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

Infineon Technologies CY9AFA44LBQN-G-AVE2

Name: CY9AFA44LBQN-G-AVE2
Brand: Infineon Technologies
SKU: CY9AFA44LBQN-G-AVE2
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: CY9AFA44LBQN-G-AVE2

Manufacturer:: Infineon Technologies

Category:: Microcontrollers

Package:: 64-VFQFN Exposed Pad

Datasheet:: CY9AFA44LBQN-G-AVE2.pdf

Description:: IC MCU 32BIT 288KB FLASH 64QFN

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Product details

Overview

CY9AFA44LBQN-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), 40 MHz max CPU frequency, and integrated LCD controller supporting up to 40 SEG × 8 COM. It targets low-power embedded control in industrial HMI, smart metering, and appliance panels.

For engineers reviewing the CY9AFA44LBQN-G-AVE2 datasheet, CY9AFA44LBQN-G-AVE2 pinout, CY9AFA44LBQN-G-AVE2 application, or CY9AFA44LBQN-G-AVE2 equivalent, key selection criteria include dual-bank Flash for seamless firmware updates, 12-bit ADC with 2.0 μs conversion time, RTC with leap-year support, and 100-pin LQFP package with 83 GPIOs including 5 V-tolerant pins.

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 independent I-code/D-code buses for SRAM0 and system bus for SRAM1, enabling concurrent CPU and DMA access.

The peripheral set includes eight base timers (configurable as PWM/PPG/reload/PWC), dual 32-/16-bit down counters, HDMI-CEC transceiver with automatic ACK and header block transmission, and CRC accelerator supporting CCITT CRC16 and IEEE-802.3 CRC32 for data integrity verification.

Key Specifications

Parameter	Value and Actual Design Meaning
CPU Core	ARM Cortex-M3 r2p1, 40 MHz max - enables deterministic real-time control with Thumb-2 instruction set and hardware divide.
Flash Memory	256 KB dual-bank (240 KB upper + 16 KB lower), 0 wait-state - supports background read while erasing/writing one bank.
SRAM	32 KB total (16 KB SRAM0 on I/D bus + 16 KB SRAM1 on system bus) - allows parallel CPU and DMA access without contention.
ADC	12-bit SAR, 24 channels, 2.0 μs conversion @ 2.7–3.6 V - delivers high-speed analog sensing for motor control or sensor fusion.
LCDC	40 SEG × 8 COM, internal bias resistors, VV0–VV4 pins - drives segment-based LCDs without external voltage dividers.
Low-Power Modes	Six modes including Deep Standby RTC/Stop with RAM retention options - extends battery life in always-on metering or remote controls.
Package	100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch) - provides 83 GPIOs with port relocation and select 5 V-tolerant inputs.

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 & I/O); decoupling required per datasheet Section 12.3.2.
XTAL / EXTAL	Main clock oscillator input/output	Supports 4–48 MHz crystal; used for PLL input or direct system clock source.
RTCXTAL / RTCXTAL	Sub-clock oscillator input/output	32.768 kHz crystal connection for RTC and low-power wake-up timing.
P00–P57, P60–P67, P70–P77, P80–P87, P90–P97	General-purpose I/O ports	83 total GPIOs; port relocate function allows flexible peripheral mapping; some pins 5 V tolerant.
SEG0–SEG39, COM0–COM7	LCD segment/com common drivers	Direct drive for 40×8 segment LCD; internal resistor ladder eliminates external bias network.

Key Features

Feature	Design Value
Dual-bank Flash architecture	Enables over-the-air firmware updates without halting application execution - critical for field-deployed industrial controllers.
Hardware CRC accelerator	Offloads CCITT CRC16 and IEEE-802.3 CRC32 computation - reduces CPU load by >90% during communication frame validation.
HDMI-CEC transceiver	Integrated CEC protocol engine with auto-header, ACK, EOM, and arbitration loss detection - eliminates external CEC PHY in AV equipment.
Port relocation	Runtime-configurable peripheral pin assignment - simplifies PCB layout and enables single-hardware design across multiple product variants.
Two watchdog timers	Independent hardware (CR-oscillator clocked) and software watchdogs - ensures fail-safe recovery even during deep sleep or clock failure.

Applications

Industrial HMI Panels

Smart Energy Meters

Use Scenario: Local operator interface on PLC-mounted display units with button feedback and real-time status visualization.

IC Role / Device Role / Timing Role: Primary controller managing LCD refresh, touch/button scanning, serial comms (UART/I²C), and RTC-backed logging.

Use Value: Dual-bank Flash enables secure firmware patching during operation; 40×8 LCDC drives custom segment displays without external bias components.

Use Scenario: Residential electricity meter with tamper detection, tariff switching, and local display of kWh consumption and time-of-use data.

IC Role / Device Role / Timing Role: System-on-chip handling metrology interface (via ADC), RTC calendar, secure storage (Flash encryption), and optical/IR communication.

Use Value: RTC with leap-year support ensures accurate billing intervals; LVD1/LVD2 provide early warning and auto-reset on brownout conditions.

