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Infineon Technologies CY9BF122KQN-G-AVE2
- Part No.:
- CY9BF122KQN-G-AVE2
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
CY9BF122KQN-G-AVE2.pdf
- Description:
- IC MCU 32BIT 160KB FLASH 48QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,600
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Product details
Overview
CY9BF122KQN-G-AVE2 from Infineon Technologies (formerly Cypress) is a 32-bit Arm® Cortex®-M3 microcontroller in the FM3 family, operating up to 72 MHz with dual-bank 256 KB 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 channels, and hardware CRC accelerator. It targets low-power embedded motor control and industrial sensing applications.
For engineers reviewing the CY9BF122KQN-G-AVE2 datasheet, CY9BF122KQN-G-AVE2 pinout, CY9BF122KQN-G-AVE2 application, or CY9BF122KQN-G-AVE2 equivalent, key selection criteria include dual-bank Flash execution capability, 5 V-tolerant I/O support on selected pins, RTC with leap-year handling, six low-power modes (including Deep Standby RTC), and SWJ-DP debug interface compliance.
Technical Context
The CY9BF122KQN-G-AVE2 implements an Arm Cortex-M3 r2p1 core with tightly coupled I/D buses, enabling zero-wait-state Flash execution and concurrent CPU/DMA operation. Its memory subsystem includes dual-bank Flash supporting simultaneous read-while-erase/write and two independent SRAM banks (SRAM0 on I/D bus, SRAM1 on system bus) for deterministic real-time data access.
Peripheral integration centers on deterministic timing control: eight base timers support PWM/PPG/reload/PWC modes; two QPRC units handle quadrature encoder position and revolution counting with configurable A/B/Z input edge detection; and the multi-function timer provides waveform generation, dead-time insertion, and A/D activation triggers-enabling closed-loop motor control without CPU intervention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M3 r2p1, up to 72 MHz - enables deterministic real-time task scheduling with NVIC supporting 48 peripheral interrupts and 16 priority levels. |
| Flash Memory | 256 KB dual-bank (240 KB upper + 16 KB lower), 0 wait-state - allows background firmware updates and secure code protection via bank-level locking. |
| SRAM | 32 KB total (16 KB SRAM0 + 16 KB SRAM1), split bus architecture - isolates instruction/data traffic from system DMA transfers for predictable latency. |
| ADC | 26-channel 12-bit SAR, 0.8 μs conversion @ 5 V, FIFO-supported scanning - supports high-speed sensor acquisition with hardware-triggered sequencing. |
| DAC | 2-channel 10-bit R-2R - provides analog output for reference generation or actuator control with minimal external components. |
| Low-Power Modes | Six modes including Deep Standby RTC with RAM retention - extends battery life in metering and remote monitoring while preserving timekeeping and critical state. |
| 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 fail-safe switching via Clock Super Visor (CSV). |
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; supports 2.7–5.5 V operation with separate analog/digital ground connections for noise isolation. |
| XTAL / EXTAL | Main clock oscillator input/output | Drives 4–48 MHz crystal or external clock source; paired with internal PLL for precise system timing. |
| OSC32 / OSC32B | Sub-clock oscillator input/output | Connects 32.768 kHz crystal for RTC and low-power wake-up timing with automatic leap-year compensation. |
| PA0–PA15, PB0–PB15, etc. | Multi-function GPIO | Up to 65 high-speed I/O pins with per-pin pull-up control, port relocation, and 5 V tolerance on designated pins for mixed-voltage interfacing. |
| SWDIO / SWCLK | Serial Wire Debug interface | Two-pin JTAG-compatible debug port enabling non-intrusive flash programming, breakpoint setting, and real-time register inspection. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-bank Flash memory | Enables seamless firmware updates and secure boot partitioning by allowing erase/write of 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 for communication and storage operations. |
| Quadrature Position Counter (QPRC) | Two independent 16-bit position/revolution counters with configurable A/B/Z input edge detection-supports direct encoder interface for motor position feedback. |
| Real-Time Clock (RTC) | Full BCD calendar (Year/Month/Day/Hour/Minute/Second/Weekday) with leap-year correction and programmable alarm interrupt down to minute granularity. |
| Low-voltage detection (LVD) | Two-stage monitoring (LVD1 interrupt, LVD2 reset) ensures safe shutdown or graceful state save before brownout-induced corruption. |
Applications
| Industrial Motor Control | Smart Energy Metering |
|---|---|
Use Scenario: Closed-loop control of BLDC/PMSM motors in HVAC blowers and pump drives using hall-effect or encoder feedback. IC Role / Device Role / Timing Role: Primary controller executing FOC algorithms, generating PWM with dead-time insertion, and sampling current/voltage via synchronized ADC triggers. Use Value: Integrated QPRC and multi-function timer eliminate external counter ICs; dual-bank Flash enables field-upgradable motor profiles without downtime. | Use Scenario: Residential and commercial electricity meters requiring tamper-resistant time-stamped energy logging and communication over RS-485 or PLC. IC Role / Device Role / Timing Role: System-on-chip managing metrology ADC, RTC timestamping, secure firmware updates, and LIN/UART-based communication stack. Use Value: Hardware CRC32 accelerates DLMS/COSEM frame validation; Deep Standby RTC maintains accurate billing time during power loss with RAM retention. |
| Factory Automation I/O Module | Building Management Sensor Hub |
Use Scenario: DIN-rail mounted digital I/O expansion module with isolated inputs/outputs, diagnostics, and EtherCAT slave interface. IC Role / Device Role / Timing Role: Central MCU handling GPIO scanning, watchdog supervision, error logging to Flash, and real-time EtherCAT processing via DMA-managed buffers. Use Value: Eight UART/CSIO channels support multiple fieldbus interfaces simultaneously; 5 V-tolerant I/O simplifies level-shifting for legacy 24 V sensor inputs. | Use Scenario: Wireless sensor node aggregating temperature, humidity, CO₂, and occupancy data for HVAC optimization in smart buildings. IC Role / Device Role / Timing Role: Low-power host managing multi-sensor polling, data fusion, AES-128 encryption, and scheduled BLE/Wi-Fi transmission bursts. Use Value: Six low-power modes enable sub-10 μA sleep current; built-in LVD2 reset prevents corrupted sensor readings during battery voltage sag. |
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 dedicated QPRC and deep-standby RTC with RAM retention; requires external RTC for timekeeping during power loss | Select when higher SRAM headroom is needed and dual-bank Flash update is not required. |
| RP2040 | Dual-core Arm Cortex-M0+, 2 MB Flash, 264 KB SRAM, USB device, no hardware CRC32 or QPRC | No RTC, no LVD, no 5 V-tolerant I/O; relies on external regulators and timing sources | Select for cost-sensitive consumer IoT where USB connectivity and dual-core parallelism outweigh industrial timing/peripheral requirements. |
Compared with STM32F103VCT6 and RP2040, CY9BF122KQN-G-AVE2 delivers deterministic motor control via integrated QPRC and dead-time PWM, secure field updates via dual-bank Flash, and certified low-power operation with RTC-backed timekeeping-making it uniquely suited for industrial edge nodes requiring functional safety-aware firmware resilience.
