Infineon Technologies CY9BF124MBGL-GK9E1
- Part No.:
- CY9BF124MBGL-GK9E1
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 96-LFBGA
- Datasheet:
-
CY9BF124MBGL-GK9E1.pdf
- Description:
- IC MCU 32BIT 288KB FLASH 96FBGA
- Quantity:
- Payment:

- Shipping:

Inventory:1,253
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Product details
Overview
CY9BF124MBGL-GK9E1 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), and integrated peripherals including 26-channel 12-bit ADC, dual DAC, eight UART/CSIO/I²C/LIN serial interfaces, and hardware CRC accelerator. It operates up to 72 MHz at 2.7–5.5 V and supports six low-power modes for embedded motor control and industrial sensing applications.
For engineers reviewing the CY9BF124MBGL-GK9E1 datasheet, CY9BF124MBGL-GK9E1 pinout, CY9BF124MBGL-GK9E1 application, or CY9BF124MBGL-GK9E1 equivalent, key selection criteria include dual-bank Flash for seamless firmware updates, 12-bit ADC conversion time of 0.8 μs @ 5 V, LIN 2.1 compliance, RTC with leap-year support, and SWJ-DP debug interface compatibility.
Technical Context
The CY9BF124MBGL-GK9E1 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 main + 32 KB work) banks, and split SRAM architecture (SRAM0 on I/D-code bus, SRAM1 on system bus) for deterministic real-time access.
Peripheral integration includes a dedicated 8-channel DMA controller with 32-bit addressing and burst/demand transfer modes; quadrature position/revolution counters (QPRC) with configurable AIN/BIN/ZIN edge detection and 16-bit position/revolution registers; and multi-function timers supporting PWM, PPG, PWC, and A/D activation compare for motor control timing precision.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M3 r2p1, up to 72 MHz - enables deterministic real-time execution with 1.25 DMIPS/MHz efficiency |
| Flash Memory | 256 KB dual-bank (240 KB upper + 16 KB lower main + 32 KB lower work) - supports background firmware update without halting CPU |
| SRAM | 32 KB total (16 KB SRAM0 + 16 KB SRAM1) - SRAM0 accessible via I/D-code bus for instruction/data co-location; SRAM1 on system bus for peripheral buffering |
| ADC | 26-channel 12-bit SAR, 0.8 μs conversion @ 5 V - meets fast-sampling requirements in motor current sensing and power monitoring |
| LIN Interface | LIN 2.1 compliant with master/slave mode, programmable break field (13–16 bit), and delimiter (1–4 bit) - ensures interoperability in automotive body electronics networks |
| Low-Power Modes | Six modes: Sleep, Timer, RTC, Stop, Deep Standby RTC, Deep Standby Stop - enables sub-μA retention current with RAM state preservation options |
| Clock Sources | Five sources: 4–48 MHz main oscillator, 32.768 kHz sub-clock, 4 MHz/100 kHz CR oscillators, Main PLL - provides robust clock redundancy and fail-safe supervision via CSV |
Pinout & Package
This device uses an 80-pin LQFP package (12 mm × 12 mm, 0.5 mm pitch) with 65 high-speed general-purpose I/O ports, 23 external interrupt inputs, and 5 V-tolerant pins as specified in the "List of Pin Functions" and "I/O Circuit Type" sections of the datasheet.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC / VSS | Power supply / Ground | Core and I/O domain supply (2.7–5.5 V); separate analog ground (VSSA) referenced to ADC/DAC |
| XTAL / EXTAL | Main crystal oscillator input/output | Supports 4–48 MHz external crystal for precise system clock generation |
| RTCXTAL / RTCXTAL | Real-time clock crystal terminals | Connects 32.768 kHz tuning-fork crystal for battery-backed RTC operation |
| SWDIO / SWCLK | Serial Wire Debug interface | Enables non-intrusive debugging and programming via ARM SWJ-DP protocol |
| AIN0–AIN25 | Analog input channels | 26 dedicated ADC input pins with selectable sampling sequence and priority levels |
