Infineon Technologies CY9BF122MPMC1-G-JNE2

Overview

CY9BF122MPMC1-G-JNE2 from Infineon Technologies (formerly Cypress) is a 32-bit Arm® Cortex®-M3 microcontroller with dual-bank flash (256 KB), 32 KB on-chip SRAM (16 KB SRAM0 + 16 KB SRAM1), 72 MHz max CPU frequency, and integrated peripherals including UART/CSIO/I²C/LIN interfaces, 26-channel 12-bit ADC, dual 10-bit DAC, and QPRC for motor position sensing - deployed in industrial motor control and embedded sensor hubs.

For engineers reviewing the CY9BF122MPMC1-G-JNE2 datasheet, CY9BF122MPMC1-G-JNE2 pinout, CY9BF122MPMC1-G-JNE2 application, or CY9BF122MPMC1-G-JNE2 equivalent, this page delivers verified package mapping (LQFP-80), validated pin functions, confirmed low-power modes (Deep Standby RTC/Stop), real-time clock with leap-year support, and hardware CRC acceleration for IEEE-802.3/CRC16 integrity checking.

Technical Context

The CY9BF122MPMC1-G-JNE2 implements an Arm Cortex-M3 r2p1 core with nested vectored interrupt controller (48 peripheral interrupts + 1 NMI, 16 priority levels) and 24-bit SysTick timer for RTOS scheduling. It integrates dual-operation flash enabling concurrent read-erase-write across upper (240 KB) and lower (16 KB main + 32 KB work) banks, plus two independent SRAM blocks (SRAM0 on I/D-code bus, SRAM1 on system bus).

Peripheral subsystems include eight-channel DMA with 32-bit addressing, multi-function serial interface supporting four UART/CSIO/LIN/I²C channels with FIFO and hardware flow control (RTS/CTS on ch.4), and dedicated motor-control timers with dead-time insertion, DTIF emergency stop, and A/D activation compare triggers.

Key Specifications

Pinout & Package

LQFP-80 package (12 mm × 12 mm, 0.5 mm pitch), RoHS-compliant, with 65 high-speed GPIOs (some 5 V tolerant), 23 external interrupt inputs, and dedicated pins for main/sub clocks, reset, JTAG/SW debug, and analog supply (AVCC/AVSS).

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 RP2040, CY9BF122MPMC1-G-JNE2 uniquely combines LIN 2.1, QPRC, dual-bank flash, and RTC calendar in a single chip - reducing system complexity for motor control and time-aware embedded nodes without sacrificing code density or power efficiency.

Availability

CY9BF122MPMC1-G-JNE2 is available at Aetrix Electronics and suitable for industrial motor control, smart sensor hubs, automotive body electronics, and energy monitoring systems requiring stable component supply, long-term lifecycle support, and qualified automotive-grade sourcing.

Supply support for CY9BF122MPMC1-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 quality certification to ISO/TS 16949 and AEC-Q100.

This device belongs to the FM3 family of 32-bit Arm Cortex-M3 microcontrollers, designed specifically for cost-sensitive, low-power industrial and automotive embedded control applications requiring integrated analog, motor control, and communication peripherals.

FAQ

What is the maximum operating frequency and supported clock sources?

The CY9BF122MPMC1-G-JNE2 operates at up to 72 MHz using five selectable clock sources: external 4–48 MHz main oscillator, 32.768 kHz sub-clock, built-in 4 MHz high-speed CR oscillator, 100 kHz low-speed CR oscillator, or Main PLL output. The PLL supports both main clock and internal CR oscillator as input sources, enabling flexible frequency synthesis across operating modes.

Does this MCU support LIN communication, and what version is implemented?

Yes, it supports LIN protocol Revision 2.1 in both master and slave modes. Hardware features include programmable break field length (13–16 bits), break delimiter length (1–4 bits), full-duplex double-buffered operation, and error detection for parity, framing, and overrun conditions - meeting automotive LIN physical layer requirements without external transceivers.

How does the dual-bank flash architecture improve firmware reliability?

Dual-bank flash allows simultaneous execution from one bank while erasing or programming the other. This enables safe over-the-air (OTA) or field firmware updates without halting real-time operations - critical for industrial controllers that must maintain uptime during maintenance cycles or security patch deployment.

Is the Real-Time Clock capable of calendar-based alarm triggering?

Yes, the RTC supports calendar-based interrupts down to minute granularity - including alarms set for specific Year/Month/Day/Hour/Minute combinations. It also handles leap-year calculation automatically and allows time updates without stopping the counter, ensuring continuous timekeeping during configuration changes.