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Infineon Technologies CY9AF312LAQN-G-AVE2
- Part No.:
- CY9AF312LAQN-G-AVE2
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 64-VFQFN Exposed Pad
- Datasheet:
-
CY9AF312LAQN-G-AVE2.pdf
- Description:
- IC MCU 32BIT 128KB FLASH 64QFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,155
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Product details
Overview
CY9AF312LAQN-G-AVE2 from Infineon Technologies (formerly Cypress) is a 32-bit Arm® Cortex®-M3 microcontroller with 512 KB on-chip Flash, 32 KB SRAM (split into two 16 KB banks), USB 2.0 Full-Speed device/host interface, and integrated motor control peripherals including 8-channel Base Timers, 2-unit QPRC, and multi-function serial interfaces supporting UART/CSIO/LIN/I²C. It operates up to 40 MHz and targets embedded motor control and industrial automation systems.
For engineers reviewing the CY9AF312LAQN-G-AVE2 datasheet, CY9AF312LAQN-G-AVE2 pinout, CY9AF312LAQN-G-AVE2 application, or CY9AF312LAQN-G-AVE2 equivalent, key selection criteria include USB dual-role capability, 12-bit ADC with FIFO and priority scanning, external bus interface support (8 chip selects, 25-bit addressing), 8-channel DMA, and low-power modes (SLEEP/TIMER/STOP) with watchdog and clock supervisor.
Technical Context
The CY9AF312LAQN-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 zero-wait-state Flash and dual-bus-connected SRAM banks (SRAM0 on I/D-code bus, SRAM1 on system bus), enabling concurrent CPU and DMA access.
Peripheral architecture integrates dedicated hardware accelerators: CRC16/32 engine for data integrity, dual watchdog timers (hardware clocked by 100 kHz CR oscillator, active in all low-power modes except STOP), and clock supervisor monitoring external crystal failure or frequency anomaly. The USB module includes built-in PLL and supports up to 6 endpoints with configurable transfer types and double buffering.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M3 r2p1, 40 MHz max operation - enables deterministic real-time control with Thumb-2 instruction set and NVIC interrupt handling. |
| Memory | 512 KB Flash (0 wait-state), 32 KB SRAM (16 KB SRAM0 + 16 KB SRAM1) - supports fast code execution and concurrent data buffering for DMA/peripheral operations. |
| USB Interface | USB 2.0 Full-Speed device/host with built-in PLL, 6 endpoints (EP0–EP5), double-buffered - enables embedded host capability for peripheral enumeration and device-mode connectivity without external PHY. |
| ADC | 12-bit SAR ADC, 16 channels, 1.0 μs conversion @5 V, FIFO (16-step scan / 4-step priority) - delivers high-speed analog acquisition with flexible sequencing for sensor fusion or motor current sensing. |
| Timers | 8-channel Base Timer (PWM/PPG/reload/PWC), 2-unit QPRC (16-bit position/revolution counters), 2-unit Multi-function Timer (input capture/output compare/A/D activation) - provides full motor control waveform generation, encoder feedback, and precise timing events. |
| Power & Safety | VCC = 2.7–5.5 V; dual LVD (interrupt/reset), Clock Supervisor (external clock failure detection), hardware/software watchdog - ensures robust operation under voltage fluctuation and clock fault conditions. |
| Communication | 8-channel serial interface (UART/CSIO/LIN/I²C), LIN 2.1 compliant, I²C Fast-mode (400 kbps), hardware flow control on ch.4 - supports automotive body control, industrial fieldbus, and multi-protocol sensor interfacing. |
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 port group 0 | Configurable as GPIO, UART0 TX/RX, CSIO0, or LIN0; supports pull-up and direct read; relocatable peripheral assignment. |
| P10–P17 | General-purpose I/O port group 1 | Supports USB D+/D− (P14/P15), ADC0–7 inputs, Base Timer outputs, and external interrupt inputs (INT0–INT7). |
| P20–P27 | General-purpose I/O port group 2 | Includes QPRC AIN/BIN/ZIN (P20–P22), Multi-function Timer input capture (P23–P26), and external bus address/data lines. |
| P30–P37 | General-purpose I/O port group 3 | Supports external bus interface (A0–A24, D0–D15), CS0–CS7 chip select outputs, and RDY handshake signal. |
