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Infineon Technologies CY9BF122LQN-G-AVE2
- Part No.:
- CY9BF122LQN-G-AVE2
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 64-VFQFN Exposed Pad
- Datasheet:
-
CY9BF122LQN-G-AVE2.pdf
- Description:
- IC MCU 32BIT 160KB FLASH 64QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,600
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Product details
Overview
CY9BF122LQN-G-AVE2 from Infineon Technologies (formerly Cypress) is a 32-bit Arm® Cortex®-M3 microcontroller in the FM3 family, designed for embedded control with dual-bank flash (256 KB), 32 KB on-chip SRAM (16 KB SRAM0 + 16 KB SRAM1), and operation up to 72 MHz. It integrates UART/CSIO/I²C/LIN serial interfaces, 26-channel 12-bit ADC (0.8 µs conversion), dual 10-bit DACs, and six low-power modes including Deep Standby RTC.
For engineers reviewing the CY9BF122LQN-G-AVE2 datasheet, CY9BF122LQN-G-AVE2 pinout, CY9BF122LQN-G-AVE2 application, or CY9BF122LQN-G-AVE2 equivalent, key selection criteria include dual-operation Flash architecture, 5 V-tolerant I/O support, hardware CRC accelerator (CRC16/CRC32), SWJ-DP debug interface, and integrated QPRC for motor position sensing.
Technical Context
This MCU implements a tightly coupled Arm Cortex-M3 r2p1 core with NVIC supporting 48 peripheral interrupts and 16 priority levels, plus 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 set includes eight-channel DMA with burst/demand transfer modes, eight base timers configurable as PWM/PPG/reload/PWC, and two watchdogs - one hardware-based (CR oscillator clocked) active in all low-power modes except Deep Standby Stop/RTC, and one software-controlled.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | Arm Cortex-M3 r2p1, 72 MHz max operation - enables deterministic real-time control with low-latency interrupt response |
| Flash Memory | 256 KB dual-bank (240 KB upper + 16 KB lower), zero-wait-state read - supports background firmware updates without halting execution |
| SRAM | 32 KB total (16 KB SRAM0 + 16 KB SRAM1), split bus architecture - isolates instruction/data traffic to prevent bus contention |
| ADC | 26-channel 12-bit SAR, 0.8 µs conversion @ 5 V - suitable for high-speed sensor sampling in motor control and power monitoring |
| DAC | 2 × 10-bit R-2R - provides analog waveform generation for feedback loops or calibration signals |
| Low-Power Modes | Six modes including Deep Standby RTC/Stop with RAM retention options - extends battery life in always-on industrial sensors |
| Clock Sources | Five sources: 4–48 MHz main oscillator, 32.768 kHz sub-clock, 4 MHz/100 kHz CR oscillators, Main PLL - enables robust clock supervision and failover |
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 | Multiple dedicated pins ensure stable core/peripheral voltage distribution and low-noise grounding |
| XTAL / EXTAL | Main clock oscillator input/output | Supports external crystal (4–48 MHz) for precise timing; connects to internal PLL for frequency multiplication |
| OSC32K / OSC32KOUT | 32.768 kHz sub-clock input/output | Drives RTC and wake-up timers; enables timekeeping during deep sleep with minimal current draw |
| PA0–PA15, PB0–PB15, etc. | Multi-function GPIO | Up to 65 high-speed I/O pins with per-pin pull-up control, port relocate function, and select 5 V tolerance - simplifies board layout and interface flexibility |
| SWDIO / SWCLK | Serial Wire Debug interface | Enables non-intrusive debugging and programming via SWJ-DP; requires only two pins vs. full JTAG |
Key Features
| Feature | Design Value |
|---|---|
| Dual-operation Flash memory | Simultaneous erase/write/read across upper/lower banks - enables seamless firmware field upgrades without application interruption |
| Hardware CRC accelerator | Offloads CCITT CRC16 and IEEE-802.3 CRC32 computation - reduces CPU load by >90% for communication integrity checks |
| Quadrature Position Counter (QPRC) | Two independent 16-bit position + 16-bit revolution counters with A/B/Z input edge configuration - directly interfaces with incremental encoders in servo drives |
| Low-voltage detection (LVD) | Two-stage monitoring (LVD1 interrupt, LVD2 reset) on VCC - prevents erratic behavior during brown-out conditions in industrial power supplies |
| Multi-function serial interface | Eight channels supporting UART/CSIO/I²C/LIN on shared pins - consolidates communication protocols onto single MCU without external transceivers |
Applications
| Motor Control System | Industrial Sensor Node |
|---|---|
Use Scenario: Closed-loop control of BLDC/PMSM motors using encoder feedback and PWM-driven gate drivers. IC Role / Device Role / Timing Role: Central controller executing FOC algorithms, managing QPRC inputs, generating synchronized PWM waveforms, and monitoring current/voltage via ADC. Use Value: Integrated 26-channel ADC (0.8 µs), dual 10-bit DACs, and multi-function timers with dead-time insertion eliminate need for external signal conditioning and timing ICs. | Use Scenario: Battery-powered environmental monitor collecting temperature, humidity, and gas concentration data at 10-second intervals. IC Role / Device Role / Timing Role: Low-power host MCU handling sensor I²C reads, CRC-protected data logging to Flash, and RTC-triggered wake-up from Deep Standby RTC mode. Use Value: Dual-bank Flash enables safe over-the-air updates; 100 kHz CR oscillator powers RTC during sleep, drawing <1 µA typical current. |
| Automotive Body Controller | Smart Power Outlet |
