Infineon Technologies CY9AF112LAQN-G-AVE2

Overview

CY9AF112LAQN-G-AVE2 from Infineon Technologies (formerly Cypress) is a 32-bit Arm® Cortex®-M3 microcontroller with 128 KB on-chip Flash, 16 KB SRAM, and integrated motor control peripherals including 8-channel Base Timers, 2-unit Multi-function Timers, and 12-channel 12-bit ADC. It operates up to 40 MHz, supports 2.7–5.5 V supply, and targets industrial motor drives and embedded control systems requiring real-time PWM, LIN/UART/I²C communication, and quadrature position sensing.

For engineers reviewing the CY9AF112LAQN-G-AVE2 datasheet, CY9AF112LAQN-G-AVE2 pinout, CY9AF112LAQN-G-AVE2 application, or CY9AF112LAQN-G-AVE2 equivalent, key selection criteria include its 100-pin LQFP package, dual watchdog (HW/SW), CRC accelerator for data integrity, external bus interface (25-bit address, 8-/16-bit data), and QPRC support for encoder-based motion control.

Technical Context

The CY9AF112LAQN-G-AVE2 implements a full 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 SRAM banks (SRAM0/SRAM1) mapped to I-code/D-code and system buses respectively, enabling concurrent CPU and DMA access without contention.

Peripheral integration centers on deterministic real-time control: three 12-bit ADC units (12 total channels, 1.0 µs conversion @5 V), eight Base Timer channels configurable as PWM/PPG/reload timers, and two QPRC units with 16-bit position/revolution counters and programmable A/B/Z input edge detection - all synchronized via hardware triggers and DMA.

Key Specifications

Pinout & Package

LQFP-100 package (JEDEC MS-026AC, 14 × 14 mm body, 0.65 mm lead pitch), thermally enhanced with exposed thermal pad (EP). Pin 1 marked by dot; pins numbered counterclockwise from top-left corner.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar Arm Cortex-M3 microcontroller applications.

Compared with STM32F103VCT6 and RA4M1, the CY9AF112LAQN-G-AVE2 uniquely integrates QPRC, LIN 2.1, and external bus in a 100-pin LQFP - delivering lower system-level BOM cost and deterministic timing for motor control and industrial networking where peripheral offload matters.

Availability

CY9AF112LAQN-G-AVE2 is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, smart power meters, and factory automation I/O controllers requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for CY9AF112LAQN-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 MCUs, and industrial control solutions, with global R&D and manufacturing infrastructure.

The CY9A110A/CY9A110 Series - now part of Infineon's FM3 portfolio - was designed specifically for cost-sensitive, high-reliability embedded control in motor drives, building automation, and industrial IoT edge nodes requiring real-time peripherals and wide-voltage operation.

FAQ

What is the maximum operating frequency and supported voltage range for CY9AF112LAQN-G-AVE2?

The CY9AF112LAQN-G-AVE2 operates at up to 40 MHz with a supply voltage range of 2.7 V to 5.5 V. This wide voltage range supports direct connection to 3.3 V and 5 V logic systems without level shifters, and enables robust operation in battery-powered or unregulated industrial power rails. The internal PLL derives the system clock from external or built-in oscillators, maintaining timing accuracy across the full voltage and temperature range.

Does CY9AF112LAQN-G-AVE2 support hardware LIN protocol implementation?

Yes, it includes a dedicated LIN 2.1 protocol engine with master/slave mode support, programmable break field (13–16 bits) and delimiter (1–4 bits), and automatic error detection (parity, framing, overrun). Unlike software-based LIN stacks, this hardware block handles timing-critical frame generation and synchronization independently of CPU load, ensuring compliance with LIN Consortium timing tolerances even under heavy interrupt load.

How many ADC channels and what resolution does CY9AF112LAQN-G-AVE2 provide?

The device integrates three 12-bit successive-approximation ADC units totaling 12 input channels. Conversion time is 1.0 µs at 5 V supply, with priority-based and scanning modes supported. Each unit includes dedicated FIFO (16-step for scan, 4-step for priority) and hardware-triggered start capability - enabling precise, jitter-free sampling synchronized to PWM events for motor current measurement.

Is external memory expansion supported, and what are the interface limits?

Yes, the external bus interface supports SRAM and NOR Flash devices with up to 8 chip selects, 25-bit addressing (max 32 MB per CS), and 8-/16-bit data width. It supports address/data multiplexing and external RDY handshake for slow peripherals. This allows direct attachment of external program memory or data buffers without requiring an external memory controller - critical for applications needing >128 KB code space or real-time data logging.