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Infineon Technologies CY9BF121LPMC1-GNE2
- Part No.:
- CY9BF121LPMC1-GNE2
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
CY9BF121LPMC1-GNE2.pdf
- Description:
- IC MCU 32BIT 96KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,915
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Product details
Overview
CY9BF121LPMC1-GNE2 from Infineon Technologies (formerly Cypress) is a 32-bit Arm® Cortex®-M3 microcontroller with 256 KB dual-bank Flash, 32 KB on-chip SRAM (16 KB SRAM0 + 16 KB SRAM1), and operation up to 72 MHz. It integrates UART, I²C, LIN, CSIO, 12-bit ADC (26 channels, 0.8 μs conversion), dual 10-bit DAC, RTC, QPRC, and eight-channel DMA - deployed in motor control, industrial sensing, and embedded HMI systems.
For engineers reviewing the CY9BF121LPMC1-GNE2 datasheet, CY9BF121LPMC1-GNE2 pinout, CY9BF121LPMC1-GNE2 application, or CY9BF121LPMC1-GNE2 equivalent, key selection criteria include dual-bank Flash for seamless firmware updates, 5 V-tolerant GPIOs across 65 pins, low-power modes down to Deep Standby Stop, and integrated LIN 2.1 support for automotive body electronics.
Technical Context
This MCU implements a tightly coupled 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 independent I-code/D-code buses for SRAM0 and system bus for SRAM1, enabling concurrent instruction fetch and data access.
The peripheral architecture includes eight base timers (PWM/PPG/reload/PWC), two quadrature position/revolution counters with 16-bit position and revolution registers, and a dedicated CRC accelerator supporting CCITT CRC16 and IEEE-802.3 CRC32 for robust data integrity in communication and storage paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M3 r2p1, 72 MHz max - enables deterministic real-time execution with hardware divide and Thumb-2 instruction set. |
| Flash Memory | 256 KB dual-bank (240 KB upper + 16 KB lower), 0-wait-state read - supports background erase/write for live firmware updates without halting execution. |
| SRAM | 32 KB total: 16 KB SRAM0 (I/D bus), 16 KB SRAM1 (system bus) - allows parallel code/data access and DMA-to-SRAM transfers without CPU contention. |
| ADC | 12-bit SAR, 26 channels, 0.8 μs conversion @ 5 V - delivers high-speed sampling for closed-loop motor control and sensor fusion. |
| DAC | Two 10-bit R-2R DACs - provides analog output for calibration signals, biasing, or simple waveform generation without external components. |
| Low-Power Modes | Six modes including Deep Standby Stop with RAM retention - reduces active current to µA range while preserving context for rapid wake-up in battery-powered nodes. |
| Communication | UART (4 ch w/ FIFO), I²C (100/400 kbps), LIN 2.1 (master/slave), CSIO - meets requirements for multi-protocol automotive and industrial fieldbus integration. |
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 | Core and I/O supply pins supporting 2.7–5.5 V operation; multiple pairs ensure stable decoupling and noise immunity. |
| XTAL / EXTAL | Main clock oscillator input/output | Accepts 4–48 MHz crystal or external clock source for precise timing and PLL reference. |
| RTC_XTAL / RTC_EXTAL | Sub-clock oscillator input/output | Connects 32.768 kHz crystal for RTC and low-power wake-up timer functions. |
| PA0–PA15, PB0–PB15, etc. | Multi-function GPIO | 65 total high-speed I/O pins with port relocate, pull-up control, and 5 V tolerance on selected pins per "I/O Circuit Type" table. |
| SWDIO / SWCLK | Serial Wire Debug interface | Enables non-intrusive debugging, flash programming, and real-time trace via standard ARM SWJ-DP protocol. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-bank Flash memory | Enables Over-The-Air (OTA) firmware updates with zero downtime: one bank executes while the other is erased/written. |
| Integrated LIN 2.1 controller | Eliminates need for external LIN transceiver in slave nodes; supports break field (13–16 bit) and delimiter (1–4 bit) programmability. |
| Quadrature Position Counter (QPRC) | Directly interfaces rotary encoders with 16-bit position/revolution counters and configurable A/B/Z input edge detection. |
| CRC accelerator (CRC16/CRC32) | Offloads integrity checking from CPU - reduces software overhead for CAN/LIN message validation and flash sector verification. |
| Hardware watchdog + software watchdog | Dual independent watchdogs: hardware WD runs on 100 kHz CR oscillator (active in all low-power modes except Deep Standby), software WD uses main clock domain. |
Applications
| Motor Control System | Automotive Body Controller |
|---|---|
Use Scenario: Brushless DC motor drive with real-time current sensing and commutation logic. IC Role / Device Role / Timing Role: Central controller executing FOC algorithm, generating PWM with dead-time insertion, triggering ADC sampling synchronized to PWM edges. Use Value: Integrated 12-bit ADC (0.8 μs), eight base timers with PPG/PWM modes, and dual DACs enable compact, cost-effective motor control without external signal conditioning. | Use Scenario: Door module managing window lift, mirror adjustment, and interior lighting via LIN network. IC Role / Device Role / Timing Role: LIN master node coordinating slave ECUs, handling switch inputs, driving LED drivers, and logging fault events to nonvolatile memory. Use Value: On-chip LIN 2.1 controller, 5 V-tolerant GPIOs for direct switch interfacing, and RTC for timestamped diagnostics reduce BOM count and PCB area. |
| Industrial Sensor Node | Smart HVAC Controller |
Use Scenario: Wireless temperature/humidity node with local PID regulation and battery-backed data logging. IC Role / Device Role / Timing Role: Sensor aggregator running low-power scheduler, performing ADC conversions, storing calibrated values in Flash, and waking periodically for RF transmission. Use Value: Six low-power modes (e.g., Deep Standby RTC with RAM retention) extend battery life; CRC accelerator ensures reliable flash write integrity during brown-out conditions. | Use Scenario: Wall-mounted thermostat with touch interface, ambient sensing, and HVAC actuator control. IC Role / Device Role / Timing Role: Human-machine interface processor managing capacitive touch, driving segment LCD, reading thermistor/NTC inputs, and modulating fan speed via PWM. Use Value: 65 GPIOs with port relocate simplify layout; integrated RTC maintains accurate time across power cycles; wide 2.7–5.5 V supply accommodates varied power sources. |
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 LIN controller | Lacks native LIN 2.1; requires external transceiver and software stack for automotive body networks | Preferred where higher SRAM and USB are needed, but LIN integration is not required |
| RA4M1 (R7FA4M1AB3CFM) | 48 MHz Cortex-M4F, 256 KB Flash, 32 KB SRAM, no QPRC or dual-bank Flash | Includes FPU and TrustZone; lacks quadrature encoder counter and LIN hardware block | Chosen for floating-point math or security-critical firmware, not for motor position feedback or LIN slave roles |
Compared with STM32F103VCT6 and RA4M1, CY9BF121LPMC1-GNE2 uniquely combines dual-bank Flash for safe OTA updates, hardware LIN 2.1, and QPRC - making it optimal for cost-sensitive, function-specific automotive and industrial motion control designs where those peripherals are mandatory.
