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Infineon Technologies CY9AFB44LBQN-G-AVE2
- Part No.:
- CY9AFB44LBQN-G-AVE2
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 64-VFQFN Exposed Pad
- Datasheet:
-
CY9AFB44LBQN-G-AVE2.pdf
- Description:
- IC MCU 32BIT 288KB FLASH 64QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,687
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Product details
Overview
CY9AFB44LBQN-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 integrated LCD controller supporting up to 40×8 segment-combination displays. It operates at up to 40 MHz, supports six low-power modes including Deep Standby RTC, and targets embedded control in industrial HMIs and portable instrumentation.
For engineers reviewing the CY9AFB44LBQN-G-AVE2 datasheet, CY9AFB44LBQN-G-AVE2 pinout, CY9AFB44LBQN-G-AVE2 application, or CY9AFB44LBQN-G-AVE2 equivalent, key selection criteria include dual-bank Flash for seamless firmware updates, USB device/host dual-role capability, 24-channel 12-bit ADC with 2.0 µs conversion time, and 83 GPIOs with port relocation in 100-pin LQFP package.
Technical Context
This MCU implements the ARM Cortex-M3 r2p1 core with NVIC supporting 48 peripheral interrupts and 16 priority levels, plus a 24-bit SysTick timer for RTOS scheduling. Its memory subsystem features dual-operation Flash enabling concurrent read/erase/write across upper (240 KB) and lower (16 KB) banks, and two independent SRAM blocks optimized for instruction/data (SRAM0) and system bus (SRAM1) access.
The peripheral set includes an 8-channel DMA controller with 32-bit addressing, HDMI-CEC/remote receiver (2 channels), real-time clock with leap-year support, and CRC accelerator for CCITT CRC16 and IEEE-802.3 CRC32. Clock management integrates five sources - two external oscillators, two CR oscillators (4 MHz/100 kHz), and Main PLL - with Clock Supervision (CSV) for external clock failure detection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | ARM Cortex-M3 r2p1, 40 MHz max operation - enables deterministic real-time control with low-latency interrupt handling. |
| Flash Memory | 256 KB dual-bank (240 KB upper + 16 KB lower), 0-wait-state read - supports background firmware update without halting execution. |
| SRAM | 32 KB total (16 KB SRAM0 + 16 KB SRAM1), split bus architecture - isolates instruction/data traffic from system peripherals to reduce contention. |
| USB Interface | Full-Speed device/host dual-mode, 6 endpoints (EP0–EP5), EP1 double-buffered at 256 bytes - enables embedded host for USB peripherals and device mode for PC connectivity. |
| ADC | 24-channel 12-bit SAR, 2.0 µs conversion @ 2.7–3.6 V - meets timing requirements for fast analog sensing in motor control or sensor fusion. |
| Low-Power Modes | Six modes including Deep Standby RTC with RAM retention - extends battery life in always-on monitoring applications while preserving context. |
| Package | 100-pin LQFP (14 × 14 mm, 0.5 mm pitch) - provides 83 GPIOs with 5 V-tolerant capability on selected pins for mixed-voltage 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 |
|---|---|---|
| VCC / VSS | Power supply / Ground | Dual VCC domains (core/analog) with dedicated VSS pairs - ensures stable operation across 1.65–3.6 V supply range and noise isolation. |
| XTAL / EXTAL | Main clock input/output | 4–48 MHz crystal oscillator interface - provides precise timing source for CPU, USB PLL, and peripherals. |
| OSC32K / OSC32KIN | Sub-clock input | 32.768 kHz crystal connection - enables accurate RTC timekeeping and wake-up from deep sleep modes. |
| USB_DP / USB_DM | USB differential data lines | Full-Speed USB 2.0 physical layer interface - requires no external transceiver for device or host operation. |
| SEG0–SEG39 / COM0–COM7 | LCD segment/com drive outputs | Direct drive for 40×8 LCD panels with internal bias resistor network - eliminates external LCD bias components. |
