Infineon Technologies MB90F809SPF-G-JNE1

Overview

MB90F809SPF-G-JNE1 from Fujitsu is a 16-bit F2MC-16LX microcontroller with integrated 48-segment × 4-common LCD controller, 256 KB Flash memory, 28 KB RAM, and on-chip PLL supporting 1×–4× clock multiplication (up to 25 MHz CPU clock). It features 68 I/O ports, 12-channel 8/10-bit ADC, dual UART, I²C, and multiple 16-bit timers - deployed in industrial HMI panels requiring real-time control and direct LCD drive.

For engineers reviewing the MB90F809SPF-G-JNE1 datasheet, MB90F809SPF-G-JNE1 pinout, MB90F809SPF-G-JNE1 application, or MB90F809SPF-G-JNE1 equivalent, key selection criteria include its QFP-100 package, subclock-enabled watch mode, 2.7–3.6 V operation, 40 ns minimum instruction cycle, and integrated LCD segment drivers eliminating external bias circuitry.

Technical Context

The MB90F809SPF-G-JNE1 implements the F2MC-16LX architecture with 24-bit internal addressing, 23 addressing modes, and a 32-bit accumulator enabling high-precision arithmetic. Its instruction set supports C-language compilation and multitasking via system stack pointer and RETI instruction.

It integrates a programmable priority interrupt controller with 32 sources, expanded intelligent I/O service (EI2OS) across 16 channels, and five low-power modes - including Watch mode (subclock + watch timers only) and Stop mode (oscillator and subclock halted) - optimized for battery-backed industrial displays.

Key Specifications

Pinout & Package

Package: QFP-100 (FPT-100P-M06), 0.65 mm lead pitch, CMOS process, 2.7–3.6 V operation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit microcontroller applications.

Compared with MB90F809SPF-G-JNE1, MB90F803S trades RAM and subclock for lower cost in non-battery applications, while MB90F804-201 retains subclock and Flash but reduces RAM - making it optimal for simpler HMI firmware with identical power and display requirements.

Availability

MB90F809SPF-G-JNE1 is available at Aetrix Electronics and suitable for industrial HMI panels, process control terminals, office automation devices, and building management interfaces requiring stable component supply, long-lifecycle support, and guaranteed Flash memory qualification.

Supply support for MB90F809SPF-G-JNE1 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 Microelectronics was a Japanese semiconductor manufacturer specializing in microcontrollers, FRAM, and display drivers before its semiconductor business was acquired by Cypress Semiconductor in 2009.

The MB90800 Series targets industrial and office automation systems requiring integrated LCD control, real-time responsiveness, and multi-mode power management - designed specifically for cost-sensitive, high-reliability embedded displays.

FAQ

What is the maximum operating frequency and corresponding supply voltage range?

The MB90F809SPF-G-JNE1 achieves a maximum CPU clock of 25 MHz using the on-chip PLL (×4 multiplication of a 6.25 MHz crystal) at Vcc = 3.3 V ±0.3 V. It operates across 2.7–3.6 V, with timing specifications guaranteed only within the 3.0–3.6 V range for 25 MHz operation per DS07-13733-6E Section 3.1.

Does this microcontroller support in-system programming (ISP) via standard interfaces?

Yes - MB90F809SPF-G-JNE1 supports Flash programming via its built-in UART channels using Fujitsu's standard serial download protocol. No external programmer is required; firmware updates can be performed in-system using UART0 or UART1 with appropriate host-side loader software and correct boot mode pin configuration (MD0/MD1/MD2).

How many LCD segments and commons does the integrated controller support, and are they electrically compatible with standard static or multiplexed panels?

The integrated LCD controller supports exactly 48 segments and 4 commons, configured for 48×4 multiplexed operation. All SEG and COM pins are CMOS outputs with rail-to-rail swing and specified sink/source drive strength - compatible with standard 1/4-duty, 1/3-bias multiplexed LCD panels without external resistors or charge pumps.

What are the hardware reset conditions and how is the RST pin used in production systems?

The RST pin is an active-low asynchronous input that forces hardware reset when held low for ≥100 ns. In production, it must be externally pulled up with a 10 kΩ resistor and debounced; Fujitsu recommends coupling it with a dedicated supervisor IC (e.g., CAT811) to ensure clean power-on and brown-out reset behavior - especially critical for Flash write integrity and LCD initialization stability.