Infineon Technologies CY9AF111KQN-G-AVE2

Overview

CY9AF111KQN-G-AVE2 from Infineon Technologies (formerly Cypress) is a 32-bit ARM® Cortex®-M3 microcontroller designed for motor control and embedded real-time applications. It operates at up to 40 MHz, integrates 128 KB MainFlash + 32 KB WorkFlash, 16 KB SRAM (8 KB SRAM0 + 8 KB SRAM1), and features dual 12-bit ADCs with 1.0 μs conversion time, LIN 2.1 support, and QPRC for encoder position sensing - deployed in industrial motor drives and HVAC blower control systems.

For engineers reviewing the CY9AF111KQN-G-AVE2 datasheet, CY9AF111KQN-G-AVE2 pinout, CY9AF111KQN-G-AVE2 application, or CY9AF111KQN-G-AVE2 equivalent, key selection criteria include its dual Flash architecture with code protection, 36 fast GPIOs (some 5 V tolerant), integrated motor control peripherals (PPG, DTIF, A/D activation), and RTC with leap-year support - all within a 64-pin LQFP package rated for 2.7–5.5 V operation.

Technical Context

The CY9AF111KQN-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 scheduling. Its memory subsystem includes two independent Flash banks (MainFlash and WorkFlash) enabling secure firmware updates without runtime interruption, and dual-bus-connected SRAM (SRAM0 on I/D-code bus, SRAM1 on system bus) for concurrent CPU/DMA access.

Peripheral integration centers on deterministic real-time control: Base Timers support 16-/32-bit PWM/PPG/PWC modes; Multi-function Timers provide input capture, output compare, and A/D activation triggers; QPRC delivers 16-bit position/revolution counting with configurable A/B/Z edge detection; and LIN 2.1 transceivers operate in master/slave mode with programmable break field (13–16 bit) and delimiter (1–4 bit).

Key Specifications

Pinout & Package

64-pin LQFP package (10 × 10 mm, 0.5 mm pitch) with exposed thermal pad; RoHS-compliant, lead-free finish; operating ambient temperature range: –40 °C to +85 °C.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 32-bit motor control microcontroller applications.

Compared with STM32F303K8T6 and RL78/F13, CY9AF111KQN-G-AVE2 uniquely combines dual Flash security, hardware QPRC, LIN 2.1 PHY, and motor-specific timers in a single 64-pin LQFP - making it optimal for safety-aware, encoder-based motor control without external components.

Availability

CY9AF111KQN-G-AVE2 is available at Aetrix Electronics and suitable for industrial motor drives, HVAC blower control, smart power metering, and industrial gateway edge nodes requiring stable component supply, long-term lifecycle support, and qualified automotive-grade reliability.

Supply support for CY9AF111KQN-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 manufacturer specializing in power management, automotive MCUs, and industrial control solutions, with global R&D and manufacturing infrastructure.

CY9AF111KQN-G-AVE2 belongs to the FM3 family of high-integration 32-bit ARM Cortex-M3 microcontrollers, designed specifically for cost-sensitive, real-time embedded applications demanding motor control, LIN communication, and robust low-power operation.

FAQ

What is the maximum operating frequency and voltage range for CY9AF111KQN-G-AVE2?

The CY9AF111KQN-G-AVE2 operates at up to 40 MHz with a supply voltage range of 2.7 V to 5.5 V. This wide VCC range supports direct interface with both 3.3 V and 5 V peripheral logic, and enables use in legacy industrial systems without level-shifting. The 40 MHz limit is guaranteed across the full temperature range (–40 °C to +85 °C) under recommended operating conditions per datasheet Section 12.2.

Does CY9AF111KQN-G-AVE2 include hardware LIN protocol support?

Yes - the device integrates a full LIN 2.1-compliant transceiver with master/slave mode support, programmable break field (13–16 bit), break delimiter (1–4 bit), and hardware error detection (framing, parity, overrun). No external LIN transceiver is required; LIN functionality is implemented directly in the CSIO peripheral block (Channel 5), reducing BOM count and PCB area.

How does the dual Flash architecture improve firmware update safety?

The CY9AF111KQN-G-AVE2 separates code storage into MainFlash (128 KB) and WorkFlash (32 KB), both featuring independent security lock bits. During OTA updates, new firmware writes to WorkFlash while the system executes from MainFlash; upon successful verification, the boot vector redirects to WorkFlash. This eliminates risk of bricking during power loss or corruption, as confirmed in FM3 Family Peripheral Manual TYPE5 documentation.

Is the QPRC module capable of handling quadrature signals from incremental encoders?

Yes - the Quadrature Position/Revolution Counter (QPRC) accepts AIN, BIN, and ZIN inputs with fully configurable edge detection (rising/falling/both), supports 16-bit position counting and 16-bit revolution counting, and includes two 16-bit compare registers for index pulse synchronization. It operates independently of CPU load and is validated for use with standard 500–2000 PPR industrial encoders per datasheet Section 12.4.11 timing specs.