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Infineon Technologies CY9AF344LBQN-G-AVE2
- Part No.:
- CY9AF344LBQN-G-AVE2
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 64-VFQFN Exposed Pad
- Datasheet:
-
CY9AF344LBQN-G-AVE2.pdf
- Description:
- IC MCU 32BIT 288KB FLASH 64QFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,928
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Product details
Overview
CY9AF344LBQN-G-AVE2 from Infineon Technologies (formerly Cypress) is a 32-bit ARM® Cortex®-M3 microcontroller with 256 KB dual-bank Flash, 32 KB SRAM, USB 2.0 Full-Speed device/host interface, 24-channel 12-bit ADC (2.0 μs conversion), and six low-power modes including Deep Standby RTC/Stop. It targets embedded motor control and industrial HMI systems requiring real-time responsiveness and secure firmware execution.
For engineers reviewing the CY9AF344LBQN-G-AVE2 datasheet, CY9AF344LBQN-G-AVE2 pinout, CY9AF344LBQN-G-AVE2 application, or CY9AF344LBQN-G-AVE2 equivalent, key selection criteria include dual-bank Flash for safe firmware updates, USB host/device capability with 6 endpoints, 100-pin LQFP package with 83 GPIOs (some 5V-tolerant), and integrated RTC with leap-year support.
Technical Context
This MCU implements an ARM Cortex-M3 r2p1 core operating up to 40 MHz with NVIC supporting 48 peripheral interrupts and 16 priority levels. Its memory subsystem includes two independent SRAM banks (SRAM0/SRAM1) connected to I-code/D-code and system buses respectively, enabling concurrent CPU and DMA access.
The peripheral set integrates a 8-channel DMA controller with 32-bit addressing, HDMI-CEC/remote receiver (2 channels), CRC accelerator for CCITT CRC16 and IEEE-802.3 CRC32, and Clock Supervisor (CSV) that monitors external clock failure and frequency anomaly using internal CR oscillators.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | ARM Cortex-M3 r2p1, 40 MHz max - enables deterministic real-time task scheduling with 24-bit SysTick timer for OS integration. |
| Flash Memory | 256 KB dual-bank (240 KB upper + 16 KB lower), 0-wait-state read - supports simultaneous erase/write/read per bank for robust OTA firmware updates. |
| SRAM | 32 KB total (16 KB SRAM0 + 16 KB SRAM1), split bus architecture - isolates instruction/data traffic from system peripherals to reduce contention. |
| ADC | 24-channel 12-bit SAR, 2.0 μs conversion @ 2.7–3.6 V - delivers high-speed analog sensing for motor current/voltage feedback loops. |
| USB Interface | Full-Speed device/host, 6 endpoints (EP0–EP5), double-buffered EP1–EP5 - enables HID-class peripheral connectivity and host-side USB flash drive support. |
| Power Supply | VCC = 1.65–3.6 V (3.0–3.6 V required for USB operation) - accommodates wide-input industrial power rails while maintaining USB compliance. |
| Low-Power Modes | Six modes including Deep Standby RTC/Stop with RAM retention option - extends battery life in always-on remote control receivers and sensor nodes. |
Pinout & Package
Package: 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dedicated analog/digital power pins enable clean separation of noise-sensitive ADC and digital logic domains. |
| XTAL1/XTAL2 | Main clock oscillator input/output | Supports 4–48 MHz crystal or external clock source for precise timing control of USB PLL and system clocks. |
| USB_DP/USB_DM | USB 2.0 Full-Speed differential pair | Internally biased; requires no external termination resistors - simplifies PCB layout for USB device/host functionality. |
| PA0–PA15, PB0–PB15, etc. | General-purpose I/O with port relocate | 83 total GPIOs; flexible peripheral mapping allows routing UART, CSIO, or I²C to non-default pins without hardware redesign. |
| RTC_XTAL1/RTC_XTAL2 | 32.768 kHz RTC crystal interface | Enables autonomous timekeeping during Stop/Deep Standby modes with sub-second accuracy and leap-year compensation. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-bank Flash memory | Enables background firmware updates without halting application execution - critical for field-deployed industrial controllers. |
| Hardware CRC accelerator | Offloads CCITT CRC16 and IEEE-802.3 CRC32 computation from CPU - reduces integrity check latency in communication stacks and firmware validation. |
| USB device/host dual mode | Single silicon supports both peripheral HID devices and host-side mass storage - eliminates need for separate USB controller ICs in compact designs. |
| Port relocate function | Allows dynamic remapping of peripheral functions (e.g., UART0, I²C1) to alternate GPIO sets - increases PCB routing flexibility and design reuse across board variants. |
| Two watchdog timers | Independent hardware (CR-oscillator-clocked) and software watchdogs - ensures fail-safe recovery even during deep sleep or clock fault conditions. |
Applications
| Industrial Motor Control | Smart Home Remote Hub |
|---|---|
Use Scenario: Closed-loop BLDC motor control in HVAC blowers with real-time current sensing and PWM generation. IC Role / Device Role / Timing Role: Main system controller executing FOC algorithms, managing 24-channel ADC sampling at 500 ksps aggregate rate, and driving 8-channel base timers for synchronized PWM outputs. Use Value: Dual-bank Flash enables seamless firmware upgrades during maintenance windows; 6 low-power modes extend runtime in battery-backed emergency operation. | Use Scenario: Central IR/CEC hub aggregating commands from multiple remotes and relaying them to TVs, soundbars, and streaming boxes. IC Role / Device Role / Timing Role: HDMI-CEC transceiver and IR receiver co-processor with built-in 4-byte buffer and repeat code detection, synchronized to RTC for scheduled power-on events. Use Value: Integrated CEC transmitter automates header block transmission and ACK handling - eliminates external protocol translation logic and reduces BOM count. |
| Human-Machine Interface (HMI) | Programmable Logic Controller (PLC) I/O Module |
