Infineon Technologies MB9BF122LPMC-G-JNE2

Overview

MB9BF122LPMC-G-JNE2 from Infineon Technologies (formerly Cypress) is a 32-bit Arm® Cortex®-M3 microcontroller with dual-bank 256 KB Flash, 32 KB SRAM (16 KB SRAM0 + 16 KB SRAM1), 72 MHz max CPU frequency, and integrated peripherals including 26-channel 12-bit ADC, dual DAC, eight UART/CSIO/I²C/LIN serial interfaces, and hardware CRC accelerator. It targets low-power embedded motor control and industrial sensing applications requiring real-time responsiveness and code security.

For engineers reviewing the MB9BF122LPMC-G-JNE2 datasheet, MB9BF122LPMC-G-JNE2 pinout, MB9BF122LPMC-G-JNE2 application, or MB9BF122LPMC-G-JNE2 equivalent, key selection considerations include dual-operation Flash architecture for seamless firmware updates, 5 V-tolerant GPIOs on selected pins, RTC with leap-year support, six low-power modes (including Deep Standby RTC), and SWJ-DP debug interface with unique 41-bit ID.

Technical Context

The device implements an Arm Cortex-M3 r2p1 core with NVIC supporting 48 peripheral interrupts and 16 priority levels, coupled with a 24-bit SysTick timer for OS task scheduling. Its memory subsystem features dual-bank Flash enabling concurrent read-while-erase/write operations and two independent SRAM banks (SRAM0 on I/D-code bus, SRAM1 on system bus) to reduce bus contention.

Peripheral integration includes a DMA controller with eight channels operating on a dedicated bus, quadrature position/revolution counters (QPRC) with 16-bit position/revolution registers and configurable AIN/BIN/ZIN edge detection, and multi-function timers supporting PWM, PPG, input capture, and A/D activation - all optimized for closed-loop motor control timing precision and interrupt latency.

Key Specifications

Pinout & Package

MB9BF122LPMC-G-JNE2 is housed in an 80-pin LQFP package (12 mm × 12 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions are fully relocatable via register configuration, supporting flexible PCB layout and peripheral remapping without hardware changes.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 32-bit Arm Cortex-M3 microcontroller applications.

Compared with STM32F103VCT6 and RA4M1, MB9BF122LPMC-G-JNE2 uniquely combines dual-bank Flash for robust firmware updates, hardware-accelerated CRC for secure communication, and dedicated QPRC for direct encoder interfacing - making it optimal for cost-sensitive, safety-aware motor and industrial control systems.

Availability

MB9BF122LPMC-G-JNE2 is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, automotive body electronics, and PLC I/O modules requiring stable component supply, long-term lifecycle support, and qualified automotive-grade reliability.

Supply support for MB9BF122LPMC-G-JNE2 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 and manufacturing infrastructure.

This part belongs to the FM3 family of 32-bit Arm Cortex-M3 microcontrollers, designed specifically for cost-optimized, low-power industrial and automotive embedded control applications requiring integrated analog peripherals and robust real-time capabilities.

FAQ

What is the maximum operating frequency and voltage range for MB9BF122LPMC-G-JNE2?

The device operates at up to 72 MHz CPU frequency with a supply voltage range of 2.7 V to 5.5 V. This wide VCC range supports direct connection to 3.3 V or 5 V system rails without level-shifting, and enables interoperability with legacy 5 V sensors and actuators while maintaining low-power efficiency at reduced voltages.

Does MB9BF122LPMC-G-JNE2 support hardware-based LIN communication?

Yes - it integrates full LIN 2.1 protocol support in its multi-function serial interface, including programmable break field (13–16 bits) and delimiter (1–4 bits), automatic checksum generation, and hardware error detection (parity, framing, overrun). No external LIN transceiver is required for basic node functionality.

How does the dual-bank Flash architecture improve firmware update reliability?

Dual-bank Flash allows erasing and reprogramming one bank (e.g., lower 16 KB work area) while executing code from the other (e.g., upper 240 KB main area). This enables atomic firmware updates with zero application interruption, critical for remote industrial devices where downtime must be avoided.

Is the MB9BF122LPMC-G-JNE2 pin-compatible with other CY9B120M series devices?

Yes - it shares the same 80-pin LQFP package and pin assignment as other CY9B120M-series MCUs (e.g., MB9BF121LPMC-G-JNE2), enabling drop-in replacement within the family. Peripheral register maps and memory layouts are consistent, allowing firmware reuse across variants with different Flash/SRAM configurations.