| VCC / VSS | Power supply / Ground | Dual power domains: VCC (2.7–5.5 V) for core/peripherals; USBVCC (3.0–3.6 V) required only when USB I/O is active. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-bank SRAM architecture | SRAM0 (16 KB) on I/D-code bus enables simultaneous instruction fetch and data access; SRAM1 (16 KB) on system bus allows independent DMA transfers without CPU contention. |
| Motor control timer suite | 8-channel Base Timer + 2-unit QPRC + 2-unit Multi-function Timer provide synchronized PWM generation, dead-time insertion, encoder position tracking, and A/D trigger alignment for brushless DC motor commutation. |
| USB dual-role capability | Built-in USB 2.0 Full-Speed device/host controller with integrated PLL eliminates need for external clock source or PHY, reducing BOM count and PCB area in portable or hub-like applications. |
| CRC acceleration engine | Hardware CCITT CRC16 and IEEE-802.3 CRC32 calculation offloads CPU during firmware update verification, communication packet integrity checks, and flash memory error detection. |
| Low-power supervision | Hardware watchdog clocked by 100 kHz CR oscillator remains active in SLEEP/TIMER modes; Clock Supervisor detects external crystal stop/frequency drift and asserts reset to prevent silent failure. |
Applications
| Industrial Motor Drive | Automotive Body Control Module |
|---|---|
Use Scenario: Closed-loop control of 3-phase BLDC motors in HVAC blowers or pump systems using hall-effect or encoder feedback. IC Role / Device Role / Timing Role: Main controller executing FOC algorithm, generating 6-channel complementary PWM with dead time, sampling current via 12-bit ADC, and reading QPRC position data. Use Value: Integrated QPRC and motor timers eliminate external counter ICs; 1.0 μs ADC conversion enables high-bandwidth current loop sampling at 100 kHz+ switching frequencies. | Use Scenario: Central gateway managing door locks, window lifts, lighting, and climate functions via LIN and UART networks. IC Role / Device Role / Timing Role: LIN 2.1 master node coordinating slave devices, performing diagnostics, and routing messages between CAN and LIN domains. Use Value: Dedicated LIN hardware with break field generation (13–16 bit) and automatic sync detection ensures protocol compliance; 8-channel serial interface supports concurrent LIN, UART, and I²C traffic. |
| Programmable Logic Controller (PLC) I/O Module | USB-Capable Industrial Gateway |
Use Scenario: Modular I/O expansion unit with analog input (0–10 V / 4–20 mA), digital I/O, and RS-485 fieldbus connectivity. IC Role / Device Role / Timing Role: Real-time data acquisition engine with 16-channel ADC scanning, isolated digital I/O control, and Modbus RTU over UART. Use Value: 16-step ADC FIFO and priority conversion allow mixed-signal sampling without CPU polling; external bus interface supports NOR flash for firmware storage and SRAM for configuration backup. | Use Scenario: Edge gateway aggregating sensor data from RS-485, I²C, and SPI devices and uploading to cloud via USB-to-host connection. IC Role / Device Role / Timing Role: USB host controller enumerating CDC ACM or mass storage class devices, while simultaneously managing local peripherals via DMA-accelerated UART/CSIO. Use Value: Dual-role USB with built-in PLL enables plug-and-play host functionality without external clock synthesis; 8-channel DMA handles concurrent USB bulk transfers and peripheral data movement. |
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, 256 KB Flash, 48 KB SRAM, no external bus interface, USB FS device only (no host) | Lacks USB host mode and external memory expansion; stronger DSP capability but less motor timer flexibility | Select when floating-point math or audio processing is required, and external bus/USB host are unnecessary |
| RA6M3GFP | ARM Cortex-M4F core, 120 MHz, 1 MB Flash, 256 KB SRAM, USB FS device/host, no QPRC, no LIN hardware | Higher performance and memory, but missing dedicated LIN and quadrature counter peripherals | Select for high-throughput data logging or HMI applications where LIN/QPRC are not needed |
Compared with STM32F303VCT6 and RA6M3GFP, the CY9AF312LAQN-G-AVE2 uniquely combines USB dual-role capability, hardware LIN 2.1 support, and dual QPRC units-making it optimal for cost-sensitive, motor- and automotive-network-centric designs requiring minimal external components.
