Infineon Technologies MB90F922NCSPMC-GE1

Overview

MB90F922NCSPMC-GE1 from Cypress Semiconductor (formerly Fujitsu) is a 16-bit F2MC-16LX microcontroller featuring 256 KB Flash, 16 KB RAM, and integrated CAN 2.0B controller. It operates at up to 40 MHz with PLL clock multiplication support (×1–×4), includes 12-bit ADC (16 channels), and targets automotive body control modules requiring ASIL-B-aware firmware execution. The device uses a 100-pin LQFP package with 80 I/Os.

For engineers reviewing the MB90F922NCSPMC-GE1 datasheet, MB90F922NCSPMC-GE1 pinout, MB90F922NCSPMC-GE1 application, or MB90F922NCSPMC-GE1 equivalent, key selection criteria include PLL stop mode limitations, CAN timing accuracy under main clock fallback, Flash endurance (100K write/erase cycles), and qualification for AEC-Q100 Grade 2 temperature operation (−40°C to +105°C).

Technical Context

This MCU implements the F2MC-16LX core with Harvard architecture, supporting dual-bank Flash for safe in-application programming. Its on-chip peripherals include a 32-bit timer array unit (TAU), watchdog timer with window function, and serial interface controllers (UART, CSI, I²C).

The chip errata (Document No. 002-04398 Rev. *A) confirms functional limitation in PLL stop mode recovery via external interrupt - requiring workaround use of main clock mode transitions or PLL multiplication rates limited to ×1–×4 to ensure deterministic clock stabilization before instruction execution.

Key Specifications

Pinout & Package

MB90F922NCSPMC-GE1 is housed in a 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch) package with exposed thermal pad. Pin functions are defined per the official MB90F922 hardware manual (Rev. 1.20, 2015).

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY9BF922NPMC-GE1, this part offers identical functionality under Fujitsu legacy branding; versus MB90F923NCSPMC-GE1, it trades memory headroom for cost-sensitive BCM implementations where single-CAN and 256 KB Flash are sufficient.

Availability

MB90F922NCSPMC-GE1 is available at Aetrix Electronics and suitable for automotive body control modules, door module controllers, roof modules, and seat control units requiring stable component supply and long-lifecycle support.

Supply support for MB90F922NCSPMC-GE1 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 (acquired Fujitsu Microelectronics in 2014) specializes in high-reliability embedded solutions for automotive, industrial, and consumer markets, with deep expertise in mixed-signal MCU design and automotive qualification.

The MB90F922 belongs to the F2MC-16LX family - engineered specifically for cost-optimized, ASIL-B-capable automotive body electronics where deterministic real-time response, CAN integration, and extended temperature operation are mandatory.

FAQ

Does MB90F922NCSPMC-GE1 support CAN FD?

No. This MCU integrates a legacy CAN 2.0B controller only, supporting bit rates up to 1 Mbps with standard and extended frame formats. CAN FD capability requires newer architectures such as Cypress Traveo™ or Infineon AURIX™ families. Firmware must implement protocol filtering and mailbox arbitration within the 32-object hardware buffer.

What is the recommended workaround for PLL stop mode limitation?

The documented workaround (Errata 002-04398 Rev. *A) requires avoiding PLL stop mode entirely. Use main clock stop mode instead, or transition through main clock mode before re-enabling PLL: PLL → main clock → main stop → main clock → PLL. PLL multiplication must be set to ×1–×4 to guarantee stable startup after wake-up.

Is MB90F922NCSPMC-GE1 qualified for automotive safety standards?

It is AEC-Q100 Grade 2 qualified (−40°C to +105°C), but not ISO 26262-certified. System-level ASIL-B compliance must be achieved via software diagnostics (e.g., CRC checks, watchdog supervision, memory test routines) implemented per the hardware's built-in features - not inherent safety certification of the silicon itself.

Can the on-chip ADC measure negative voltages?

No. The 12-bit ADC accepts only single-ended inputs referenced to AVSS (typically tied to VSS). Input range is 0 V to AVDD (3.3 V), with no built-in offset or bipolar conversion capability. External signal conditioning (e.g., level-shifting op-amp) is required for negative-going signals.