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Infineon Technologies CY9AF341LBQN-G-AVE2
- Part No.:
- CY9AF341LBQN-G-AVE2
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 64-VFQFN Exposed Pad
- Datasheet:
-
CY9AF341LBQN-G-AVE2.pdf
- Description:
- IC MCU 32BIT 96KB FLASH 64QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,443
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Product details
Overview
CY9AF341LBQN-G-AVE2 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), USB 2.0 Full-Speed device/host interface, and 24-channel 12-bit ADC operating in 2.0 µs conversion time. It targets embedded motor control and industrial sensor nodes requiring low-power operation down to Deep Standby RTC mode and real-time HDMI-CEC/remote control processing.
For engineers reviewing the CY9AF341LBQN-G-AVE2 datasheet, CY9AF341LBQN-G-AVE2 pinout, CY9AF341LBQN-G-AVE2 application, or CY9AF341LBQN-G-AVE2 equivalent, key selection criteria include dual-bank Flash update capability, USB host/device coexistence, 83 GPIOs with port relocation, 2-stage LVD reset/interrupt, and SWJ-DP debug support without ETM.
Technical Context
The CY9AF341LBQN-G-AVE2 implements an ARM Cortex-M3 r2p1 core running at up to 40 MHz with NVIC supporting 48 peripheral interrupts and 16 priority levels. Its memory subsystem includes dual-operation Flash (240 KB upper + 16 KB lower bank) enabling concurrent read-while-write, and two independent SRAM banks (SRAM0 on I/D bus, SRAM1 on system bus) for deterministic real-time execution.
Peripheral integration includes a full-featured USB 2.0 controller with built-in PLL, 8-channel DMA with 32-bit addressing, 8-base timers configurable as PWM/PPG/reload/PWC, and dual watchdogs - one hardware-based on 100 kHz CR oscillator active in all low-power modes except Deep Standby Stop/RTC.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M3 r2p1, 40 MHz max - enables deterministic real-time task scheduling with 24-bit SysTick timer for OS kernel use. |
| Flash Memory | 256 KB dual-bank (240 KB upper + 16 KB lower), 0-wait-state - supports seamless firmware updates via bank-swapping without runtime interruption. |
| SRAM | 32 KB total: 16 KB SRAM0 (I/D bus), 16 KB SRAM1 (system bus) - isolates instruction/data access from peripheral DMA transfers. |
| ADC | 24-channel 12-bit SAR, 2.0 µs conversion @ 2.7–3.6 V - meets sub-µs sampling requirements for closed-loop motor current sensing. |
| USB Interface | Full-Speed device/host with integrated PLL, 6 endpoints (EP0–EP5), EP1 double-buffered at 256 bytes - enables HID-class peripherals and host-side USB-to-serial bridges. |
| Low-Power Modes | Six modes including Deep Standby RTC (RAM retention optional) and Deep Standby Stop - achieves <1 µA RTC-only current for battery-backed timekeeping. |
| Debug Interface | Serial Wire JTAG Debug Port (SWJ-DP), no ETM - provides full register/memory access and breakpoint control without trace bandwidth overhead. |
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 |
|---|---|---|
| P00–P07 | General-purpose I/O / Base Timer ch0–ch7 | Configurable as GPIO or timer output; supports 5V-tolerant input on selected pins for mixed-voltage interfacing. |
| P10–P17 | General-purpose I/O / UART0–UART3 / CSIO0–CSIO3 | Multi-function ports with hardware flow control (CTS/RTS) on UART4 only - not supported on CY9AF341LBQN-G-AVE2 per datasheet footnote. |
| P20–P27 | General-purpose I/O / USB D+/D− / HDMI-CEC0/1 | USB differential pair routed internally to PHY; CEC0/CEC1 pins support automatic header/EOM/ACK generation per HDMI-CEC spec. |
| P30–P37 | General-purpose I/O / A/D Converter CH0–CH7 | Analog input channels with programmable scan/priority modes; FIFO buffers reduce CPU polling overhead during multi-channel acquisition. |
| VCC / VSS | Power supply / Ground | Separate analog/digital power domains (AVCC/AVSS) ensure <1 LSB noise margin for 12-bit ADC accuracy. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-bank Flash memory | Enables over-the-air firmware updates with zero downtime: erase/write one bank while executing from the other. |
| Port relocation function | Allows dynamic remapping of peripheral functions (e.g., UART, I²C) to alternate GPIO pins - simplifies PCB layout and avoids signal congestion. |
| HDMI-CEC transmitter/receiver | Hardware-accelerated CEC protocol handling: automatic START/EOM/ACK generation and arbitration loss detection - eliminates software bit-banging overhead. |
| Two independent watchdogs | Hardware watchdog (100 kHz CR clock) remains active in all sleep/stop modes except Deep Standby Stop - ensures fail-safe recovery in battery-powered systems. |
| CRC accelerator | Offloads CCITT CRC16 and IEEE-802.3 CRC32 computation from CPU - reduces integrity check latency for USB/UART packet validation by >90%. |
Applications
| Industrial Motor Control | Smart Home Remote Hub |
|---|---|
|
Use Scenario: Closed-loop BLDC motor drive with current sensing, commutation timing, and thermal monitoring. IC Role / Device Role / Timing Role: Real-time control unit executing FOC algorithm, sampling 3-phase currents via 12-bit ADC, generating PWM signals via Base Timers. Use Value: 2.0 µs ADC conversion and 40 MHz CPU enable <50 µs control loop cycles; dual-bank Flash allows field-upgradable motion profiles. |
Use Scenario: Central IR/CEC hub aggregating commands from multiple remote controls and routing to TVs, soundbars, and streaming boxes. IC Role / Device Role / Timing Role: HDMI-CEC protocol engine and IR demodulator with 4-byte RX buffer and repeat-code detection. Use Value: Hardware CEC transmitter eliminates MCU timing jitter; dual CEC channels support simultaneous TV and audio system control. |
