Infineon Technologies CY9BF124MBGL-GE1

Overview

CY9BF124MBGL-GE1 from Infineon Technologies (formerly Cypress) is a 32-bit Arm® Cortex®-M3 microcontroller in the FM3 family, operating up to 72 MHz with 256 KB dual-bank Flash (240 KB upper + 16 KB lower), 32 KB SRAM (16 KB SRAM0 + 16 KB SRAM1), and integrated peripherals including 26-channel 12-bit ADC, dual 10-bit 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 CY9BF124MBGL-GE1 datasheet, CY9BF124MBGL-GE1 pinout, CY9BF124MBGL-GE1 application, or CY9BF124MBGL-GE1 equivalent, key selection criteria include dual-bank Flash 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 compatibility.

Technical Context

The CY9BF124MBGL-GE1 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 integration. 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) for deterministic real-time data access.

Peripheral architecture includes a dedicated 8-channel DMA controller 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 for motor control timing precision.

Key Specifications

Pinout & Package

Package: 80-pin LQFP (12 mm × 12 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level 3.

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, CY9BF124MBGL-GE1 uniquely combines dual-bank Flash for robust OTA updates, hardware LIN 2.1 and QPRC support, and 5 V-tolerant I/O - making it optimal for cost-sensitive, mixed-protocol industrial controllers where peripheral integration reduces BOM count and layout complexity.

Availability

CY9BF124MBGL-GE1 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 assurance, and qualified sourcing.

Supply support for CY9BF124MBGL-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

Infineon Technologies is a German semiconductor manufacturer specializing in power management, automotive ICs, and embedded controllers, with global manufacturing and quality certification to ISO/TS 16949 and IEC 61508.

The CY9BF124MBGL-GE1 belongs to the FM3 family of 32-bit Arm Cortex-M3 microcontrollers, designed specifically for cost-optimized, low-power industrial automation and automotive body control applications requiring mixed-protocol connectivity and deterministic real-time response.

FAQ

What is the maximum operating frequency and core revision of the CY9BF124MBGL-GE1?

The CY9BF124MBGL-GE1 operates at up to 72 MHz using the Arm Cortex-M3 processor core revision r2p1. This revision includes full NVIC support with 48 peripheral interrupt lines and 16 programmable priority levels, ensuring deterministic latency for time-critical tasks such as motor control loop execution and real-time communication handling.

Does the CY9BF124MBGL-GE1 support LIN 2.1 protocol natively, and what configuration options are available?

Yes, the CY9BF124MBGL-GE1 supports LIN 2.1 natively through its multi-function serial interface channels. It provides hardware-level break field generation (configurable from 13 to 16 bits) and break delimiter generation (1 to 4 bits), along with master/slave mode selection and full-duplex double-buffered operation - eliminating software protocol stack overhead and ensuring timing compliance with LIN specification.

How does the dual-bank Flash architecture benefit firmware updates in field-deployed systems?

The dual-bank Flash (240 KB upper + 16 KB lower) enables true background firmware updates: while the application runs from the upper bank, new firmware is written to the lower bank, verified, and activated via reset vector remapping. This eliminates downtime and avoids corruption risks associated with single-bank erase-before-write sequences in safety-critical or always-on systems.

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

The CY9BF124MBGL-GE1 supports six low-power modes: Sleep, Timer, RTC, Stop, Deep Standby RTC, and Deep Standby Stop. Both Deep Standby RTC and Deep Standby Stop offer optional RAM retention - configurable via control bits - allowing rapid wake-up with full context restore while drawing sub-1 μA current from the VBAT rail powered by a coin cell.