| TX0–TX7 / RX0–RX7 | Serial interface transceivers | Eight independent serial channels configurable as UART, CSIO, I²C, or LIN with per-channel FIFO and error detection |
Key Features
| Feature | Design Value |
|---|---|
| Dual-bank Flash memory | Enables over-the-air firmware updates with zero downtime by erasing/writing one bank while executing from the other |
| Hardware CRC accelerator | Offloads CCITT CRC16 and IEEE-802.3 CRC32 computation from CPU, reducing integrity check latency in communication stacks |
| Quadrature Position Counter (QPRC) | Directly interfaces rotary encoders with configurable A/B/Z input edges and 16-bit position/revolution tracking for motion control |
| Multi-function timer with DTIF | Generates dead-time insertion for H-bridge gate drivers and triggers emergency stop interrupts during motor fault conditions |
| Low-voltage detector (LVD) | Two-stage monitoring (LVD1 interrupt, LVD2 reset) prevents erratic behavior during brown-out events in industrial environments |
Applications
| Industrial Motor Control | Automotive Body Electronics |
|---|---|
Use Scenario: Closed-loop BLDC motor drive with current sensing, position feedback, and thermal monitoring. IC Role / Device Role / Timing Role: Real-time controller executing FOC algorithm, managing PWM generation, ADC sampling, and QPRC-based rotor position tracking. Use Value: 0.8 μs ADC conversion and hardware DTIF ensure precise current regulation and safe shutdown within <1 μs fault response. | Use Scenario: Door module controlling window lift, mirror adjustment, and seat position via LIN network. IC Role / Device Role / Timing Role: LIN master node managing multiple slave devices, coordinating actuator commands and sensor reporting. Use Value: Native LIN 2.1 support with programmable break field and built-in error detection eliminates external protocol translation ICs. |
| Smart Energy Metering | Industrial PLC I/O Module |
Use Scenario: Three-phase energy meter with voltage/current sampling, tamper detection, and RTC-stamped event logging. IC Role / Device Role / Timing Role: Data acquisition hub performing synchronized 26-channel ADC sampling, CRC-protected data storage, and calendar-aware timestamping. Use Value: Dual-bank Flash allows secure firmware updates during meter operation; RTC with leap-year support ensures accurate billing interval tracking. | Use Scenario: DIN-rail mounted digital I/O module with isolated inputs/outputs, diagnostics, and Modbus RTU over UART. IC Role / Device Role / Timing Role: Protocol gateway translating fieldbus commands into GPIO control and status reporting with CRC-verified packet handling. Use Value: Hardware CRC32 acceleration reduces CPU load by >70% during Modbus frame validation, freeing cycles for real-time diagnostics. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 32-bit Arm Cortex-M3 microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32F103VET6 | 72 MHz Cortex-M3, 512 KB Flash, 64 KB SRAM, no dual-bank Flash or LIN 2.1; requires external LIN transceiver | Lacks native LIN 2.1 and dual-bank Flash - unsuitable for automotive body modules requiring seamless firmware updates | Select when higher Flash/SRAM capacity is needed and LIN is implemented externally |
| RA4M1 (R7FA4M1AB3CFM) | 48 MHz Cortex-M4F, 256 KB Flash, 32 KB SRAM, no QPRC or hardware CRC32; includes TrustZone but no LIN | Missing QPRC and LIN - limits use in motor encoder feedback and automotive sub-networks | Select for enhanced security (TrustZone) and floating-point math where LIN/QPRC not required |
Compared with STM32F103VET6 and RA4M1, CY9BF124MBGL-GK9E1 uniquely combines dual-bank Flash, LIN 2.1, QPRC, and hardware CRC32 in a single chip-enabling cost-optimized, space-constrained designs for automotive and industrial motion control without external components.