| USB Human Interface Device | Battery-Powered Sensor Node |
|
Use Scenario: Programmable mechanical keyboard with N-key rollover, RGB lighting control, and firmware update capability. IC Role / Device Role / Timing Role: USB Full-Speed device endpoint controller managing HID report descriptors, interrupt IN/OUT transfers, and descriptor requests. Use Value: EP1's 256-byte double buffer handles high-report-rate gaming inputs; SWJ-DP enables in-system debugging without dedicated debug headers. |
Use Scenario: Wireless environmental monitor (temp/humidity/pressure) powered by coin cell, transmitting data via BLE gateway every 5 minutes. IC Role / Device Role / Timing Role: Ultra-low-power sensor aggregator entering Deep Standby RTC mode between measurements, waking on RTC alarm. Use Value: <1 µA RTC current extends 10-year battery life; 2-stage LVD2 auto-reset prevents brownout-induced flash corruption during 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 |
|---|---|---|---|
| STM32F103RCT6 | 72 MHz Cortex-M3, 256 KB Flash, no USB host, no HDMI-CEC, 12-bit ADC @ 1 µs | Lacks USB host and CEC hardware - requires external transceivers and software protocol stacks. | Select when USB device-only and higher CPU speed outweigh CEC/USB host needs. |
| RP2040 | Dual-core ARM Cortex-M0+, 2 MB Flash, USB 1.1 device, no CEC, no hardware watchdog | No USB host or CEC acceleration; relies on software watchdog - unsuitable for safety-critical wake-from-deep-sleep reliability. | Select for cost-sensitive consumer devices where dual-core concurrency matters more than industrial-grade fault tolerance. |
Compared with STM32F103RCT6 and RP2040, CY9AF341LBQN-G-AVE2 uniquely integrates USB host/device coexistence, hardware HDMI-CEC, and dual watchdogs - making it optimal for smart home hubs and industrial controllers requiring guaranteed low-power wake-up and protocol offload.
Availability
CY9AF341LBQN-G-AVE2 is available at Aetrix Electronics and suitable for industrial motor control, smart home remote hubs, USB human interface devices, and battery-powered sensor nodes requiring stable component supply across extended product lifecycles.
Supply support for CY9AF341LBQN-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.
This part belongs to the FM3 family of 32-bit ARM Cortex-M3 microcontrollers, designed specifically for cost-sensitive industrial and consumer embedded systems requiring robust low-power operation, integrated analog peripherals, and USB connectivity.
FAQ
Does CY9AF341LBQN-G-AVE2 support external bus interface?
No. According to the official datasheet (Rev. *D, Page 2), CY9AF341LB, CY9AF342LB, and CY9AF344LB variants explicitly do not support the External Bus Interface. This omission reduces pin count and simplifies PCB layout for applications relying solely on on-chip memory and serial peripherals.
What is the maximum operating voltage when USB functionality is enabled?
The device requires VCC = 3.0 V to 3.6 V when USB is used, as specified in the "Power Supply" section (Page 5). Operating below 3.0 V disables USB PHY operation, though core logic and non-USB peripherals remain functional down to 1.65 V.
Is hardware flow control supported on UART channels?
Hardware flow control (CTS/RTS) is supported only on UART channel 4, and the CY9AF341LBQN-G-AVE2 variant does not implement this feature, as confirmed in the datasheet footnote on Page 2. All UART channels support software XON/XOFF but lack dedicated RTS/CTS pins.
Can the RTC retain time during Deep Standby Stop mode?
Yes. In Deep Standby Stop mode, the RTC continues counting using the 32.768 kHz sub-clock, and its calendar registers remain powered. RAM retention is optional and configurable via control bits - enabling timekeeping with <1 µA current draw while preserving critical state variables.
CY9AF341LBQN-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:
- 96KB (96K 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:
CY9AF341LBQN-G-AVE2 FAQ
1.How can I place an order for CY9AF341LBQN-G-AVE2 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY9AF341LBQN-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 CY9AF341LBQN-G-AVE2 reliable?
The price and inventory of CY9AF341LBQN-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 CY9AF341LBQN-G-AVE2 is usually 5 days.
3.What payment methods are accepted for CY9AF341LBQN-G-AVE2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY9AF341LBQN-G-AVE2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY9AF341LBQN-G-AVE2?
CY9AF341LBQN-G-AVE2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY9AF341LBQN-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 CY9AF341LBQN-G-AVE2?
For technical support, including CY9AF341LBQN-G-AVE2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY9AF341LBQN-G-AVE2 requirements.
6.How does Aetrix verify that CY9AF341LBQN-G-AVE2 is sourced from the original manufacturer or authorized distributors?
All CY9AF341LBQN-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 CY9AF341LBQN-G-AVE2 meets industry standards.
7.What is the process for return or replacement of CY9AF341LBQN-G-AVE2?
All CY9AF341LBQN-G-AVE2 units undergo pre-shipment inspection (PSI). If there is an issue with CY9AF341LBQN-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 CY9AF341LBQN-G-AVE2 part is unused and in its original packaging.
Return procedure for CY9AF341LBQN-G-AVE2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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