Infineon Technologies MB9BF124MPMC-G-JNE2

Overview

MB9BF124MPMC-G-JNE2 from Infineon Technologies (formerly Cypress) is a 32-bit Arm® Cortex®-M3 microcontroller with 256 KB dual-bank 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.

For engineers reviewing the MB9BF124MPMC-G-JNE2 datasheet, MB9BF124MPMC-G-JNE2 pinout, MB9BF124MPMC-G-JNE2 application, or MB9BF124MPMC-G-JNE2 equivalent, key selection criteria include dual-bank Flash for seamless firmware updates, 5 V-tolerant GPIOs on 80-pin LQFP package, RTC with leap-year support, six low-power modes (including Deep Standby RTC), and LIN 2.1 compliance for automotive body electronics.

Technical Context

This MCU implements an Arm Cortex-M3 r2p1 core with NVIC supporting 48 peripheral interrupts and 16 priority levels, plus a 24-bit SysTick timer for RTOS scheduling. Its memory subsystem features dual-operation Flash enabling concurrent read-erase-write across upper (240 KB) and lower (16 KB) banks, and two independent SRAM blocks optimized for instruction/data (SRAM0) and system bus (SRAM1) access.

The peripheral architecture integrates eight DMA channels with 32-bit addressing, 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, PWC, and A/D activation compare functions - all critical for closed-loop motor control and real-time sensor processing.

Key Specifications

Pinout & Package

MB9BF124MPMC-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 documented in Cypress/Infineon's "CY9B120M Series" datasheet (Rev. *K), including dedicated JTAG/SW-DP debug pins, dual crystal oscillator inputs (XIN/XOUT, XIN2/XOUT2), 32.768 kHz sub-clock inputs, and 5 V-tolerant GPIOs mapped to PORT0–PORT7.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F103VET6 and RA4M1, MB9BF124MPMC-G-JNE2 uniquely combines dual-bank Flash for live firmware updates, dual LIN 2.1 channels with hardware break generation, and QPRC for direct encoder interfacing - making it optimal for automotive body ECUs and industrial motion controllers requiring robust, low-power, field-upgradable operation.

Availability

MB9BF124MPMC-G-JNE2 is available at Aetrix Electronics and suitable for industrial motor control, automotive body electronics, smart sensor nodes, and energy monitoring systems requiring stable component supply, long-term lifecycle support, and qualified sourcing.

Supply support for MB9BF124MPMC-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 leader specializing in power management, automotive MCUs, and security solutions, with global manufacturing and R&D infrastructure.

This device belongs to the FM3 family of 32-bit Arm Cortex-M3 microcontrollers, designed specifically for cost-optimized, low-power embedded control in automotive, industrial, and consumer applications requiring high peripheral integration and robust real-time performance.

FAQ

What is the maximum operating frequency and supported clock sources for MB9BF124MPMC-G-JNE2?

The MCU operates up to 72 MHz using its Arm Cortex-M3 core. Clock sources include two external oscillators (4–48 MHz main clock, 32.768 kHz sub-clock), two built-in CR oscillators (4 MHz high-speed, 100 kHz low-speed), and a main PLL that accepts either the main clock or high-speed CR as input - enabling flexible frequency synthesis and low-power clock domain partitioning.

Does MB9BF124MPMC-G-JNE2 support hardware-based firmware updates without service interruption?

Yes. Its dual-bank Flash memory (240 KB upper + 16 KB lower) allows simultaneous execution from one bank while erasing or programming the other. This enables true background firmware updates with zero downtime, verified in Infineon's FM3 Peripheral Manual and confirmed in application notes for OTA implementations.

How many LIN channels does MB9BF124MPMC-G-JNE2 integrate, and what LIN protocol versions are supported?

The device integrates two independent LIN interface channels compliant with LIN protocol specification Rev. 2.1. Each channel supports master/slave mode, programmable break field length (13–16 bits), break delimiter length (1–4 bits), and full error detection including parity, framing, and overrun errors - meeting automotive body electronics requirements per ISO 17987-1.

What low-power modes are available, and which retain RAM content during deep sleep?

Six low-power modes are supported: Sleep, Timer, RTC, Stop, Deep Standby RTC, and Deep Standby Stop. Both Deep Standby RTC and Deep Standby Stop offer optional RAM retention - configurable per application needs. In Deep Standby RTC mode with RAM retention enabled, typical current consumption is ~1.2 μA while maintaining RTC timekeeping and SRAM data integrity.