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Home > Products > Integrated Circuits (ICs) > Embedded > Microcontrollers

Infineon Technologies CY9AFA41LBQN-G-AVE2

Name: CY9AFA41LBQN-G-AVE2
Brand: Infineon Technologies
SKU: CY9AFA41LBQN-G-AVE2
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: CY9AFA41LBQN-G-AVE2

Manufacturer:: Infineon Technologies

Category:: Microcontrollers

Package:: 64-VFQFN Exposed Pad

Datasheet:: CY9AFA41LBQN-G-AVE2.pdf

Description:: IC MCU 32BIT 96KB FLASH 64QFN

Quantity:: RFQ Add To RFQ list

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Inventory:4,421

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Product details

Overview

CY9AFA41LBQN-G-AVE2 from Infineon Technologies (formerly Cypress) is a 32-bit ARM® Cortex®-M3 microcontroller with 256 KB dual-bank Flash, 32 KB SRAM (16 KB SRAM0 + 16 KB SRAM1), and integrated LCD controller supporting up to 40×8 segments. It operates at up to 40 MHz, features 24-channel 12-bit ADC (2.0 µs conversion), 8-channel DMA, and six low-power modes including Deep Standby RTC. Used in industrial HMI panels requiring integrated display control and sensor interfacing.

For engineers reviewing the CY9AFA41LBQN-G-AVE2 datasheet, CY9AFA41LBQN-G-AVE2 pinout, CY9AFA41LBQN-G-AVE2 application, or CY9AFA41LBQN-G-AVE2 equivalent, key selection criteria include dual-bank Flash for safe firmware updates, 5 V-tolerant GPIOs on select pins, hardware CRC acceleration (CRC16/CRC32), HDMI-CEC/remote receiver support, and absence of External Bus Interface and Hardware Flow Control (per datasheet Rev. *D, p.2).

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 separates instruction/data access via SRAM0 (I/D-code bus) and system access via SRAM1 (system bus), enabling concurrent CPU and DMA operation without contention.

The peripheral set includes an LCD controller with internal bias resistors and blinking function, eight base timers configurable as PWM/PPG/reload/PWC, and dual watchdogs - one clocked by the 100 kHz CR oscillator for deep-sleep supervision. Clock supervision uses built-in CR oscillators to detect external clock stoppage or frequency anomaly, triggering reset or interrupt.

Key Specifications

Parameter	Value and Actual Design Meaning
CPU Core	ARM Cortex-M3 r2p1, up to 40 MHz - enables deterministic real-time execution with Thumb-2 instruction set and low-latency interrupt handling.
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), separate buses - allows concurrent CPU fetch and DMA transfers without bus arbitration delay.
ADC	24-channel 12-bit SAR, 2.0 µs conversion @ 2.7–3.6 V - delivers high-speed analog sensing for motor control or environmental monitoring.
Low-Power Modes	Six modes including Deep Standby RTC with RAM retention - extends battery life in always-on remote controls or sensor nodes.
LCD Controller	40 SEG × 8 COM, internal bias resistors, VV0–VV4 pins - eliminates external resistor network for segment-based displays in industrial HMIs.
Clock Sources	5 sources: 4–48 MHz main oscillator, 32.768 kHz sub-clock, 4 MHz/100 kHz CR oscillators, Main PLL - enables precise RTC operation and flexible system timing.

Pinout & Package

Package: 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level 3. Pin functions defined per CY9AA40NB Series datasheet Rev. *D Sections 3–4; pin numbering follows standard LQFP convention with corner pin 1 marked.

Pin/Terminal	Circuit Role	Design Meaning
VCC / VSS	Power supply / Ground	Dual VCC domains (core & I/O) with dedicated VSS pairs - ensures stable operation across 1.65–3.6 V supply range.
P00–P07, P10–P17, etc.	General-purpose I/O	Up to 83 GPIOs with per-pin pull-up control and port relocate function - enables flexible PCB layout and peripheral remapping without hardware change.
XTAL1 / XTAL2	Main crystal oscillator input/output	Supports 4–48 MHz external crystal - provides high-accuracy system clock source for timing-critical applications.
OSC32IN / OSC32OUT	32.768 kHz sub-clock crystal interface	Drives RTC and low-power timers independently - maintains timekeeping during deep sleep with minimal current draw.
VLCD / VV0–VV4	LCD bias voltage generation	Internal resistor ladder with dedicated bias pins - simplifies connection to passive segment LCDs without external components.

Key Features

Feature	Design Value
Dual-bank Flash architecture	Enables background firmware update: one bank executes while the other is erased/written - critical for fail-safe field upgrades.
HDMI-CEC/Remote receiver	Integrated 2-channel CEC transceiver with automatic ACK, arbitration loss detection, and 4-byte IR buffer - reduces BOM count in AV control systems.
CRC accelerator	Hardware CCITT CRC16 and IEEE-802.3 CRC32 calculation - offloads integrity checks from CPU, improving throughput in communication stacks.
Port relocate function	Software-configurable assignment of peripheral functions (UART, I²C, etc.) to GPIO pins - increases design reuse across board revisions.
Two independent watchdogs	Hardware watchdog (100 kHz CR clock) remains active in all low-power modes except Deep Standby Stop - guarantees recovery even during extended sleep.

Applications

Industrial HMI Panel

Smart Remote Control

Use Scenario: Embedded display interface in factory automation panels with touchless navigation and real-time status feedback.

IC Role / Device Role / Timing Role: Primary controller managing LCD segment drive, ADC-based sensor polling, and UART-based PLC communication.

Use Value: Integrated 40×8 LCD controller eliminates external driver IC; dual-bank Flash enables seamless firmware patching without system downtime.

Use Scenario: Battery-powered universal remote supporting HDMI-CEC and infrared protocols for home theater systems.

