, and includes 8 KB of mask-programmed Boot ROM containing monitor firmware.

Peripheral integration includes a 16-bit CCU6 module supporting center-aligned PWM with dead-time insertion, hardware-based LIN bus support via UART with BSL, and power management with slow-down, idle, and wake-up-capable power-down modes triggered by RXD or EXINT0. The ADC provides 10-bit resolution across eight channels with programmable sampling time.

Key Specifications

Pinout & Package

XC8664FRIBEKXUMA1 is housed in a PG-TSSOP-38 package-a thermally enhanced, surface-mount thin shrink small-outline package with 38 leads, 0.65 mm pitch, and exposed thermal pad for improved heat dissipation in compact automotive modules.

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 SAK-XC866-4RRA, XC8664FRIBEKXUMA1 uniquely combines field-upgradable Flash, full Boot ROM debug support, and automotive-qualified temperature range-making it optimal for development-stage automotive ECUs requiring iterative firmware validation.

Availability

XC8664FRIBEKXUMA1 is available at Aetrix Electronics and suitable for automotive body electronics, industrial motor control, smart power distribution, and LIN-node sensor interfaces requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for XC8664FRIBEKXUMA1 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 MCUs, and security solutions, with global R&D and manufacturing infrastructure.

The XC866 belongs to the XC800 family-designed specifically for cost-sensitive, real-time automotive and industrial control applications requiring robust analog integration, LIN compliance, and extended temperature reliability.

FAQ

Does XC8664FRIBEKXUMA1 support in-system programming via LIN?

Yes. It includes a factory-programmed LIN bootloader (BSL) in its 8-Kbyte Boot ROM, enabling firmware updates over a single-wire LIN bus without requiring external programming hardware. The BSL supports LIN 2.1 protocol frames and verifies checksums before writing to Flash memory.

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

The ADC achieves up to 100 kSPS maximum conversion rate when configured for 10-bit resolution with minimum acquisition time. Conversion time is 13.5 µs per sample, including sampling and conversion phases, and is synchronized to the peripheral clock domain derived from the system PLL.

Can the CCU6 module generate complementary PWM signals with dead-time insertion?

Yes. The CCU6 contains two independent 16-bit capture/compare units (CC60–CC65), each supporting center-aligned PWM with programmable dead-time insertion down to 12.5 ns resolution. Dead time is enforced in hardware to prevent shoot-through in half-bridge drivers.

Is the 256-byte internal RAM battery-backed or retainable during power-down mode?

No. The 256-byte RAM is volatile and loses content during power-down mode. However, the 4-Kbyte D-Flash can store critical variables with retention exceeding 100,000 write cycles and 20-year data retention at 125 °C, serving as nonvolatile backup memory.