Infineon Technologies CY9BF124MPMC1-G-JNE2

Overview

CY9BF124MPMC1-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 UART/CSIO/I²C/LIN, 26-channel 12-bit ADC, dual DAC, RTC, and eight base timers. It targets low-power embedded motor control and industrial sensor nodes requiring real-time responsiveness and code security.

For engineers reviewing the CY9BF124MPMC1-G-JNE2 datasheet, CY9BF124MPMC1-G-JNE2 pinout, CY9BF124MPMC1-G-JNE2 application, or CY9BF124MPMC1-G-JNE2 equivalent, key selection criteria include dual-bank Flash for safe firmware updates, 5 V-tolerant I/O on selected pins, hardware CRC accelerator for data integrity, and six low-power modes supporting sub-μA deep standby with RTC retention.

Technical Context

This MCU implements the 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 main + 32 KB work) banks, and split SRAM architecture (SRAM0 on I/D bus, SRAM1 on system bus) to reduce core-peripheral contention.

The peripheral set includes eight-channel DMA with 32-bit addressing, quadrature position/revolution counters (QPRC) with 16-bit position/revolution registers and configurable A/B/Z input edge detection, and multi-function serial interfaces supporting UART (with RTS/CTS flow control on ch.4), LIN 2.1 (master/slave, programmable break field), CSIO, and I²C (100/400 kbps).

Key Specifications

Pinout & Package

Package: 80-pin LQFP (12 mm × 12 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level 3. Pin functions are fully relocatable via port mapping registers, enabling flexible PCB layout and peripheral assignment.

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, CY9BF124MPMC1-G-JNE2 uniquely delivers hardware-accelerated LIN 2.1 and QPRC alongside dual-bank Flash-critical for automotive body electronics and motorized appliances where firmware safety and real-time encoder processing are non-negotiable.

Availability

CY9BF124MPMC1-G-JNE2 is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, automotive body electronics, and home appliance controllers requiring stable component supply and long-term lifecycle assurance.

Supply support for CY9BF124MPMC1-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 global semiconductor leader headquartered in Munich, Germany, specializing in power management, automotive MCUs, and security solutions with strong industrial and automotive qualifications.

This device belongs to the FM3 family of 32-bit Arm Cortex-M3 microcontrollers, designed specifically for cost-sensitive, low-power embedded control applications in motor drives, building automation, and consumer appliances where reliability and peripheral integration are critical.

FAQ

Does CY9BF124MPMC1-G-JNE2 support true hardware LIN 2.1 protocol handling?

Yes. The MCU integrates dedicated LIN protocol logic supporting automatic break field generation (13–16 bit length), break delimiter (1–4 bit), and error detection (parity, framing, overrun). It operates in both master and slave modes without CPU intervention, reducing firmware complexity and jitter in automotive body networks.

What is the maximum operating voltage and I/O tolerance for this MCU?

The device operates from 2.7 V to 5.5 V on VCC. Selected GPIO pins-including P00–P07 and P10–P17-are explicitly rated 5 V tolerant per the "I/O Circuit Type" table in the datasheet, enabling direct interfacing with legacy 5 V sensors and actuators without level shifters.

Can the dual-bank Flash be used for atomic firmware updates in the field?

Yes. The dual-bank architecture allows one bank (e.g., upper 240 KB) to run active firmware while the other (lower 16 KB main + 32 KB work) is erased and rewritten. Bootloader logic can validate new firmware and swap execution banks atomically using the Flash control registers and reset vector remapping.

Is the RTC functional in all low-power modes?

No. The RTC remains active only in RTC mode and Deep Standby RTC mode. It is disabled in Sleep, Timer, Stop, and Deep Standby Stop modes. In Deep Standby RTC mode, it continues counting with typical current draw <1.5 μA and optional SRAM retention, making it ideal for calendar-aware wake-up in battery-powered devices.