Infineon Technologies XC8664FRA5VBELXUMA1

Overview

XC8664FRA5VBELXUMA1 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 8 KB Flash, 256 bytes RAM, 512 bytes XRAM, 8-channel 10-bit ADC, three 16-bit timers (T0/T1/T2), CCU6 PWM unit, UART, SSC, and on-chip debug support. It operates across –40 °C to +150 °C and targets automotive body control modules.

For engineers reviewing the XC8664FRA5VBELXUMA1 datasheet, XC8664FRA5VBELXUMA1 pinout, XC8664FRA5VBELXUMA1 application, or XC8664FRA5VBELXUMA1 equivalent, key selection considerations include its extended temperature rating, integrated voltage regulator supplying core logic at 2.5 V while supporting 3.3 V/5.0 V I/O, LIN-capable UART, and PG-TSSOP-38 package for compact automotive PCB layouts.

Technical Context

The XC8664FRA5VBELXUMA1 implements a two-clock-per-cycle 8051-compatible core with dual data pointers and memory protection via configurable flash sector locking. Its clock system combines an on-chip oscillator with PLL for stable high-frequency operation and includes loss-of-lock detection for fail-safe timing monitoring.

It supports multiple power-saving modes-slow-down, idle, and power-down-with wake-up capability via RXD or EXINT0. Peripheral clock gating enables selective module shutdown, and the embedded voltage regulator delivers regulated 2.5 V to the core while allowing independent 3.3 V or 5.0 V supply to I/O ports.

Key Specifications

Pinout & Package

XC8664FRA5VBELXUMA1 is housed in a PG-TSSOP-38 (Plastic Thin Shrink Small Outline Package) with 38 leads, 0.65 mm pitch, and exposed thermal pad for enhanced heat dissipation in high-temperature automotive deployments.

Key Features

Applications

Equivalent & Alternatives

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

Compared with XC8664FRA5VBELXUMA1, XC886L4RABKXUMA1 offers memory scalability within identical pinout and qualification, while SAK-TC1766 demands complete redesign but enables next-generation functional safety and connectivity features.

Availability

XC8664FRA5VBELXUMA1 is available at Aetrix Electronics and suitable for automotive body control modules, seat position controllers, roof modules, and climate control actuators requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for XC8664FRA5VBELXUMA1 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.

This device belongs to the XC800 family - a series of 8-bit microcontrollers designed specifically for cost-sensitive, high-reliability automotive body electronics applications requiring extended temperature operation and functional safety readiness.

FAQ

Does XC8664FRA5VBELXUMA1 support LIN 2.1 physical layer directly?

Yes - the integrated UART includes hardware support for LIN 2.1 header transmission, including automatic sync field generation and break detection. No external transceiver is required for basic LIN node functionality, though a LIN physical layer transceiver (e.g., TLE7259) must still be used for bus-level signal conditioning and fault protection.

What is the maximum ADC sampling rate achievable with this MCU?

The ADC achieves up to 100 kSPS maximum conversion rate under optimal conditions: 10-bit resolution, internal ADC clock derived from system clock divided by 4, and no wait states. Actual throughput depends on channel count, conversion sequence configuration, and CPU load during result readout.

Can the embedded voltage regulator supply external circuitry?

No - the internal 2.5 V regulator is dedicated solely to powering the core logic and internal peripherals. It is not rated for external load driving and lacks output pins or current capability beyond internal consumption (~20 mA typical). External regulators must be used for auxiliary 2.5 V rails.

Is JTAG debugging supported on this part?

Yes - the device implements IEEE 1149.1-compliant JTAG interface with full boundary-scan and on-chip debug capabilities. The JTAG ID register is accessible, and debug access is enabled via the monitor ROM, supporting breakpoints, register inspection, and flash programming through standard tools like DAS and iSYSTEM winIDEA.