Availability
CY9BF122KQN-G-AVE2 is available at Aetrix Electronics and suitable for industrial motor control, smart energy metering, factory automation I/O modules, and building management sensor hubs requiring stable component supply across extended product lifecycles.
Supply support for CY9BF122KQN-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 is a global semiconductor leader headquartered in Munich, Germany, specializing in power management, automotive MCUs, and security solutions with strong industrial and automotive certifications.
The CY9BF122KQN-G-AVE2 belongs to the FM3 family of 32-bit Arm Cortex-M3 microcontrollers, designed specifically for deterministic real-time control in cost-sensitive industrial equipment where low-power operation, peripheral integration, and long-term supply stability are critical.
FAQ
What is the maximum operating frequency and supported voltage range?
The CY9BF122KQN-G-AVE2 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 logic systems and legacy 5 V industrial sensors and actuators without level-shifting circuitry. The device maintains full peripheral functionality-including ADC accuracy and Flash write endurance-across this entire voltage range, as verified in the datasheet's DC characteristics section.
Does this MCU support hardware-accelerated cryptographic operations?
The CY9BF122KQN-G-AVE2 includes a dedicated hardware CRC accelerator supporting CCITT CRC16 and IEEE-802.3 CRC32 polynomials, but it does not integrate AES, SHA, or RSA acceleration engines. For secure boot or encrypted communication, developers must implement cryptographic primitives in software or add external secure elements. The unique 41-bit device ID can be used as a hardware root-of-trust seed for key derivation in such implementations.
How many serial communication interfaces does it provide, and what protocols are supported?
The CY9BF122KQN-G-AVE2 integrates up to eight multi-function serial channels: four with 16×9-bit FIFO (ch.0/1/3/4) and four without FIFO (ch.2/5/6/7). Each channel is software-configurable as UART, CSIO, LIN (Rev. 2.1), or I²C (Standard/Fast mode). LIN master/slave operation, break field generation (13–16 bit), and hardware flow control (CTS/RTS on ch.4) are natively supported without external transceivers.
Is the device qualified for automotive applications?
The CY9BF122KQN-G-AVE2 is not AEC-Q100 qualified and is intended for industrial and commercial applications only. While it shares architectural lineage with Infineon's automotive-grade Traveo™ family, this specific part lacks the extended temperature range (−40°C to +125°C), enhanced ESD immunity, and automotive-specific qualification testing required for under-hood or safety-critical vehicle systems. Its recommended operating range is −40°C to +85°C per datasheet Section 12.2.
CY9BF122KQN-G-AVE2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 48-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:
- 35
- 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 14x12b; D/A 2x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY9BF122KQN-G-AVE2 FAQ
1.How can I place an order for CY9BF122KQN-G-AVE2 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY9BF122KQN-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 CY9BF122KQN-G-AVE2 reliable?
The price and inventory of CY9BF122KQN-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 CY9BF122KQN-G-AVE2 is usually 5 days.
3.What payment methods are accepted for CY9BF122KQN-G-AVE2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY9BF122KQN-G-AVE2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY9BF122KQN-G-AVE2?
CY9BF122KQN-G-AVE2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY9BF122KQN-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 CY9BF122KQN-G-AVE2?
For technical support, including CY9BF122KQN-G-AVE2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY9BF122KQN-G-AVE2 requirements.
6.How does Aetrix verify that CY9BF122KQN-G-AVE2 is sourced from the original manufacturer or authorized distributors?
All CY9BF122KQN-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 CY9BF122KQN-G-AVE2 meets industry standards.
7.What is the process for return or replacement of CY9BF122KQN-G-AVE2?
All CY9BF122KQN-G-AVE2 units undergo pre-shipment inspection (PSI). If there is an issue with CY9BF122KQN-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 CY9BF122KQN-G-AVE2 part is unused and in its original packaging.
Return procedure for CY9BF122KQN-G-AVE2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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