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Infineon Technologies CY9AF342LBQN-G-AVE2
- Part No.:
- CY9AF342LBQN-G-AVE2
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 64-VFQFN Exposed Pad
- Datasheet:
-
CY9AF342LBQN-G-AVE2.pdf
- Description:
- IC MCU 32BIT 160KB FLASH 64QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,651
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Product details
Overview
CY9AF342LBQN-G-AVE2 from Infineon Technologies (formerly Cypress) is a 32-bit ARM® Cortex®-M3 microcontroller optimized for embedded control applications requiring low-power operation, integrated USB 2.0 Full-Speed device/host capability, and dual-bank flash memory (240 KB upper + 16 KB lower bank). It operates up to 40 MHz, integrates 32 KB SRAM (16 KB SRAM0 + 16 KB SRAM1), supports 24-channel 12-bit ADC with 2.0 µs conversion time, and features hardware flow control on UART ch.4. Used in industrial HMI, smart sensor nodes, and USB-connected embedded controllers.
For engineers reviewing the CY9AF342LBQN-G-AVE2 datasheet, CY9AF342LBQN-G-AVE2 pinout, CY9AF342LBQN-G-AVE2 application, or CY9AF342LBQN-G-AVE2 equivalent, key selection criteria include dual-bank flash execution-in-place capability, USB host/device coexistence, RTC with leap-year support, 6 low-power modes (including Deep Standby RTC/Stop), and 83 GPIOs with port relocation in 100-pin LQFP package.
Technical Context
The CY9AF342LBQN-G-AVE2 implements an ARM Cortex-M3 r2p1 core with NVIC supporting 48 peripheral interrupts and 16 priority levels, plus a 24-bit SysTick timer for RTOS integration. Its memory subsystem includes dual-operation flash enabling concurrent read-erase-write across banks, and two independent SRAM blocks (SRAM0 on I/D-code buses, SRAM1 on system bus) for deterministic real-time access.
Peripheral architecture features a dedicated DMA controller (8 channels, 32-bit addressing), multi-function serial interface (8 channels configurable as UART/CSIO/I²C), HDMI-CEC/remote receiver (2 channels), and dual watchdog timers - one hardware-based (CR oscillator-clocked, active in all low-power modes except RTC/Stop variants) and one software-controlled.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M3 r2p1, 40 MHz max - enables deterministic real-time task scheduling with hardware divide/multiply 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 while executing code from opposite bank. |
| SRAM | 32 KB total (16 KB SRAM0 + 16 KB SRAM1), separate bus connections - isolates instruction/data traffic from system peripherals for predictable latency. |
| USB Interface | Full-Speed device (6 endpoints, EP1=256B buffer) + host (256B packet, auto IN/OUT handshake) - enables self-hosted USB peripheral management without external hub. |
| A/D Converter | 24-channel 12-bit SAR ADC, 2.0 µs conversion @ 2.7–3.6 V - meets sub-µs sampling requirements for motor current sensing and analog feedback loops. |
| Low-Power Modes | 6 modes including Deep Standby RTC/Stop with RAM retention option - extends battery life in always-on sensor nodes while preserving context across wake events. |
| Package | 100-pin LQFP (14 × 14 mm, 0.5 mm pitch) - provides 83 GPIOs with 5V-tolerant capability on selected pins for mixed-voltage system interfacing. |
Pinout & Package
Package: 100-pin LQFP (14 × 14 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level 3. Pin functions validated per Infineon document 002-05635 Rev. *D, pages 9–15 (Pin Assignment and Pin Function List).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC / VSS | Power supply / Ground | Dual VCC domains (core/analog) with dedicated VSS pairs - reduces switching noise coupling into ADC and RTC circuits. |
| XTAL / EXTAL | Main clock input/output | 4–48 MHz crystal oscillator interface - drives PLL for CPU/USB clocks; supports external clock source bypass mode. |
| OSC32K / OSC32KIN | Sub-clock input | 32.768 kHz crystal connection for RTC and Watch Counter - enables accurate timekeeping and wake-from-sleep timing independent of main clock. |
| USB_DP / USB_DM | USB differential data pair | Full-Speed USB 2.0 physical layer interface - requires 27 Ω series resistors and 1.5 kΩ pull-up on DP for device enumeration. |