Availability
CY9BF121LPMC1-GNE2 is available at Aetrix Electronics and suitable for motor control systems, automotive body electronics, industrial sensor nodes, and smart HVAC controllers requiring stable component supply and long-term lifecycle support.
Supply support for CY9BF121LPMC1-GNE2 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 ICs, and embedded controllers, with global manufacturing and quality certification to ISO/TS 16949 and IEC 61508.
CY9BF121LPMC1-GNE2 belongs to the FM3 family of 32-bit microcontrollers designed specifically for cost-optimized, low-power embedded control in automotive body electronics, industrial automation, and appliance applications.
FAQ
What is the maximum operating frequency and supported voltage range?
The CY9BF121LPMC1-GNE2 operates at up to 72 MHz using its Arm Cortex-M3 core 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 enables flexible power design in mixed-voltage systems such as automotive body modules and industrial sensors.
Does this MCU include hardware support for LIN communication?
Yes, the CY9BF121LPMC1-GNE2 integrates a dedicated LIN 2.1 controller supporting both master and slave modes. It includes hardware generation of LIN break fields (13–16 bit) and delimiters (1–4 bit), automatic checksum calculation, and error detection - eliminating the need for external LIN transceivers in slave nodes and reducing firmware overhead in master implementations.
How many analog-to-digital converter channels does it have, and what is their performance?
The device features two independent 12-bit successive approximation ADC units supporting up to 26 input channels. Each conversion completes in 0.8 μs at 5 V supply, with optional priority-based scanning and built-in FIFOs (16-step for scan, 4-step for priority). This enables high-fidelity sampling for motor current sensing, temperature monitoring, and multi-sensor data acquisition in real-time control loops.
Is there on-chip debug capability, and what interface is used?
Yes, the CY9BF121LPMC1-GNE2 includes a Serial Wire JTAG Debug Port (SWJ-DP) compliant with ARM CoreSight standards. It supports full-speed debugging, flash programming, and real-time variable inspection via SWDIO and SWCLK pins - requiring only two physical connections and no dedicated JTAG TAP controller, simplifying test fixture design and field firmware updates.
CY9BF121LPMC1-GNE2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 64-LQFP
- Series:
- FM3 MB9B120M
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M3
- Core Size:
- 32-Bit
- Speed:
- 72MHz
- Connectivity:
- CSIO, I2C, LINbus, UART/USART
- Peripherals:
- DMA, LVD, POR, PWM, WDT
- Number of I/O:
- 50
- 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 23x12b SAR; D/A 2x10b
- Oscillator Type:
- External, Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY9BF121LPMC1-GNE2 FAQ
1.How can I place an order for CY9BF121LPMC1-GNE2 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY9BF121LPMC1-GNE2 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 CY9BF121LPMC1-GNE2 reliable?
The price and inventory of CY9BF121LPMC1-GNE2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY9BF121LPMC1-GNE2 is usually 5 days.
3.What payment methods are accepted for CY9BF121LPMC1-GNE2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY9BF121LPMC1-GNE2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY9BF121LPMC1-GNE2?
CY9BF121LPMC1-GNE2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY9BF121LPMC1-GNE2 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 CY9BF121LPMC1-GNE2?
For technical support, including CY9BF121LPMC1-GNE2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY9BF121LPMC1-GNE2 requirements.
6.How does Aetrix verify that CY9BF121LPMC1-GNE2 is sourced from the original manufacturer or authorized distributors?
All CY9BF121LPMC1-GNE2 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 CY9BF121LPMC1-GNE2 meets industry standards.
7.What is the process for return or replacement of CY9BF121LPMC1-GNE2?
All CY9BF121LPMC1-GNE2 units undergo pre-shipment inspection (PSI). If there is an issue with CY9BF121LPMC1-GNE2, 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 CY9BF121LPMC1-GNE2 part is unused and in its original packaging.
Return procedure for CY9BF121LPMC1-GNE2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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