Use Scenario: Touch-enabled front panel for factory automation equipment with local display refresh and button debounce. IC Role / Device Role / Timing Role: Embedded GUI controller interfacing capacitive touch via ADC channels, driving SPI-connected LCD, and managing USB CDC virtual COM port for configuration. Use Value: 83 GPIOs with 5V-tolerant capability simplify direct connection to legacy industrial sensors and switches without level-shifting components. | Use Scenario: DIN-rail mounted I/O expansion module acquiring analog sensor data and controlling solenoids via isolated outputs. IC Role / Device Role / Timing Role: Data acquisition and control engine performing 12-bit ADC scans on 24 channels, executing cyclic redundancy checks on Modbus RTU frames, and managing watchdog-triggered safe shutdown. Use Value: CRC accelerator reduces CPU load by >70% during serial frame validation; LVD1/LVD2 monitoring prevents erratic behavior during brown-out conditions. |
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, no USB host, no HDMI-CEC, 12-bit ADC @ 1 μs | Lacks integrated USB host and CEC interfaces; requires external PHY for full USB functionality | Select when higher CPU speed and larger Flash are prioritized over CEC/USB host and low-power deep standby modes |
| RA4M1 (R7FA4M1AB3CFM) | 48 MHz Cortex-M4F, 256 KB Flash, USB FS device/host, no CEC, 12-bit ADC @ 0.9 μs | Includes FPU and TrustZone but omits HDMI-CEC receiver/transmitter and RTC leap-year logic | Choose for floating-point math-intensive tasks where CEC is handled externally or omitted entirely |
Compared with STM32F103VET6 and RA4M1, CY9AF344LBQN-G-AVE2 uniquely combines USB host/device, HDMI-CEC, and Deep Standby RTC in a single die - reducing system-level component count and firmware complexity for consumer electronics and industrial remote management applications.
Availability
CY9AF344LBQN-G-AVE2 is available at Aetrix Electronics and suitable for industrial motor control, smart home hubs, HMI panels, and PLC I/O modules requiring stable component supply, long-term lifecycle assurance, and qualified automotive-grade traceability.
Supply support for CY9AF344LBQN-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, industrial, and security solutions with vertical integration from wafer fabrication to system-level validation.
This part belongs to the FM3 family of 32-bit microcontrollers designed specifically for cost-sensitive, low-power embedded applications demanding rich peripheral integration - especially in motor control, remote control, and industrial HMI segments.
FAQ
Does CY9AF344LBQN-G-AVE2 support USB host mode with external device enumeration?
Yes. The integrated USB host controller supports automatic detection of connected/disconnected USB devices, IN/OUT token handshake processing, and packet lengths up to 256 bytes. It operates in Full-Speed and Low-Speed modes and includes wake-up capability for system resume from low-power states.
What is the maximum operating temperature range for this MCU?
The CY9AF344LBQN-G-AVE2 is rated for industrial temperature range: –40 °C to +85 °C. This specification is validated per JEDEC JESD22-A104 and applies across all supported low-power modes and peripheral configurations listed in the official datasheet Rev. *D.
Can the dual-bank Flash be used for secure firmware rollback after failed updates?
Yes. The dual-bank architecture allows one bank to run active firmware while the other receives and validates new code. If verification fails, execution resumes from the known-good bank - providing atomic update semantics without external supervision or bootloader complexity.
Is hardware flow control supported on any UART channel?
No. Hardware flow control (CTS/RTS) is explicitly excluded from CY9AF344LBQN-G-AVE2 per the datasheet - unlike earlier CY9A340NB variants such as CY9AF341LB. Only software-based XON/XOFF flow control is available across all eight serial interface channels.
CY9AF344LBQN-G-AVE2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 64-VFQFN Exposed Pad
- Series:
- FM3 MB9A340NB
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M3
- Core Size:
- 32-Bit Single-Core
- Speed:
- 40MHz
- Connectivity:
- CSIO, I2C, UART/USART, USB
- Peripherals:
- DMA, LVD, POR, PWM, WDT
- Number of I/O:
- 51
- Program Memory Size:
- 288KB (288K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 32K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.65V ~ 3.6V
- Data Converters:
- A/D 12x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY9AF344LBQN-G-AVE2 FAQ
1.How can I place an order for CY9AF344LBQN-G-AVE2 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY9AF344LBQN-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 CY9AF344LBQN-G-AVE2 reliable?
The price and inventory of CY9AF344LBQN-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 CY9AF344LBQN-G-AVE2 is usually 5 days.
3.What payment methods are accepted for CY9AF344LBQN-G-AVE2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY9AF344LBQN-G-AVE2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY9AF344LBQN-G-AVE2?
CY9AF344LBQN-G-AVE2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY9AF344LBQN-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 CY9AF344LBQN-G-AVE2?
For technical support, including CY9AF344LBQN-G-AVE2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY9AF344LBQN-G-AVE2 requirements.
6.How does Aetrix verify that CY9AF344LBQN-G-AVE2 is sourced from the original manufacturer or authorized distributors?
All CY9AF344LBQN-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 CY9AF344LBQN-G-AVE2 meets industry standards.
7.What is the process for return or replacement of CY9AF344LBQN-G-AVE2?
All CY9AF344LBQN-G-AVE2 units undergo pre-shipment inspection (PSI). If there is an issue with CY9AF344LBQN-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 CY9AF344LBQN-G-AVE2 part is unused and in its original packaging.
Return procedure for CY9AF344LBQN-G-AVE2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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