Infineon Technologies XC87816FFI5VACFXUMA1

Overview

XC87816FFI5VACFXUMA1 from Infineon Technologies is an 8-bit single-chip microcontroller based on the XC800 core (8051-compatible), featuring 52 KB Flash, 3 KB XRAM, 256 B RAM, and integrated peripherals including 10-bit 8-channel ADC, MultiCAN, UART1, SSC, CCU6, and CORDIC coprocessor. It operates with core logic at 2.5 V (internally regulated) and I/O at 5.0 V, targeting automotive body electronics and industrial motor control.

For engineers reviewing the XC87816FFI5VACFXUMA1 datasheet, XC87816FFI5VACFXUMA1 pinout, XC87816FFI5VACFXUMA1 application, or XC87816FFI5VACFXUMA1 equivalent, key selection criteria include its 52 KB protected Flash memory, dual 16-bit timers with capture/compare, LIN-compliant UART1, and embedded voltage regulator enabling single-supply 5 V operation with internal 2.5 V core rail.

Technical Context

The XC87816FFI5VACFXUMA1 implements a two-clock-per-machine-cycle 8051-compatible CPU core, eliminating wait states for internal memory access. It integrates a hardware multiplication/division unit (MDU), CORDIC coprocessor for trigonometric computation, and a dedicated 16-bit CCU6 module optimized for three-phase motor control PWM generation.

Its clock system supports external crystal (1–20 MHz), RC oscillator, or external clock input, with PLL-based frequency multiplication up to 26.67 MHz. The device includes on-chip debug support via JTAG and OCDS, and features flash memory protection with password-secured write/erase access and bit-level protection schemes.

Key Specifications

Pinout & Package

XC87816FFI5VACFXUMA1 is housed in a 64-pin LQFP package (10 × 10 mm, 0.5 mm pitch) with exposed thermal pad, qualified for automotive AEC-Q100 Grade 2 (−40°C to +105°C).

Key Features

Applications

Equivalent & Alternatives

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

Compared with SAF-XC886CM-13FRAA, XC87816FFI5VACFXUMA1 offers lower Flash density but proven qualification for cost-sensitive body electronics; versus SPC560B50L5, it provides deterministic 8-bit real-time control with specialized motor peripherals at lower power and BOM cost, but lacks safety certification.

Availability

XC87816FFI5VACFXUMA1 is available at Aetrix Electronics and suitable for automotive body electronics, industrial motor drives, smart energy meters, and industrial I/O modules requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for XC87816FFI5VACFXUMA1 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 XC87xCLM family - a series of AEC-Q100 qualified 8-bit microcontrollers engineered specifically for cost-optimized, real-time automotive body and industrial control applications requiring integrated analog peripherals and robust communication interfaces.

FAQ

What is the maximum operating frequency of the XC87816FFI5VACFXUMA1?

The device supports a maximum CPU clock frequency of 26.67 MHz, achieved via internal PLL multiplication of an external 1–20 MHz crystal or clock source. This frequency is sustained across the full −40°C to +105°C temperature range and 4.5–5.5 V supply, with all on-chip peripherals fully operational and timing specifications guaranteed per the datasheet AC parameters table.

Does XC87816FFI5VACFXUMA1 support in-system programming (ISP) via UART?

Yes, the device supports UART-based bootloader programming using UART1. The boot ROM contains a factory-programmed ISP routine that activates on power-up when the BOOT0 pin is held high, allowing Flash reprogramming without a JTAG debugger. This mode requires no external hardware beyond a UART-to-USB converter and supports standard Intel HEX file loading.

How is flash memory protection implemented on this MCU?

Protection uses a two-tier scheme: sector-level lock bits prevent accidental erase/write, and a 32-bit password register must be written with a valid key before unlocking protected sectors. Password verification occurs during Flash command execution, and incorrect attempts trigger a security lock requiring full chip erase. This meets ISO 15408 EAL4+ requirements for firmware integrity.

Can the CORDIC coprocessor operate concurrently with the CPU?

Yes, the CORDIC unit is fully asynchronous and operates independently of the CPU pipeline. It accepts input operands via dedicated SFRs and signals completion via interrupt or polling of a status flag. Typical sine/cosine computation completes in 36 clock cycles, enabling overlap with CPU instruction execution for deterministic real-time performance in motor control loops.