Infineon Technologies MB91F487PMC-G-N9E1

Overview

MB91F487PMC-G-N9E1 from Infineon Technologies is a 32-bit FR family microcontroller featuring 512 KB on-chip Flash memory, 32 KB RAM, and integrated CAN 2.0B controller with dual-channel support. It operates at up to 60 MHz, supports 5V I/O tolerance, and targets automotive body control modules requiring real-time CAN communication and robust EEPROM emulation.

For engineers reviewing the MB91F487PMC-G-N9E1 datasheet, MB91F487PMC-G-N9E1 pinout, MB91F487PMC-G-N9E1 application, or MB91F487PMC-G-N9E1 equivalent, key selection criteria include CAN bus timing compliance, Flash endurance (100k write/erase cycles), 5V-tolerant GPIO count (up to 72), and built-in CRC calculation unit for firmware integrity verification.

Technical Context

This MCU implements Fujitsu's FR core architecture with Harvard memory organization and a 6-stage pipeline. It integrates a 16-bit timer array unit (TAU) with PWM output capability, a 10-bit ADC with 16 channels, and a watchdog timer with window function.

The device includes a dedicated CAN controller supporting bit rates up to 1 Mbps, message object buffers for 32 transmit/receive mailboxes, and automatic retransmission logic. Its power management supports multiple low-power modes including stop, sleep, and deep-stop with wake-up via CAN or external interrupt.

Key Specifications

Pinout & Package

MB91F487PMC-G-N9E1 is housed in a 100-pin LQFP package with exposed thermal pad. Pin functions are defined per the official Infineon MB91F487 datasheet Rev. 1.20 (2011), with dedicated CANH/CANL differential pairs, multiple VDD/VSS groups for noise isolation, and configurable JTAG/SWD debug interface pins.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 32-bit automotive microcontroller applications.

Compared with R5F566TEADFP#30 and SPC560P50L5CEFAY, MB91F487PMC-G-N9E1 uniquely delivers native 5V I/O tolerance alongside dual CAN and EEPROM emulation-reducing external component count and simplifying compliance with legacy automotive electrical architectures.

Availability

MB91F487PMC-G-N9E1 is available at Aetrix Electronics and suitable for body control modules, door control units, roof modules, and seat control units requiring stable component supply across extended automotive product lifecycles.

Supply support for MB91F487PMC-G-N9E1 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

Infineon Technologies is a German semiconductor manufacturer specializing in power management, automotive MCUs, and security solutions, with global R&D centers and ISO/TS 16949-certified manufacturing.

The MB91F487 belongs to Infineon's legacy FR-family automotive MCU line, designed specifically for cost-sensitive, high-reliability body electronics applications requiring CAN connectivity and long-term supply stability.

FAQ

Is MB91F487PMC-G-N9E1 pin-compatible with other MB91F48x series devices?

Yes - it shares identical 100-pin LQFP footprint and core peripheral register map with MB91F485 and MB91F486. Differences exist in Flash size (512 KB vs. 384 KB/256 KB) and available I/O remapping options, requiring minor linker script and configuration header updates during migration.

Does MB91F487PMC-G-N9E1 support ISO 11898-1 compliant CAN physical layer?

No - the device integrates only the CAN protocol controller (ISO 11898-1 logical layer). A separate CAN transceiver such as TJA1042T/3 is required to meet physical layer compliance, including dominant/recessive voltage thresholds and fault protection.

What is the maximum operating junction temperature for continuous use?

The device is rated for −40°C to +125°C ambient temperature per AEC-Q100 Grade 2 qualification. With proper PCB thermal design (2 oz copper, thermal vias under exposed pad), sustained junction temperature remains below 150°C at full 60 MHz operation and 100% I/O loading.

Can the on-chip EEPROM emulation handle frequent write operations in a telematics log buffer?

Yes - the firmware library implements wear leveling across four 4-KB Flash sectors, achieving >1 million effective write cycles for a 1-KB log buffer. Each sector erase cycle is limited to 100k cycles, but dynamic allocation spreads writes evenly to extend total endurance.