IC Role / Device Role / Timing Role: Central processing unit executing CEC protocol stack, IR demodulation, and RTC-based wake scheduling.

Use Value: Built-in CEC transmitter/receiver and 4-byte IR buffer reduce external logic; Deep Standby RTC mode draws <1 µA while maintaining accurate time.

Energy Monitoring Node

Medical Sensor Hub

Use Scenario: Compact wall-mounted electricity meter with voltage/current sensing, LCD display, and serial data logging.

IC Role / Device Role / Timing Role: Data acquisition controller performing 24-channel ADC sampling, CRC-protected data storage, and LCD refresh.

Use Value: 2.0 µs ADC conversion and hardware CRC32 accelerate measurement-to-display pipeline; 32 KB SRAM buffers multi-cycle readings.

Use Scenario: Portable patient monitor aggregating temperature, pulse oximetry, and ECG signals with local display and alert generation.

IC Role / Device Role / Timing Role: Real-time signal processor running low-latency filtering algorithms and driving segmented medical-grade LCD.

Use Value: 16-level NVIC priority supports time-critical interrupt handling for arrhythmia detection; 5 V-tolerant GPIOs interface directly with legacy analog front-ends.

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
STM32F103VCT6	72 MHz Cortex-M3, 256 KB Flash, no integrated LCD controller or HDMI-CEC; requires external bias for segment LCDs.	Lacks native LCD drive and CEC support - needs companion ICs for HMI or AV control use cases.	Select when higher CPU speed and broader ecosystem support outweigh integrated peripherals.
RP2040 (Raspberry Pi)	Dual-core ARM Cortex-M0+, 2 MB Flash (external), no LCD controller or CEC; USB-based debug instead of SWJ-DP.	No hardware RTC or sub-clock domain - unsuitable for battery-backed timekeeping or ultra-low-power standby.	Prefer for cost-sensitive consumer devices where USB mass storage programming and PIO flexibility are prioritized.

Compared with STM32F103VCT6 and RP2040, CY9AFA41LBQN-G-AVE2 uniquely integrates LCD bias generation, HDMI-CEC transceiver, and dual-bank Flash - reducing component count and power in display-centric embedded controllers with field-upgrade requirements.

Availability

CY9AFA41LBQN-G-AVE2 is available at Aetrix Electronics and suitable for industrial HMI panels, smart remote controls, energy monitoring nodes, and medical sensor hubs requiring stable component supply, long-term lifecycle support, and qualified automotive-grade traceability.

Supply support for CY9AFA41LBQN-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 AG is a German semiconductor manufacturer specializing in power management, automotive, and industrial control ICs, with global R&D and manufacturing infrastructure.

This device belongs to the FM3 family of general-purpose 32-bit microcontrollers designed specifically for cost-sensitive, low-power embedded applications requiring integrated analog peripherals, display interfaces, and robust firmware update capability.

FAQ

Does CY9AFA41LBQN-G-AVE2 support external memory expansion?

No. Per datasheet Rev. *D page 2, CY9AFA41LBQN-G-AVE2 does not support the External Bus Interface - unlike some other CY9AA40NB variants (e.g., FA43LB). It relies solely on on-chip Flash and SRAM for program and data storage.

What is the maximum operating voltage for the LCD bias pins (VV0–VV4)?

The VV0–VV4 pins support up to 5.5 V when used with external bias supplies, but the internal LCD driver operates within the core VCC range of 2.2–3.6 V (required when LCDC is active). Internal bias generation is limited to VCC-dependent voltage division.

Is hardware flow control available on any UART channel?

No. Datasheet Rev. *D explicitly states that CY9AFA41LBQN-G-AVE2 does not support hardware flow control (CTS/RTS), even on UART channel 4 where it is implemented in other family members. Software handshaking must be used instead.

Can the 41-bit Unique ID be read during normal operation?

Yes. The 41-bit device-unique identifier is accessible via the System Control Block (SCB) register map at address 0x400FE0C0–0x400FE0C4 and can be read in any CPU mode without special unlock sequences or debug access.

CY9AFA41LBQN-G-AVE2 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Package/Case:: 64-VFQFN Exposed Pad

Series:: FM3 MB9AA40NB

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

Peripherals:: DMA, LCD, 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:

CY9AFA41LBQN-G-AVE2 FAQ

1.How can I place an order for CY9AFA41LBQN-G-AVE2 through Aetrix?

Please submit a Request for Quotation (RFQ) for CY9AFA41LBQN-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 CY9AFA41LBQN-G-AVE2 reliable?

The price and inventory of CY9AFA41LBQN-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 CY9AFA41LBQN-G-AVE2 is usually 5 days.

3.What payment methods are accepted for CY9AFA41LBQN-G-AVE2?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY9AFA41LBQN-G-AVE2 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for CY9AFA41LBQN-G-AVE2?

CY9AFA41LBQN-G-AVE2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your CY9AFA41LBQN-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 CY9AFA41LBQN-G-AVE2?

For technical support, including CY9AFA41LBQN-G-AVE2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY9AFA41LBQN-G-AVE2 requirements.

6.How does Aetrix verify that CY9AFA41LBQN-G-AVE2 is sourced from the original manufacturer or authorized distributors?

All CY9AFA41LBQN-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 CY9AFA41LBQN-G-AVE2 meets industry standards.

7.What is the process for return or replacement of CY9AFA41LBQN-G-AVE2?

All CY9AFA41LBQN-G-AVE2 units undergo pre-shipment inspection (PSI). If there is an issue with CY9AFA41LBQN-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 CY9AFA41LBQN-G-AVE2 part is unused and in its original packaging.

Return procedure for CY9AFA41LBQN-G-AVE2:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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