Infineon Technologies MB90F546GSPF-G

Overview

MB90F546GSPF-G from Cypress Semiconductor is a 16-bit F2MC-16LX microcontroller with dual FULL-CAN interfaces (CAN 2.0A/B), 256 KB Flash ROM, 8 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 real-time CAN communication and deterministic I/O timing.

For engineers reviewing the MB90F546GSPF-G datasheet, MB90F546GSPF-G pinout, MB90F546GSPF-G application, or MB90F546GSPF-G equivalent, key selection criteria include dual-CAN channel support, Flash memory programmability with block protection, 8/10-bit 8-channel ADC with 26.3 µs conversion, and 81 general-purpose I/O ports with flexible peripheral mapping.

Technical Context

The MB90F546GSPF-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 interrupt sources including CAN message reception, timer overflows, and external edge-triggered inputs.

It integrates two independent FULL-CAN controllers compliant with ISO 11898-1:2003 (CAN 2.0B), each supporting up to 1 Mbps data rate, automatic retransmission, remote frame handling, and configurable mailbox/FIFO buffering. The external bus interface enables 16 Mbyte address space expansion using 8-/16-bit data bus modes.

Key Specifications

Pinout & Package

MB90F546GSPF-G is housed in a 100-pin QFP (PQH100) package with 0.65 mm pitch, lead-free finish, and thermal pad exposed on underside for enhanced heat dissipation in automotive under-hood environments.

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 MC9S12XEQ512, the MB90F546GSPF-G uniquely balances dual-CAN capability, Flash security features, and compact QFP-100 packaging for cost-sensitive body electronics-without requiring CAN FD migration or legacy toolchain dependencies.

Availability

MB90F546GSPF-G is available at Aetrix Electronics and suitable for automotive body control modules, industrial CAN gateways, powertrain sensor interfaces, and heavy-duty vehicle telematics requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MB90F546GSPF-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 mixed-signal ICs for automotive, industrial, and IoT applications, emphasizing functional safety, longevity, and ecosystem support.

The MB90540G/545G series was developed specifically for automotive body electronics and industrial control systems demanding dual-CAN connectivity, Flash-based field-upgradability, and robust operation from −40 °C to +105 °C.

FAQ

What is the maximum CAN bit rate supported by MB90F546GSPF-G?

The MB90F546GSPF-G supports up to 1 Mbps per CAN channel, compliant with ISO 11898-1:2003 (CAN 2.0B). Bit timing is programmable via BTR registers, and automatic retransmission occurs on error frames. This rate is achievable with proper bus termination and transceiver selection, and has been validated in automotive network testing per OEM EMC requirements.

Does MB90F546GSPF-G support in-system programming of Flash memory?

Yes, MB90F546GSPF-G supports full in-system programming via its embedded Flash algorithm, including Write, Erase, Erase-Suspend, and Erase-Resume commands. Programming is initiated through dedicated command registers, and completion is signaled by a hardware flag. No external high-voltage programmer is needed-only standard VCC and serial interface access.

How many independent clock domains does MB90F546GSPF-G provide?

The device provides two independent clock domains: main system clock (PLL-derived, up to 16 MHz) and 32 kHz sub-clock domain. The sub-clock drives low-power timers and RTC functions during Sleep/Stop modes, while the main clock powers CPU, CAN, and high-speed peripherals. Clock switching is controlled via dedicated register bits without reset.

Can MB90F546GSPF-G operate without an external crystal?

No-MB90F546GSPF-G requires an external crystal or clock source connected to X0A/X1A pins to initialize the PLL. Internal RC oscillators are not provided. The datasheet specifies 4 MHz as the typical crystal frequency for achieving 16 MHz system clock via ×4 PLL multiplication, and operation outside 1–10 MHz range is not guaranteed.