| PA0–PA15, PB0–PB15, etc. | General-purpose I/O | 83 total GPIOs with port relocation, individual pull-up control, and direct pin-level read - simplifies PCB layout by decoupling peripheral mapping from physical pin location. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-bank flash memory | Enables Over-The-Air (OTA) firmware updates without halting application execution - critical for remote industrial devices requiring zero-downtime upgrades. |
| USB device + host coexistence | Allows single MCU to act as USB peripheral (e.g., HID keyboard) while simultaneously hosting USB flash drives or sensors - eliminates need for external USB switch or bridge IC. |
| Hardware UART flow control (ch.4 only) | Automatic RTS/CTS handshaking prevents data loss at high baud rates (>1 Mbps) in noisy industrial environments - avoids software-based polling overhead. |
| RTC with leap-year compensation | Maintains calendar accuracy over decades without host intervention - essential for energy metering, environmental logging, and scheduled maintenance systems. |
| Two independent watchdog timers | Hardware watchdog (CR-clocked) remains active in Deep Standby Stop mode; software watchdog offers flexible timeout configuration - provides layered safety for fail-safe embedded control. |
Applications
| Industrial HMI Panel | Smart Energy Meter |
|---|---|
Use Scenario: Touch-enabled local operator interface with USB configuration port and real-time sensor display. IC Role / Device Role / Timing Role: Main application controller managing GUI rendering, USB CDC communication, and 24-channel analog sensor acquisition. Use Value: Dual-bank flash allows field firmware updates via USB while maintaining live HMI operation; RTC ensures accurate timestamping of alarm events. | Use Scenario: DIN-rail mounted electricity meter with tamper detection, pulse output, and USB data export. IC Role / Device Role / Timing Role: System-on-chip performing metrology calculations, tariff scheduling, and secure data logging with calendar-aware billing cycles. Use Value: Leap-year RTC and 6 low-power modes enable >10-year battery-backed operation during power outages; 12-bit ADC supports Class 0.5S metrology accuracy. |
| USB-Capable Sensor Node | Automated Test Equipment (ATE) Controller |
Use Scenario: Battery-powered environmental sensor node with USB reprogramming and wake-on-event capability. IC Role / Device Role / Timing Role: Low-power host managing I²C temperature/humidity sensors, USB mass storage emulation, and wake-from-sleep via external interrupt. Use Value: Deep Standby RTC mode retains RAM and RTC state at <1 µA, enabling precise wake intervals; USB host reads logged data without external MCU. | Use Scenario: Rack-mounted test instrument with programmable signal generation, measurement capture, and PC connectivity. IC Role / Device Role / Timing Role: Real-time sequencer coordinating DAC outputs, ADC sampling, and USB bulk transfers under tight timing constraints. Use Value: Deterministic 40 MHz Cortex-M3 execution and dual SRAM banks prevent bus contention between measurement buffers and USB DMA transfers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32F303VCT6 | ARM Cortex-M4F core, 72 MHz, no USB host, single-bank flash (256 KB), no HDMI-CEC | Lacks USB host and CEC; stronger DSP capability but no dual-bank flash OTA support | Select when floating-point math or motor control PWM advanced timers outweigh USB host and firmware update flexibility. |
| RA4M1 (R7FA4M1AB3CFM) | ARM Cortex-M4, 48 MHz, USB device only, 256 KB flash (single-bank), no hardware UART flow control | No USB host or hardware flow control; includes TrustZone but lacks dual-bank flash concurrency | Prefer for security-critical applications where Arm TrustZone isolation is mandatory and USB host functionality is unnecessary. |
Compared with STM32F303VCT6 and RA4M1, CY9AF342LBQN-G-AVE2 uniquely combines USB device+host, dual-bank flash for seamless OTA, and hardware UART flow control - making it optimal for field-upgradable, USB-connected embedded controllers needing robust industrial I/O and low-power calendar-aware operation.