Home Appliance Control

Remote-Controlled Consumer Devices

Use Scenario: Washing machine main board controlling motor drivers, temperature sensors, water valves, and LED/LCD user interface.

IC Role / Device Role / Timing Role: Real-time motion control coordinator using base timers for PWM generation and ADC for current/voltage monitoring.

Use Value: Eight configurable base timers support simultaneous motor phase control and sensor sampling; 6 low-power modes extend standby battery life.

Use Scenario: Set-top box or soundbar receiving IR/CEC commands and driving segmented display for channel/volume status.

IC Role / Device Role / Timing Role: HDMI-CEC endpoint with built-in transmitter/receiver logic and remote control decoder (4-byte buffer + repeat code detection).

Use Value: Eliminates discrete CEC transceiver IC; internal 32.768 kHz RTC enables precise wake-from-sleep on scheduled CEC polling.

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 LCDC or HDMI-CEC; requires external LCD bias and CEC PHY.	Lacks native segment LCD and CEC support - needs additional BOM components for HMI/AV use cases.	Select when higher CPU performance is prioritized over integrated peripherals and cost-sensitive BOM consolidation is not required.
RP2040	Dual-core ARM Cortex-M0+, 2 MB Flash, no RTC, no LCDC, no CEC; USB-host capable but lacks industrial-grade LVD/CSV.	No RTC calendar, no segment LCD driver, no CEC - unsuitable for metering or AV control without significant external circuitry.	Prefer for USB-centric, cost-optimized consumer projects where industrial reliability and integrated HMI peripherals are secondary.

Compared with STM32F103VCT6 and RP2040, CY9AFA44LBQN-G-AVE2 uniquely integrates LCD controller, HDMI-CEC transceiver, and RTC with leap-year support - reducing component count and qualification effort in appliance and metering designs requiring certified, low-power embedded control.

Availability

CY9AFA44LBQN-G-AVE2 is available at Aetrix Electronics and suitable for industrial HMI panels, smart energy meters, home appliance control systems, and remote-controlled consumer devices requiring stable component supply and long-term lifecycle support.

Supply support for CY9AFA44LBQN-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 industrial control solutions, with global manufacturing and quality certification (IATF 16949, ISO 9001).

CY9AFA44LBQN-G-AVE2 belongs to the FM3 family of 32-bit ARM Cortex-M3 microcontrollers, designed specifically for cost-sensitive, low-power embedded applications requiring integrated human-machine interface (LCD/CEC) and robust real-time control capabilities.

FAQ

Does CY9AFA44LBQN-G-AVE2 support external memory expansion?

No. Unlike earlier CY9AA40NB series variants (e.g., CY9AFA41LB), this part explicitly omits External Bus Interface functionality per datasheet Rev. *D, Page 2. It relies solely on on-chip Flash and SRAM for program and data storage.

What is the maximum operating voltage range for the LCDC function?

The LCDC requires VCC = 2.2 V to 3.6 V, as specified in the "Recommended Operating Conditions" section (Page 72). Operation below 2.2 V disables LCD drive capability, though core logic remains functional at 1.65 V.

Is hardware flow control supported on UART channels?

No. Hardware flow control (CTS/RTS) is explicitly excluded for CY9AFA44LBQN-G-AVE2 per datasheet Rev. *D, Page 2 footnote. Only software-based flow control (XON/XOFF) or manual handshaking via GPIO is possible.

How many priority levels does the NVIC support?

The NVIC supports 16 programmable priority levels, with 1 non-maskable interrupt (NMI) and 48 configurable peripheral interrupt lines. Priority grouping is configurable via AIRCR register, enabling fine-grained interrupt preemption control in real-time tasks.

CY9AFA44LBQN-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:: 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:

CY9AFA44LBQN-G-AVE2 FAQ

1.How can I place an order for CY9AFA44LBQN-G-AVE2 through Aetrix?

Please submit a Request for Quotation (RFQ) for CY9AFA44LBQN-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 CY9AFA44LBQN-G-AVE2 reliable?

The price and inventory of CY9AFA44LBQN-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 CY9AFA44LBQN-G-AVE2 is usually 5 days.

3.What payment methods are accepted for CY9AFA44LBQN-G-AVE2?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY9AFA44LBQN-G-AVE2 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for CY9AFA44LBQN-G-AVE2?

CY9AFA44LBQN-G-AVE2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your CY9AFA44LBQN-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 CY9AFA44LBQN-G-AVE2?

For technical support, including CY9AFA44LBQN-G-AVE2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY9AFA44LBQN-G-AVE2 requirements.

6.How does Aetrix verify that CY9AFA44LBQN-G-AVE2 is sourced from the original manufacturer or authorized distributors?

All CY9AFA44LBQN-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 CY9AFA44LBQN-G-AVE2 meets industry standards.

7.What is the process for return or replacement of CY9AFA44LBQN-G-AVE2?

All CY9AFA44LBQN-G-AVE2 units undergo pre-shipment inspection (PSI). If there is an issue with CY9AFA44LBQN-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 CY9AFA44LBQN-G-AVE2 part is unused and in its original packaging.

Return procedure for CY9AFA44LBQN-G-AVE2:

1.Submit a request within 90 days.

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

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