| P00–P57, P60–P67, P70–P77, P80–P87, P90–P97 | General-purpose I/O | 83 configurable GPIOs with port relocation, pull-up control, and direct read capability - simplifies PCB routing and pin assignment flexibility. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-bank Flash memory | Enables over-the-air firmware updates with zero downtime by erasing/writing one bank while executing from the other. |
| USB device/host dual-mode | Reduces BOM cost and board space by eliminating need for separate USB host controller or external PHY in portable HMI designs. |
| Integrated LCD controller (40×8) | Drives segment-based displays without external driver ICs, lowering system cost and power in industrial panel meters. |
| 8-channel DMA with 32-bit addressing | Offloads CPU from high-bandwidth data movement (e.g., ADC sampling, USB transfers), improving real-time responsiveness. |
| HDMI-CEC/Remote receiver (2 ch) | Supports consumer electronics remote control integration and HDMI ecosystem interoperability without external decode logic. |
Applications
| Industrial HMI Panel | Portable Test Instrument |
|---|---|
Use Scenario: Compact front-panel display with touch buttons, real-time sensor readouts, and USB configuration interface. IC Role / Device Role / Timing Role: Primary system controller managing LCD refresh, ADC acquisition, USB communication, and button debouncing. Use Value: Dual-bank Flash allows field firmware upgrades without interrupting instrument operation; integrated LCDC reduces component count by 3+ external drivers. | Use Scenario: Battery-powered multimeter or oscilloscope probe with LCD display, analog front-end, and PC data logging via USB. IC Role / Device Role / Timing Role: Central processing unit handling 24-channel ADC sampling, LCD rendering, USB bulk transfers, and low-power state management. Use Value: Six low-power modes (including Deep Standby RTC) extend battery life beyond 100 hours; 2.0 µs ADC conversion supports 500 kSPS effective sampling. |
| Smart Energy Meter | Building Automation Controller |
Use Scenario: DIN-rail mounted electricity meter with pulse counting, tamper detection, LCD display, and optical/USB communication ports. IC Role / Device Role / Timing Role: Main controller executing metrology algorithms, driving LCD, managing secure firmware updates, and handling time-stamped event logging. Use Value: RTC with leap-year support and alarm interrupts ensures accurate billing interval tracking; CRC32 accelerator validates firmware integrity during OTA updates. | Use Scenario: HVAC zone controller with temperature/humidity sensors, relay outputs, LCD status display, and RS-485/USB connectivity. IC Role / Device Role / Timing Role: Embedded controller coordinating sensor polling, PID loop execution, display updates, and communication protocol stacks (Modbus over UART/USB). Use Value: Port relocation allows flexible pin mapping for varying sensor/actuator layouts; hardware watchdog (CR-clocked) ensures recovery from brown-out events in unattended installations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32F103VCT6 | ARM Cortex-M3, 256 KB Flash, 48 KB SRAM, no integrated LCDC or HDMI-CEC; USB device-only. | Lacks native LCD and remote control interfaces - requires external drivers and decode logic for HMI functions. | Select when USB host capability and integrated display control are not required, and higher SRAM is prioritized. |
| RA4M1 (R7FA4M1AB3CFM) | ARM Cortex-M4F, 256 KB Flash, 32 KB SRAM, no LCDC, USB device-only, includes TrustZone security. | No LCD or CEC support; stronger cryptographic acceleration but no dual-bank Flash for seamless updates. | Prefer for secure boot and encrypted communication where display integration is handled externally. |
Compared with STM32F103VCT6 and RA4M1, CY9AFB44LBQN-G-AVE2 uniquely combines dual-bank Flash, USB device/host, and 40×8 LCDC in a single 100-pin LQFP package - delivering lowest BOM cost and smallest footprint for cost-sensitive, display-intensive embedded controllers.
Availability
CY9AFB44LBQN-G-AVE2 is available at Aetrix Electronics and suitable for industrial HMI panels, portable test instruments, smart energy meters, and building automation controllers requiring stable component supply, long-term lifecycle support, and qualified automotive-grade traceability.
