Infineon Technologies MB90F568PFM-GE1

Overview

MB90F568PFM-GE1 from Fujitsu Semiconductor is an 8-bit F2MC-8L family microcontroller with 48 KB mask ROM, 256 B RAM, 10-bit A/D converter (8-channel), UART, and 280-element I/O structure. It operates at 1–10 MHz across +2.2 V to +6.0 V supply, supports software-switchable clock gear for low-power operation, and targets embedded control in consumer audio-visual equipment and microwave ovens.

For engineers reviewing the MB90F568PFM-GE1 datasheet, MB90F568PFM-GE1 pinout, MB90F568PFM-GE1 application, or MB90F568PFM-GE1 equivalent, key selection criteria include its 48 KB ROM capacity, 10-bit A/D resolution and channel count, UART interface support, stop-mode backup voltage requirement (+1.5 V min), and F2MC-8L instruction set compatibility with MB89xxx series.

Technical Context

The MB90F568PFM-GE1 implements Fujitsu's proprietary F2MC-8L 8-bit CPU core with 136 instructions, including 8×8-bit multiply (7.6 μs @10 MHz) and 16÷8-bit divide (8.4 μs @10 MHz). It features memory-mapped I/O, dedicated registers (PC, SP, IX, EP, PS), and up to 32 banks of 8-bit general-purpose registers.

It integrates a 280-element I/O structure supporting bit-selectable pull-up resistors, prioritized multi-level interrupts, and a clock gear function enabling four selectable instruction cycle speeds - critical for dynamic power management in battery-backed or low-voltage consumer appliances.

Key Specifications

Pinout & Package

MB90F568PFM-GE1 is housed in a 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch) package with exposed thermal pad. Pin functions align with F2MC-8L Family standard I/O mapping, including dual 8-bit timers, SIO, and dedicated A/D input pins.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MB89820 and MB89920, MB90F568PFM-GE1 offers optimal balance of ROM capacity (48 KB), integrated 280-element I/O, and low-voltage operation - making it ideal for mid-complexity consumer appliances where cost, footprint, and feature alignment are tightly coupled.

Availability

MB90F568PFM-GE1 is available at Aetrix Electronics and suitable for audio-visual equipment control, microwave oven main controllers, and cordless telephone base stations requiring stable component supply and long-term industrial availability.

Supply support for MB90F568PFM-GE1 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 was a Japan-based designer of proprietary microcontrollers and analog/mixed-signal ICs, focused on embedded systems for consumer, industrial, and telecom markets before its semiconductor business was acquired by Spansion (now Cypress Semiconductor).

The F2MC-8L family - including MB90F568PFM-GE1 - was engineered for cost-sensitive, low-power 8-bit control in mass-market appliances, emphasizing ROM density, voltage flexibility, and interrupt responsiveness over raw performance.

FAQ

Is MB90F568PFM-GE1 pin-compatible with other F2MC-8L 100-pin devices?

Yes - MB90F568PFM-GE1 shares the same 100-pin LQFP footprint and I/O pin mapping as other F2MC-8L family members like MB89920 and MB89820. However, differences in internal peripheral enablement (e.g., MSK modem in MB89920) mean firmware and external circuitry must be verified per device.

Does MB90F568PFM-GE1 support in-circuit debugging?

No - MB90F568PFM-GE1 does not integrate on-chip debug hardware. Development requires external emulators such as the Fujitsu F2MC-8L ICE or evaluation boards with dedicated debug interfaces; programming is performed via parallel writer using the OTPROM-compatible pinout.

What is the maximum allowed clock frequency and corresponding supply voltage?

The maximum clock frequency is 10 MHz at +5.0 V to +6.0 V. At +2.2 V to +3.6 V, the maximum supported frequency is 4.2 MHz. These limits are defined by internal timing margins and must be observed to guarantee correct instruction execution and A/D conversion accuracy.

Can the 10-bit A/D converter operate during stop mode?

No - the A/D converter is disabled in stop mode to minimize current draw. Conversion can only occur in normal or wait modes. Wake-up from stop mode via external interrupt or reset is required before initiating A/D sampling, with typical wake-up latency of 2–4 μs.