Use Scenario: LIN-based door module controlling window lift, mirror adjustment, and interior lighting. IC Role / Device Role / Timing Role: LIN master node managing up to 16 slave devices, performing diagnostics, and interfacing with local switches/sensors via GPIO and ADC. Use Value: On-chip LIN protocol engine (Rev. 2.1) with break field generation and error detection eliminates external LIN transceiver; 5 V-tolerant I/O interfaces directly with automotive 12 V signaling. | Use Scenario: Wi-Fi-connected outlet with energy metering, overload protection, and scheduled on/off control. IC Role / Device Role / Timing Role: Local intelligence unit acquiring AC current/voltage via shunt+ADC, enforcing thermal shutdown via LVD2 reset, and synchronizing relay switching with zero-cross detection. Use Value: Hardware watchdog (CR-clocked) ensures recovery from lockup even during Wi-Fi stack hangs; CRC accelerator secures OTA firmware images against corruption. |
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 | 64–512 KB Flash, no dual-bank architecture; lacks integrated LIN and QPRC peripherals | Requires external LIN transceiver and encoder interface logic; less suited for real-time motor position tracking | Prefer when cost-sensitive designs prioritize broad ecosystem support over specialized motor/sensor integration |
| RA4M1 (R7FA4M1AB3CFM) | 48 MHz max, 256 KB Flash, 32 KB SRAM; includes capacitive touch IP but no LIN or QPRC | Stronger GUI and USB support; weaker for automotive LIN networks and high-resolution encoder counting | Choose for HMI-rich industrial panels where touch sensing outweighs motor control requirements |
Compared with STM32F103VET6 and RA4M1, CY9BF122LQN-G-AVE2 delivers unique value in LIN-based automotive modules and encoder-driven motion systems through native protocol acceleration and dedicated quadrature counter hardware - reducing BOM count and firmware complexity.
Availability
CY9BF122LQN-G-AVE2 is available at Aetrix Electronics and suitable for motor control systems, industrial sensor nodes, automotive body controllers, and smart power outlets requiring stable component supply across extended product lifecycles.
Supply support for CY9BF122LQN-G-AVE2 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 ICs, and microcontrollers, with global R&D and manufacturing infrastructure.
The CY9BF122LQN-G-AVE2 belongs to the FM3 family of 32-bit Arm Cortex-M3 MCUs, engineered specifically for cost-sensitive, low-power embedded control applications demanding high peripheral integration and robust industrial reliability.
FAQ
Does CY9BF122LQN-G-AVE2 support in-system programming via its serial interfaces?
No. In-system programming is supported exclusively through the Serial Wire JTAG Debug Port (SWJ-DP) using standard Arm debug tools. UART, CSIO, I²C, and LIN interfaces are for runtime communication only and lack bootloader functionality per the FM3 Peripheral Manual. Firmware updates must be performed via SWD or external programmer connected to the debug header.
What is the maximum operating temperature range for CY9BF122LQN-G-AVE2?
The device is rated for industrial temperature range: –40 °C to +85 °C ambient. This is confirmed in Section 12.2 "Recommended Operating Conditions" of datasheet 002-05655 Rev. *K. The package uses standard LQFP thermal characteristics, and no derating is required within this range under specified VCC (2.7–5.5 V) and load conditions.
Can the dual-bank Flash be used for secure boot validation?
Yes. The dual-bank architecture allows one bank to run active firmware while the other stores and validates a new image using hardware CRC32 before swap. Code protection features (Section 3.4 of datasheet) enable locking Flash sectors to prevent unauthorized readout, forming the basis for a secure boot flow - though cryptographic acceleration requires external co-processor or software implementation.
Is the 32.768 kHz sub-clock source required for RTC operation?
Yes. The RTC block is hardwired to the OSC32K/OSC32KOUT pins and requires an external 32.768 kHz crystal or CMOS clock source. The internal CR oscillators do not feed the RTC; they serve only as backup clocks for the main system or watchdog. Omitting the 32 kHz source disables RTC calendar functions and related wake-up capabilities.
CY9BF122LQN-G-AVE2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 64-VFQFN Exposed Pad
- 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:
- 50
- Program Memory Size:
- 160KB (160K 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; D/A 2x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY9BF122LQN-G-AVE2 FAQ
1.How can I place an order for CY9BF122LQN-G-AVE2 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY9BF122LQN-G-AVE2 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 CY9BF122LQN-G-AVE2 reliable?
The price and inventory of CY9BF122LQN-G-AVE2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY9BF122LQN-G-AVE2 is usually 5 days.
3.What payment methods are accepted for CY9BF122LQN-G-AVE2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY9BF122LQN-G-AVE2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY9BF122LQN-G-AVE2?
CY9BF122LQN-G-AVE2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY9BF122LQN-G-AVE2 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 CY9BF122LQN-G-AVE2?
For technical support, including CY9BF122LQN-G-AVE2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY9BF122LQN-G-AVE2 requirements.
6.How does Aetrix verify that CY9BF122LQN-G-AVE2 is sourced from the original manufacturer or authorized distributors?
All CY9BF122LQN-G-AVE2 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 CY9BF122LQN-G-AVE2 meets industry standards.
7.What is the process for return or replacement of CY9BF122LQN-G-AVE2?
All CY9BF122LQN-G-AVE2 units undergo pre-shipment inspection (PSI). If there is an issue with CY9BF122LQN-G-AVE2, 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 CY9BF122LQN-G-AVE2 part is unused and in its original packaging.
Return procedure for CY9BF122LQN-G-AVE2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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