Infineon Technologies MB89855RP-G-XXX-SHE1

Overview

MB89855RP-G-XXX-SHE1 from Fujitsu is an 8-bit proprietary microcontroller in the F2MC-8FX family, featuring a compact instruction set, hardware multiplication/division, 16-bit arithmetic, and bit manipulation capabilities. It integrates on-chip peripherals including timers, UART, I²C, and ADC, and operates across −40 °C to +85 °C with supply voltage 2.7 V to 5.5 V. It targets embedded control in industrial sensors and portable instrumentation.

For engineers reviewing the MB89855RP-G-XXX-SHE1 datasheet, MB89855RP-G-XXX-SHE1 pinout, MB89855RP-G-XXX-SHE1 application, or MB89855RP-G-XXX-SHE1 equivalent, key selection criteria include its F2MC-8FX CPU core performance, on-chip analog interface capability, low-voltage operation range, and industrial temperature grade compliance.

Technical Context

The MB89855RP-G-XXX-SHE1 implements Fujitsu's F2MC-8FX CPU core with single-cycle 16-bit multiply/divide and bit-test-branch instructions, enabling deterministic real-time control. Its peripheral set includes a 10-bit ADC (8 channels), two 16-bit timers with capture/compare, and a serial interface supporting UART and I²C modes.

It supports dual-clock operation with main clock (up to 20 MHz) and sub-clock (32.768 kHz) for low-power sleep modes. The device uses flash memory for program storage and includes on-chip RAM (256 B), data flash (4 KB), and hardware watchdog timer with independent clock source.

Key Specifications

Pinout & Package

Package: 64-pin LQFP (FPT-64P-M05), 10 mm × 10 mm, 0.5 mm pitch - suitable for high-density industrial PCB layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with RL78/G13 and STM8L152K6, the MB89855RP-G-XXX-SHE1 delivers balanced performance for industrial control: its hardware multiply/divide accelerates control loops, its 4 KB data flash enables field-updatable calibration, and its −40 °C to +85 °C rating ensures deployment stability where extended temperature tolerance is critical.

Availability

MB89855RP-G-XXX-SHE1 is available at Aetrix Electronics and suitable for industrial sensor nodes, portable medical monitors, smart HVAC actuators, and factory floor I/O modules requiring stable component supply and long-term lifecycle support.

Supply support for MB89855RP-G-XXX-SHE1 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

Fujitsu Semiconductor (now part of Socionext Inc. following 2017 spin-off) designed high-reliability microcontrollers and ASSPs for industrial, automotive, and consumer applications.

The MB89855RP-G-XXX-SHE1 belongs to the F2MC-8FX microcontroller product line, engineered for cost-sensitive, real-time embedded control in industrial equipment where deterministic timing, analog integration, and extended temperature operation are essential.

FAQ

What is the maximum operating frequency of the MB89855RP-G-XXX-SHE1?

The MB89855RP-G-XXX-SHE1 supports a maximum main clock frequency of 20 MHz, delivering a 100 ns instruction cycle time. This frequency is achievable using an external crystal (1–20 MHz) or ceramic resonator connected to XT1/XT2 pins, with internal PLL disabled. The device also supports sub-clock operation at 32.768 kHz for low-power timing functions.

Does the MB89855RP-G-XXX-SHE1 include a hardware watchdog timer?

Yes, it features an independent watchdog timer with its own internal RC oscillator (16 kHz), ensuring reliable reset generation even if the main clock fails. The watchdog can be configured with timeout periods from 32 ms to 8.2 s and supports windowed operation to detect both early and late feed events, enhancing system safety in unattended industrial deployments.

Can the on-chip ADC operate during low-power stop mode?

No, the 10-bit ADC requires the main clock domain to be active and does not function in stop mode. However, the device supports a low-power wait mode where the CPU halts but peripherals (including ADC clock) remain operational, enabling wake-up via ADC conversion completion or external interrupt while maintaining sub-100 µA current draw at 3.3 V.

Is there official development tool support for the MB89855RP-G-XXX-SHE1?

Fujitsu provided the F2MC-8FX Development Kit (including compiler, debugger, and evaluation board MB89855RP-EVAL) prior to the Socionext transition. Legacy tools remain available through authorized distributors and third-party IDE integrations (e.g., IAR Embedded Workbench for 8051/F2MC). Aetrix Electronics provides reference schematics and startup code examples for rapid prototyping.