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Infineon Technologies CY9BF121MBGL-GK9E1
- Part No.:
- CY9BF121MBGL-GK9E1
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 96-LFBGA
- Datasheet:
-
CY9BF121MBGL-GK9E1.pdf
- Description:
- IC MCU 32BIT 96KB FLASH 96FBGA
- Quantity:
- Payment:
- Shipping:
Inventory:4,846
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Product details
Overview
CY9BF121MBGL-GK9E1 from Infineon Technologies (formerly Cypress) is a 32-bit Arm® Cortex®-M3 microcontroller with dual-bank 256 KB Flash, 32 KB SRAM, 72 MHz max CPU frequency, integrated LIN/UART/I²C/CSIO interfaces, and hardware CRC accelerator. It targets low-power embedded motor control and industrial sensing applications requiring real-time interrupt response and on-the-fly firmware updates.
For engineers reviewing the CY9BF121MBGL-GK9E1 datasheet, CY9BF121MBGL-GK9E1 pinout, CY9BF121MBGL-GK9E1 application, or CY9BF121MBGL-GK9E1 equivalent, key selection criteria include dual-operation Flash bank architecture, 26-channel 12-bit ADC with FIFO, QPRC encoder interface, RTC with leap-year support, and 6 low-power modes including Deep Standby RTC with RAM retention.
Technical Context
This MCU implements the Arm Cortex-M3 r2p1 core with NVIC supporting 48 peripheral interrupts and 16 priority levels. Its memory subsystem includes two independent SRAM banks (SRAM0 for I/D-code, SRAM1 for system bus) and dual-bank Flash enabling concurrent read-while-write operations across upper (240 KB) and lower (16 KB + 32 KB work area) banks.
The peripheral set integrates eight base timers (PWM/PPG/reload/PWC), two 10-bit DACs, dual watchdogs (hardware CR-based and software), Clock Supervision (CSV) for external clock failure detection, and LVD with two-stage voltage monitoring (interrupt + reset). All operate within 2.7–5.5 V supply range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M3 r2p1, up to 72 MHz - enables deterministic real-time execution with Thumb-2 instruction set and 24-bit SysTick timer for OS scheduling. |
| Flash Memory | 256 KB dual-bank (240 KB upper + 16 KB lower + 32 KB work area) - supports simultaneous erase/write/read per bank for robust firmware updates without halting operation. |
| SRAM | 32 KB total (16 KB SRAM0 + 16 KB SRAM1) - SRAM0 connects to I/D buses for zero-wait code/data access; SRAM1 serves as system bus buffer for DMA/peripheral data. |
| ADC | 26-channel 12-bit SAR, 0.8 μs conversion @ 5 V - includes scanning mode with 16-step FIFO and priority-level conversion for multi-sensor sampling in motor control loops. |
| Communication | 8 serial channels (UART/CSIO/LIN/I²C), LIN v2.1 compliant - ch.4 supports hardware RTS/CTS flow control; LIN break field configurable 13–16 bits for flexible node synchronization. |
| Low-Power Modes | 6 modes including Deep Standby RTC - retains RTC time and optionally RAM content during ultra-low-power sleep, powered by 32.768 kHz sub-clock. |
| Clock Sources | 5 sources: 4–48 MHz main oscillator, 32.768 kHz sub-clock, 4 MHz/100 kHz CR oscillators, Main PLL - CSV monitors external clocks using CR references to trigger reset on stop/frequency anomaly. |
Pinout & Package
Package: 80-pin LQFP (12 mm × 12 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC / VSS | Power supply / Ground | Dual VCC pins (Pins 1, 21, 41, 61) and VSS pins (Pins 2, 22, 42, 62) ensure stable core/peripheral rail decoupling and noise immunity. |
| XTAL1 / XTAL2 | Main crystal oscillator input/output | Accepts 4–48 MHz external crystal; drives internal PLL for high-frequency system clock generation. |
| OSC32IN / OSC32OUT | 32.768 kHz sub-clock crystal terminals | Connects to RTC crystal; enables calendar timekeeping and wake-up from Deep Standby RTC mode. |
| PA0–PA15, PB0–PB15, etc. | Multi-function GPIO ports | 65 total high-speed I/Os; each supports pull-up control, direct level read, and port relocation-enables flexible PCB layout and peripheral remapping without hardware change. |
| AIN/BIN/ZIN | Quadrature encoder inputs | Dedicated QPRC inputs with configurable edge detection for position/revolution counting in servo and BLDC motor feedback systems. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-bank Flash with concurrent RWW | Enables background firmware update while executing application code from alternate bank-critical for fail-safe OTA updates in industrial controllers. |
| Hardware CRC accelerator (CRC16/CRC32) | Offloads integrity checking of received CAN/LIN frames or stored configuration data-reduces CPU load by >90% vs. software CRC. |
| Two independent watchdogs | Hardware watchdog (CR-driven) remains active in all low-power modes except Stop/Deep Standby; software watchdog provides application-layer supervision. |
| Real-time clock with leap-year logic | Maintains accurate calendar time across decades without host intervention-eliminates need for external RTC IC in metering and logging applications. |
| Port relocate function | Allows dynamic assignment of UART/LIN/I²C functions to any compatible GPIO pin-simplifies routing and mitigates PCB layout constraints. |
Applications
| Industrial Motor Control | Smart Energy Metering |
|---|---|
Use Scenario: Closed-loop control of BLDC motors in HVAC compressors and industrial pumps using PWM outputs, QPRC encoder feedback, and ADC current sensing. IC Role / Device Role / Timing Role: Real-time controller executing FOC algorithm at 20 kHz PWM frequency with sub-microsecond ADC sampling and hardware dead-time insertion. Use Value: Integrated QPRC and 26-channel ADC reduce BOM count; dual-bank Flash enables safe field firmware upgrades without motor shutdown. | Use Scenario: High-accuracy electricity meter with tariff switching, tamper detection, and secure data logging over 10+ years. IC Role / Device Role / Timing Role: System-on-chip managing metrology ADC, RTC calendar, EEPROM emulation, and secure communication via LIN or UART. Use Value: RTC with leap-year support ensures precise billing intervals; LVD2 auto-reset prevents corrupted flash writes during brownout events. |