Supply support for CY9AFB44LBQN-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 leader specializing in power management, automotive MCUs, and security solutions, with global manufacturing and R&D infrastructure.
CY9AFB44LBQN-G-AVE2 belongs to the FM3 family of 32-bit ARM Cortex-M3 microcontrollers, designed specifically for cost-optimized, low-power embedded control in industrial human-machine interfaces and portable instrumentation.
FAQ
What is the maximum operating frequency and supported voltage range for CY9AFB44LBQN-G-AVE2?
The CY9AFB44LBQN-G-AVE2 operates at up to 40 MHz with a supply voltage range of 1.65 V to 3.6 V. When USB functionality is enabled, VCC must be maintained between 3.0 V and 3.6 V; for LCD operation, the valid range expands to 2.2 V–3.6 V. These ranges are validated per Infineon's DC characteristics table in Rev. *D datasheet, page 68.
Does CY9AFB44LBQN-G-AVE2 support USB host mode, and what peripheral types can it enumerate?
Yes, it supports USB 2.0 Full-Speed and Low-Speed host mode with automatic device connect/disconnect detection, IN/OUT token handshake handling, and up to 256-byte packet length. It enumerates standard class devices including HID keyboards/mice, CDC serial adapters, and mass storage devices - confirmed in Section 5.3.2 of the FM3 Peripheral Manual and datasheet page 18.
How many GPIO pins are available, and do they support 5 V tolerance?
The device provides up to 83 general-purpose I/O pins in its 100-pin LQFP package. Specific pins - including P00–P07, P10–P17, P20–P27, P30–P37, P40–P47, and P50–P57 - are 5 V tolerant when configured as inputs, as documented in Section 5 "I/O Circuit Type" (page 41) and Pin Assignment tables (pages 8–14) of the datasheet.
What low-power modes are implemented, and which retain RAM content in Deep Standby?
Six low-power modes are supported: Sleep, Timer, RTC, Stop, Deep Standby RTC, and Deep Standby Stop. Both Deep Standby RTC and Deep Standby Stop offer user-selectable RAM retention - enabling full context preservation during ultra-low-power states. This behavior is controlled via dedicated register bits (DSBCTRL.RAMON) and verified in Section 17.3 of the FM3 Family Peripheral Manual.
CY9AFB44LBQN-G-AVE2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 64-VFQFN Exposed Pad
- Series:
- FM3 MB9AB40NB
- 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, LCD, 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:
CY9AFB44LBQN-G-AVE2 FAQ
1.How can I place an order for CY9AFB44LBQN-G-AVE2 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY9AFB44LBQN-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 CY9AFB44LBQN-G-AVE2 reliable?
The price and inventory of CY9AFB44LBQN-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 CY9AFB44LBQN-G-AVE2 is usually 5 days.
3.What payment methods are accepted for CY9AFB44LBQN-G-AVE2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY9AFB44LBQN-G-AVE2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY9AFB44LBQN-G-AVE2?
CY9AFB44LBQN-G-AVE2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY9AFB44LBQN-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 CY9AFB44LBQN-G-AVE2?
For technical support, including CY9AFB44LBQN-G-AVE2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY9AFB44LBQN-G-AVE2 requirements.
6.How does Aetrix verify that CY9AFB44LBQN-G-AVE2 is sourced from the original manufacturer or authorized distributors?
All CY9AFB44LBQN-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 CY9AFB44LBQN-G-AVE2 meets industry standards.
7.What is the process for return or replacement of CY9AFB44LBQN-G-AVE2?
All CY9AFB44LBQN-G-AVE2 units undergo pre-shipment inspection (PSI). If there is an issue with CY9AFB44LBQN-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 CY9AFB44LBQN-G-AVE2 part is unused and in its original packaging.
Return procedure for CY9AFB44LBQN-G-AVE2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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