Infineon Technologies MB90F352SPFM-GSE1

Overview

MB90F352SPFM-GSE1 from Fujitsu Semiconductor is a 16-bit F2MC-16LX microcontroller with integrated FULL-CAN 2.0A/B interface, 128 KB on-chip Flash ROM, 4 KB RAM, and operation up to 24 MHz (at +125°C). It features dual-bank Flash for concurrent read/erase/write, 15-channel 8/10-bit ADC (3 µs conversion), and two 16-bit freerun timers - deployed in automotive body control modules requiring robust CAN communication and real-time sensor processing.

For engineers reviewing the MB90F352SPFM-GSE1 datasheet, MB90F352SPFM-GSE1 pinout, MB90F352SPFM-GSE1 application, or MB90F352SPFM-GSE1 equivalent, key selection criteria include CAN message buffer flexibility (16 prioritized mailboxes), sub-clock independence (internal 100 kHz CR oscillator), Flash security protection, PLL-based 42 ns instruction execution, and LQFP-64 package compatibility with industrial-grade thermal range (−40°C to +125°C).

Technical Context

The MB90F352SPFM-GSE1 implements the F2MC-16LX CPU core with 24-bit internal addressing and full C-language support, including 32-bit accumulator arithmetic and enhanced multiply/divide instructions. Its clock system integrates a programmable PLL (×1 to ×6), clock monitor for main/sub clocks, and low-power modes (Sleep, Watch, Stop) controlled via dedicated registers.

Peripheral integration includes a 1-channel FULL-CAN controller compliant with ISO 11898-1:2003, supporting up to 1 Mbps, automatic retransmission, and flexible acceptance filtering (full-bit compare/mask). The 2-channel UART supports LIN master/slave operation, while the 15-channel ADC allows external-triggered sampling with selectable 8-/10-bit resolution and 3 µs minimum conversion time at 24 MHz machine clock.

Key Specifications

Pinout & Package

LQFP-64 package (FPT-64P-M24, 10 mm × 10 mm, 0.50 mm pitch) with exposed thermal pad; pinout validated per DS07-13737-4E Rev.4.0 (2007), pages 22–28.

Key Features

Applications

Equivalent & Alternatives

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

Compared with RL78/F13 and S12XEP100, MB90F352SPFM-GSE1 uniquely combines dual-bank Flash, internal 100 kHz CR oscillator, and FULL-CAN mailbox/FIFO hybrid buffering - enabling smaller, lower-cost, and more secure automotive nodes without sacrificing real-time responsiveness or update safety.

Availability

MB90F352SPFM-GSE1 is available at Aetrix Electronics and suitable for automotive body control modules, electronic power steering units, and industrial CAN gateways requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MB90F352SPFM-GSE1 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 (now part of Socionext Inc. since 2017) was a Japanese semiconductor manufacturer specializing in automotive, industrial, and communications MCUs with emphasis on reliability and functional safety.

This device belongs to the MB90350 Series - a family of 16-bit F2MC-16LX microcontrollers designed specifically for automotive body electronics and industrial control where CAN 2.0 compliance, Flash security, and extended temperature operation are mandatory.

FAQ

Does MB90F352SPFM-GSE1 support CAN FD?

No. The device implements FULL-CAN compliant with ISO 11898-1:2003 (CAN 2.0A/B), supporting up to 1 Mbps classical CAN frames only. It does not include CAN FD arbitration or data-phase enhancements, nor does its message buffer architecture support FD frame formatting or extended data length.

What is the purpose of the 'S' suffix in MB90F352SPFM-GSE1?

The 'S' suffix indicates the device omits external sub-clock pins (X0A/X1A) and instead uses the internal 100 kHz CR oscillator for watch mode and low-power timing. This eliminates the need for an external 32.768 kHz crystal, reducing BOM count and board area in cost-sensitive automotive modules.

Is the Flash security feature enabled by default?

No. Flash security must be explicitly programmed via the Flash command interface after initial device programming. Once enabled, it prevents read-out of Flash contents and disables debug access - irreversible without chip erase. Security lock status is verified using the Flash security flag register (FSR).

Can MB90F352SPFM-GSE1 operate at 24 MHz across the full −40°C to +125°C range?

Yes. As confirmed in DS07-13737-4E Product Lineup Table (Page 4), devices with 'A'-suffix (e.g., MB90F352A) support 24 MHz maximum frequency at +125°C. MB90F352SPFM-GSE1 carries both 'S' and 'A' suffixes, qualifying it for full-speed operation across the entire industrial-automotive temperature range.