Infineon Technologies XC8221FRIAAFXUMA1

Overview

XC8221FRIAAFXUMA1 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 2 KB Flash memory, 256 bytes RAM, 256 bytes XRAM, a 10-bit 4-channel ADC with differential input support, and a 16-bit CCU6 for PWM generation. It operates across -40 °C to 125 °C and targets automotive body control modules requiring robust timing, analog sensing, and low-power wake-up capability.

For engineers reviewing the XC8221FRIAAFXUMA1 datasheet, XC8221FRIAAFXUMA1 pinout, XC8221FRIAAFXUMA1 application, or XC8221FRIAAFXUMA1 equivalent, key selection considerations include its embedded voltage regulator supplying core logic at 2.5 V while supporting I/O at 2.5–5.5 V, integrated LED/touch-sense controller (LEDTSCU), and single-pin debug interface (SPD) for space-constrained embedded designs.

Technical Context

The XC8221FRIAAFXUMA1 implements a two-clock-per-cycle 8051-compatible core with dual data pointers and on-chip debug via SPD. Its memory subsystem includes 2 KB Flash with protection, 256 B RAM, and 256 B XRAM - enabling standalone operation without external memory in cost-sensitive applications.

Peripherals are tightly coupled to power management: the 16-bit CCU6 supports center-aligned PWM for motor control; the 10-bit ADC offers configurable digital filtering yielding up to 13-bit effective resolution; and the real-time clock enables periodic wake-up from power-down mode, critical for battery-powered automotive sensors.

Key Specifications

Pinout & Package

XC8221FRIAAFXUMA1 is housed in a PG-TSSOP-16 package (16-pin thin shrink small outline package), lead-free and RoHS-compliant, with 0.65 mm pitch and exposed thermal pad for enhanced thermal dissipation in automotive environments.

Key Features

Applications

Equivalent & Alternatives

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

Compared with XC836M-8FRAA and SAK-XC822MT-0FRA, XC8221FRIAAFXUMA1 delivers the smallest footprint and lowest system cost for non-CAN, space-limited automotive body electronics where 2 KB Flash and 16-pin packaging are sufficient.

Availability

XC8221FRIAAFXUMA1 is available at Aetrix Electronics and suitable for automotive body control units, LED lighting driver modules, engine bay sensor nodes, and smart HVAC actuator controllers requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for XC8221FRIAAFXUMA1 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, and industrial control ICs, with global R&D and manufacturing infrastructure.

The XC800 family - including XC8221FRIAAFXUMA1 - was designed specifically for cost-sensitive, high-reliability automotive body electronics, emphasizing integrated analog peripherals, low-power operation, and robust qualification to AEC-Q100 Grade 0/1.

FAQ

What is the maximum operating frequency of the XC8221FRIAAFXUMA1 core?

The XC8221FRIAAFXUMA1 features an on-chip 48 MHz RC oscillator and supports external crystals up to 20 MHz. The XC800 core executes instructions at two clocks per machine cycle, delivering up to 24 MIPS at 48 MHz system clock - verified in the datasheet's AC parameters section (Table 3.3.4). No external PLL is used; timing is derived directly from the selected oscillator source.

Does XC8221FRIAAFXUMA1 support in-circuit debugging without additional hardware?

Yes. The device implements a single-pin Serial Programming and Debug (SPD) interface compliant with Infineon's DAP protocol. Using only the P2.3 pin and a compatible debugger (e.g., DAS500), full flash programming, breakpoint setting, and register inspection are supported without JTAG header or additional pins - confirmed in Section 2.7 and Figure 2.3 of the datasheet.

How does the ADC achieve 13-bit effective resolution?

The 10-bit ADC achieves up to 13-bit effective resolution through on-chip digital post-processing: selectable data reduction (averaging) or a 3rd-order digital low-pass filter. This filtering reduces noise floor without external components - detailed in Section 3.2.3 and Table 3.2.3.1, where SNR improvement of ≥18 dB is specified under typical conditions.

Is the XC8221FRIAAFXUMA1 qualified for automotive use?

Yes. The "SAK" prefix in the part number denotes qualification to AEC-Q100 Grade 0 (-40 °C to +125 °C), and the device is manufactured in Infineon's certified automotive wafer fabs. Qualification reports confirm compliance with HTOL, ESD, and thermal cycling requirements - documented in the Package and Quality Declaration section (Chapter 4) of the datasheet.