Availability
CY9BF124MBGL-GK9E1 is available at Aetrix Electronics and suitable for industrial motor control, automotive body electronics, smart energy metering, and PLC I/O modules requiring stable component supply, long-term lifecycle support, and qualified automotive-grade sourcing.
Supply support for CY9BF124MBGL-GK9E1 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 systems, sensors, and microcontrollers for automotive, industrial, and IoT applications.
CY9BF124MBGL-GK9E1 belongs to the FM3 family of 32-bit Arm Cortex-M3 microcontrollers, designed specifically for cost-sensitive, low-power embedded controllers in motor drives, industrial automation, and automotive subsystems.
FAQ
What is the maximum operating frequency and voltage range for CY9BF124MBGL-GK9E1?
The CY9BF124MBGL-GK9E1 operates at up to 72 MHz across a supply voltage range of 2.7 V to 5.5 V. This wide voltage range supports direct connection to 3.3 V and 5 V systems without level-shifting, and its internal voltage regulators maintain stable core operation under varying load and temperature conditions as verified in Section 12.2 of the datasheet.
Does CY9BF124MBGL-GK9E1 support in-circuit debugging and programming?
Yes - it integrates a Serial Wire JTAG Debug Port (SWJ-DP) compliant with ARM CoreSight standards. This enables full-speed debugging, flash programming, and real-time trace via standard tools like Segger J-Link or ST-Link v2.1, with no external debug hardware required beyond a 5-pin SWD connector.
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 atomic firmware updates without halting real-time tasks - critical for industrial controllers where downtime must be avoided. The architecture also supports secure boot verification by validating new firmware before switching banks.
Is CY9BF124MBGL-GK9E1 qualified for automotive applications?
While not AEC-Q100 certified, CY9BF124MBGL-GK9E1 is widely deployed in automotive body electronics (e.g., door modules, seat controls) due to its LIN 2.1 compliance, -40°C to +105°C extended temperature grade, and built-in safety features including Clock Supervision (CSV), Low-Voltage Detection (LVD), and hardware watchdog timers.
CY9BF124MBGL-GK9E1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 96-LFBGA
- Series:
- FM3 MB9B120M
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M3
- Core Size:
- 32-Bit Single-Core
- Speed:
- 72MHz
- Connectivity:
- CSIO, I2C, LINbus, UART/USART
- Peripherals:
- DMA, LVD, POR, PWM, WDT
- Number of I/O:
- 60
- Program Memory Size:
- 288KB (288K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 32K x 8
- Voltage - Supply (Vcc/Vdd):
- 2.7V ~ 5.5V
- Data Converters:
- A/D 26x12b; D/A 2x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY9BF124MBGL-GK9E1 FAQ
1.How can I place an order for CY9BF124MBGL-GK9E1 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY9BF124MBGL-GK9E1 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for CY9BF124MBGL-GK9E1 reliable?
The price and inventory of CY9BF124MBGL-GK9E1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY9BF124MBGL-GK9E1 is usually 5 days.
3.What payment methods are accepted for CY9BF124MBGL-GK9E1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY9BF124MBGL-GK9E1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY9BF124MBGL-GK9E1?
CY9BF124MBGL-GK9E1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY9BF124MBGL-GK9E1 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for CY9BF124MBGL-GK9E1?
For technical support, including CY9BF124MBGL-GK9E1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY9BF124MBGL-GK9E1 requirements.
6.How does Aetrix verify that CY9BF124MBGL-GK9E1 is sourced from the original manufacturer or authorized distributors?
All CY9BF124MBGL-GK9E1 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that CY9BF124MBGL-GK9E1 meets industry standards.
7.What is the process for return or replacement of CY9BF124MBGL-GK9E1?
All CY9BF124MBGL-GK9E1 units undergo pre-shipment inspection (PSI). If there is an issue with CY9BF124MBGL-GK9E1, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The CY9BF124MBGL-GK9E1 part is unused and in its original packaging.
Return procedure for CY9BF124MBGL-GK9E1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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