Availability
CY9AF312LAQN-G-AVE2 is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, PLC I/O expansion, and USB-capable edge gateways requiring stable component supply across extended product lifecycles.
Supply support for CY9AF312LAQN-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.
The CY9AF312LAQN-G-AVE2 belongs to the FM3 family of 32-bit Arm Cortex-M3 microcontrollers, designed specifically for high-performance, cost-sensitive embedded control applications in motor control, industrial automation, and automotive subsystems.
FAQ
What is the maximum operating frequency and supported voltage range?
The CY9AF312LAQN-G-AVE2 operates at up to 40 MHz with a supply voltage range of 2.7 V to 5.5 V on VCC. USB I/O requires a separate 3.0–3.6 V supply on USBVCC when the USB interface is active; otherwise, USBVCC may be tied to VCC within the full 2.7–5.5 V range. All specifications are validated per Infineon's recommended operating conditions in datasheet Rev. *F.
Does this MCU support USB host functionality, and what peripherals does it require?
Yes, the CY9AF312LAQN-G-AVE2 supports USB 2.0 Full-Speed host mode with automatic device connect/disconnect detection, IN/OUT token handshake, and up to 256-byte packet length. No external PHY or clock generator is needed-the built-in USB PLL synthesizes the 48 MHz USB clock from the main oscillator or internal CR oscillator.
How many ADC channels are available, and what advanced features do they include?
This MCU integrates two 12-bit SAR ADC units (totaling 16 channels), each with 1.0 μs conversion time at 5 V. Key features include priority-based conversion (2-level), scanning mode with 16-step FIFO, overrun/parity/framing error detection, and hardware-triggered sampling synchronized to Base Timer or QPRC events for precise motor current measurement.
Is external memory expansion supported, and what interface options are available?
Yes, the CY9AF312LAQN-G-AVE2 supports external memory expansion via its External Bus Interface with up to 8 chip selects, 8-/16-bit data width, and 25-bit addressing (up to 256 MB address space). It supports SRAM, NOR Flash, and multiplexed address/data buses, along with external RDY signal for asynchronous device handshaking-enabling boot-from-external-memory configurations.
CY9AF312LAQN-G-AVE2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 64-VFQFN Exposed Pad
- Series:
- FM3 MB9A310A
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M3
- Core Size:
- 32-Bit Single-Core
- Speed:
- 40MHz
- Connectivity:
- CSIO, I2C, LINbus, UART/USART, USB
- Peripherals:
- DMA, LVD, POR, PWM, WDT
- Number of I/O:
- 51
- Program Memory Size:
- 128KB (128K 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 9x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY9AF312LAQN-G-AVE2 FAQ
1.How can I place an order for CY9AF312LAQN-G-AVE2 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY9AF312LAQN-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 CY9AF312LAQN-G-AVE2 reliable?
The price and inventory of CY9AF312LAQN-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 CY9AF312LAQN-G-AVE2 is usually 5 days.
3.What payment methods are accepted for CY9AF312LAQN-G-AVE2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY9AF312LAQN-G-AVE2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY9AF312LAQN-G-AVE2?
CY9AF312LAQN-G-AVE2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY9AF312LAQN-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 CY9AF312LAQN-G-AVE2?
For technical support, including CY9AF312LAQN-G-AVE2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY9AF312LAQN-G-AVE2 requirements.
6.How does Aetrix verify that CY9AF312LAQN-G-AVE2 is sourced from the original manufacturer or authorized distributors?
All CY9AF312LAQN-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 CY9AF312LAQN-G-AVE2 meets industry standards.
7.What is the process for return or replacement of CY9AF312LAQN-G-AVE2?
All CY9AF312LAQN-G-AVE2 units undergo pre-shipment inspection (PSI). If there is an issue with CY9AF312LAQN-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 CY9AF312LAQN-G-AVE2 part is unused and in its original packaging.
Return procedure for CY9AF312LAQN-G-AVE2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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