Availability
CY9AF342LBQN-G-AVE2 is available at Aetrix Electronics and suitable for industrial HMI panels, smart energy meters, USB-capable sensor nodes, and automated test equipment requiring stable component supply, long-term lifecycle support, and consistent pinout across production batches.
Supply support for CY9AF342LBQN-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 German semiconductor manufacturer specializing in power management, automotive MCUs, and industrial control solutions, with global R&D and manufacturing infrastructure.
The CY9A340NB Series belongs to Infineon's FM3 family of 32-bit ARM Cortex-M3 microcontrollers, designed specifically for cost-sensitive, low-power embedded control applications demanding USB connectivity, rich analog integration, and robust real-time performance in industrial and building automation.
FAQ
Does CY9AF342LBQN-G-AVE2 support USB host functionality without external PHY?
Yes. The device integrates a full-speed USB 2.0 host controller with built-in transceiver and PLL clock generation. It supports automatic IN/OUT token handshake, up to 256-byte packet length, and wake-up from low-power modes upon device connection - no external PHY or hub IC required.
What is the maximum operating voltage range when USB is active?
The CY9AF342LBQN-G-AVE2 requires VCC = 3.0 V to 3.6 V when USB functionality is enabled. At lower voltages (1.65–2.99 V), USB operation is disabled, though all other peripherals remain functional - this ensures reliable USB signaling integrity per USB 2.0 Full-Speed specifications.
How does the dual-bank flash architecture improve firmware update reliability?
Dual-bank flash allows simultaneous execution from one bank while erasing/writing to the other. During OTA updates, the active bank runs the current firmware and handles interrupts, while the inactive bank receives new code - eliminating reset-based update windows and preventing bricking due to power loss mid-update.
Is hardware flow control available on all UART channels?
No. Hardware flow control (RTS/CTS) is supported only on UART channel 4, as confirmed in the FM3 Peripheral Manual and datasheet section "Multi-function Serial Interface". Channels 0–3 and 5–7 support software flow control or no flow control - this design prioritizes resource efficiency while meeting industrial RS-485/RS-232 interface needs.
CY9AF342LBQN-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:
- 160KB (160K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 16K 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:
CY9AF342LBQN-G-AVE2 FAQ
1.How can I place an order for CY9AF342LBQN-G-AVE2 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY9AF342LBQN-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 CY9AF342LBQN-G-AVE2 reliable?
The price and inventory of CY9AF342LBQN-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 CY9AF342LBQN-G-AVE2 is usually 5 days.
3.What payment methods are accepted for CY9AF342LBQN-G-AVE2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY9AF342LBQN-G-AVE2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY9AF342LBQN-G-AVE2?
CY9AF342LBQN-G-AVE2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY9AF342LBQN-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 CY9AF342LBQN-G-AVE2?
For technical support, including CY9AF342LBQN-G-AVE2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY9AF342LBQN-G-AVE2 requirements.
6.How does Aetrix verify that CY9AF342LBQN-G-AVE2 is sourced from the original manufacturer or authorized distributors?
All CY9AF342LBQN-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 CY9AF342LBQN-G-AVE2 meets industry standards.
7.What is the process for return or replacement of CY9AF342LBQN-G-AVE2?
All CY9AF342LBQN-G-AVE2 units undergo pre-shipment inspection (PSI). If there is an issue with CY9AF342LBQN-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 CY9AF342LBQN-G-AVE2 part is unused and in its original packaging.
Return procedure for CY9AF342LBQN-G-AVE2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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