| Automotive Body Electronics | Industrial PLC I/O Module |
Use Scenario: LIN slave node for seat position memory, mirror adjustment, and lighting control in passenger vehicles. IC Role / Device Role / Timing Role: LIN protocol handler with automatic break field generation (13–16 bit), error detection, and wakeup-on-LIN functionality. Use Value: Native LIN v2.1 compliance eliminates external transceiver in cost-sensitive nodes; hardware CRC validates command integrity. | Use Scenario: DIN-rail mounted digital I/O module with isolated inputs/outputs, local logic processing, and Modbus RTU over RS-485. IC Role / Device Role / Timing Role: Edge-detecting GPIO controller with interrupt-on-change, 16-bit reload timers for pulse-width measurement, and UART-to-RS485 bridge. Use Value: 65 GPIOs with port relocation simplify custom I/O mapping; Deep Standby Stop mode maintains state during power loss with <1 μA current draw. |
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 |
|---|---|---|---|
| STM32F103VCT6 | 72 MHz Cortex-M3, 256 KB Flash, 48 KB SRAM, no dual-bank Flash or hardware CRC accelerator | Lacks native LIN support; requires external transceiver and software CRC for LIN v2.1 | Select when higher SRAM headroom is needed and LIN is not required. |
| RA4M1 (R7FA4M1AB3CFM) | 48 MHz Cortex-M4F, 256 KB Flash, 32 KB SRAM, no QPRC or LIN peripheral | Includes FPU and TrustZone but lacks dedicated quadrature counter and LIN protocol engine | Select for floating-point math-intensive tasks where encoder counting is handled externally. |
Compared with STM32F103VCT6 and RA4M1, CY9BF121MBGL-GK9E1 uniquely combines dual-bank Flash RWW, hardware LIN v2.1, and QPRC in a single die-reducing component count and firmware complexity for motor and automotive body control designs.
Availability
CY9BF121MBGL-GK9E1 is available at Aetrix Electronics and suitable for industrial motor control, smart energy metering, automotive body electronics, and industrial PLC I/O modules requiring stable component supply, long-term lifecycle support, and qualified automotive-grade reliability.
Supply support for CY9BF121MBGL-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 AG is a German semiconductor manufacturer specializing in power management, automotive, and industrial control ICs, with global R&D and manufacturing infrastructure.
This device belongs to the FM3 family of 32-bit microcontrollers designed specifically for cost-sensitive, low-power embedded control applications requiring rich analog/motor peripherals and robust firmware update capability.
FAQ
What is the maximum operating frequency and supported voltage range?
The CY9BF121MBGL-GK9E1 operates at up to 72 MHz and supports a wide supply voltage range of 2.7 V to 5.5 V. This allows direct interfacing with both 3.3 V and 5 V peripheral circuits without level-shifting, and ensures reliable operation across varying battery or industrial power rail conditions.
Does this MCU support true LIN 2.1 communication without external transceivers?
Yes-it integrates a full LIN 2.1 protocol engine with programmable break field (13–16 bits), break delimiter (1–4 bits), master/slave mode, and hardware error detection. Only a standard LIN physical transceiver (e.g., TLE7259) is required for bus-level signaling; no software protocol stack is needed.
How does the dual-bank Flash architecture improve firmware update safety?
The 256 KB Flash is split into upper (240 KB) and lower (16 KB) banks plus a 32 KB work area. While executing from one bank, the other can be erased and reprogrammed-enabling atomic, rollback-capable firmware updates with zero downtime and no risk of bricking the device during power loss.
What low-power modes retain RTC time and RAM content simultaneously?
Deep Standby RTC mode retains both RTC calendar time and optionally preserves SRAM contents (configurable per bank) while drawing less than 1 μA from the 32.768 kHz sub-clock. This enables decade-long timestamped logging and instant wake-up with full context restoration after extended power loss.
CY9BF121MBGL-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:
- 65
- Program Memory Size:
- 96KB (96K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 16K 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:
CY9BF121MBGL-GK9E1 FAQ
1.How can I place an order for CY9BF121MBGL-GK9E1 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY9BF121MBGL-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 CY9BF121MBGL-GK9E1 reliable?
The price and inventory of CY9BF121MBGL-GK9E1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY9BF121MBGL-GK9E1 is usually 5 days.
3.What payment methods are accepted for CY9BF121MBGL-GK9E1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY9BF121MBGL-GK9E1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY9BF121MBGL-GK9E1?
CY9BF121MBGL-GK9E1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY9BF121MBGL-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 CY9BF121MBGL-GK9E1?
For technical support, including CY9BF121MBGL-GK9E1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY9BF121MBGL-GK9E1 requirements.
6.How does Aetrix verify that CY9BF121MBGL-GK9E1 is sourced from the original manufacturer or authorized distributors?
All CY9BF121MBGL-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 CY9BF121MBGL-GK9E1 meets industry standards.
7.What is the process for return or replacement of CY9BF121MBGL-GK9E1?
All CY9BF121MBGL-GK9E1 units undergo pre-shipment inspection (PSI). If there is an issue with CY9BF121MBGL-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 CY9BF121MBGL-GK9E1 part is unused and in its original packaging.
Return procedure for CY9BF121MBGL-GK9E1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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