Infineon Technologies MB90F543GSPF-G

Overview

MB90F543GSPF-G from Cypress Semiconductor is a 16-bit F2MC-16LX microcontroller with dual FULL-CAN interfaces (CAN 2.0A/B), 128 KB Flash ROM, 6 KB RAM, and QFP-100 package. It operates at up to 16 MHz system clock (via on-chip PLL ×4), delivers 62.5 ns minimum instruction execution time, and targets automotive body control modules requiring CAN-based distributed sensing and actuation.

For engineers reviewing the MB90F543GSPF-G datasheet, MB90F543GSPF-G pinout, MB90F543GSPF-G application, or MB90F543GSPF-G equivalent, key selection criteria include dual-CAN timing compliance, Flash reprogrammability in-system, 8/10-bit A/D conversion with 26.3 µs per channel, and support for external bus expansion up to 16 Mbytes.

Technical Context

The MB90F543GSPF-G implements the proprietary F2MC-16LX CPU core with 23 addressing modes, 32-bit accumulator for extended precision arithmetic, and enhanced C-language support via system stack pointer and barrel shift instructions. Its interrupt subsystem supports 8 priority levels and 34 sources including delayed-interrupt generation for task switching.

Dual FULL-CAN controllers provide flexible mailbox/FIFO message buffering, automatic retransmission, remote frame response, and acceptance filtering with full-bit compare/mask options. The peripheral set includes four 8/16-bit PPG timers, eight input capture channels, four output compare channels, two 16-bit reload timers, and UART0/UART1 with synchronous/asynchronous operation up to 2 Mbps.

Key Specifications

Pinout & Package

MB90F543GSPF-G is housed in a 100-pin Plastic Quad Flat Package (QFP-100, type PQH100), measuring 14 mm × 20 mm with 0.65 mm lead pitch. Pin functions are validated per Cypress document 002-07696 Rev. *B, pages 7–8.

Key Features

Applications

Equivalent & Alternatives

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

Compared with RH850/F1L and TC1766, MB90F543GSPF-G offers unique dual-CAN 2.0 support in QFP-100 with external bus expansion-critical for cost-sensitive body control units where CAN FD migration is not yet required and legacy memory-mapped peripherals must be retained.

Availability

MB90F543GSPF-G is available at Aetrix Electronics and suitable for automotive body electronics, industrial CAN gateways, engine subsystem monitoring, and telematics modules requiring stable component supply across extended temperature (−40 °C to +105 °C) and long product lifecycles.

Supply support for MB90F543GSPF-G 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

Cypress Semiconductor (now part of Infineon Technologies) designs high-reliability microcontrollers and programmable systems-on-chip for automotive, industrial, and IoT applications.

The MB90540G/545G series was developed specifically for automotive body electronics and industrial control nodes requiring dual-CAN 2.0 communication, Flash-based field-upgradability, and deterministic real-time peripheral response.

FAQ

What is the maximum supported CAN bit rate for MB90F543GSPF-G?

The MB90F543GSPF-G supports CAN communication up to 1 Mbps per channel, fully compliant with ISO 11898-1:2003 (CAN 2.0A/B). This maximum rate is achievable with proper bus termination, transceiver selection (e.g., TJA1050), and oscillator stability within ±0.5% tolerance at 16 MHz system clock.

Does MB90F543GSPF-G support in-system programming of its Flash memory?

Yes, MB90F543GSPF-G supports full in-system programming via its embedded Flash algorithm commands: Write, Erase, Erase-Suspend, and Erase-Resume. Programming requires only VCC (4.5–5.5 V), no external high-voltage supply, and completion is signaled by a dedicated status flag in the Flash control register.

How many general-purpose I/O pins does MB90F543GSPF-G provide?

MB90F543GSPF-G provides 81 general-purpose I/O ports, all individually configurable as input, output, or peripheral function (e.g., UART, CAN, timer). Each port supports push-pull drive, Schmitt-trigger input, and bit-wise direction control-enabling flexible signal routing without external glue logic.

Is an external crystal required for MB90F543GSPF-G operation?

Yes, MB90F543GSPF-G requires an external 4 MHz crystal connected to X0A/X1A for primary clock generation. The on-chip PLL multiplies this to 16 MHz system clock. A 32 kHz sub-clock crystal may also be used for low-power RTC functions, but is optional for basic operation.