Infineon Technologies CY9AF111LAQN-G-AVE2

Overview

CY9AF111LAQN-G-AVE2 from Infineon Technologies (formerly Cypress) is a 32-bit Arm® Cortex®-M3 microcontroller with 64 KB on-chip Flash, 16 KB SRAM, 40 MHz max CPU frequency, 51 GPIO pins, and integrated motor control peripherals including 8-channel Base Timers, dual A/D converters (9 channels total), and LIN 2.1/UART/I²C/CSIO serial interfaces. It targets cost-sensitive industrial motor drives and embedded control systems requiring deterministic real-time response.

For engineers reviewing the CY9AF111LAQN-G-AVE2 datasheet, CY9AF111LAQN-G-AVE2 pinout, CY9AF111LAQN-G-AVE2 application, or CY9AF111LAQN-G-AVE2 equivalent, key selection criteria include its LQFP-100 package, 2.7–5.5 V supply range, hardware watchdog + software watchdog, CRC accelerator support for CCITT CRC16/IEEE-802.3 CRC32, and absence of External Bus Interface - critical for compact, low-pin-count motor control designs.

Technical Context

The CY9AF111LAQN-G-AVE2 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 includes two independent SRAM banks (SRAM0/SRAM1) mapped to I-code/D-code and system buses respectively, enabling concurrent instruction fetch and data access.

Peripheral integration centers on deterministic timing: eight Base Timers support PWM, PPG, reload, and PWC modes; two Multi-function Timer units provide input capture, output compare, A/D activation, and waveform generation; and dual QPRC units enable precise encoder position tracking with configurable AIN/BIN/ZIN edge detection and 16-bit counters.

Key Specifications

Pinout & Package

LQFP-100 package (0.65 mm pitch, 14 × 14 mm body), RoHS-compliant, with exposed thermal pad. Pin count and I/O allocation optimized for motor control: 51 general-purpose I/O pins, 9 A/D inputs, 8 dedicated timer output pins, and 3 quadrature encoder inputs (AIN/BIN/ZIN).

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F303VCT6 and RL78/F13, the CY9AF111LAQN-G-AVE2 delivers optimal balance of motor-specific peripherals (QPRC, LIN engine, DTIF), compact LQFP-100 packaging, and industrial-grade voltage range - making it the most direct fit for cost-constrained, encoder-driven BLDC applications without sacrificing protocol compliance.

Availability

CY9AF111LAQN-G-AVE2 is available at Aetrix Electronics and suitable for industrial motor drives, automotive body electronics, smart appliance controllers, and PLC I/O modules requiring stable component supply, long-term lifecycle assurance, and qualified automotive-grade sourcing.

Supply support for CY9AF111LAQN-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 global semiconductor leader headquartered in Munich, Germany, specializing in power management, automotive MCUs, and industrial control solutions with over 40 years of embedded systems expertise.

The CY9A110A/CY9A110 Series - now part of Infineon's FM3 portfolio - was designed specifically for high-performance, cost-sensitive motor control and real-time embedded applications requiring integrated analog peripherals, deterministic timing, and automotive-grade reliability.

FAQ

What is the maximum operating frequency and supported voltage range for CY9AF111LAQN-G-AVE2?

The CY9AF111LAQN-G-AVE2 operates at up to 40 MHz and supports a wide supply voltage range of 2.7 V to 5.5 V. This allows direct compatibility with both 3.3 V and 5 V industrial control rails without external regulators. The core uses an internal PLL to derive the system clock from external or built-in oscillators, and all I/Os remain functional across the full voltage range with guaranteed timing margins per the datasheet's AC characteristics table.

Does CY9AF111LAQN-G-AVE2 support hardware LIN 2.1 communication?

Yes, the CY9AF111LAQN-G-AVE2 integrates a dedicated LIN controller compliant with LIN specification 2.1. It supports master/slave modes, programmable break field length (13–16 bits), break delimiter (1–4 bits), and automatic error detection including parity, framing, and overrun errors. Hardware LIN eliminates the need for bit-banging firmware and ensures precise timing for automotive body electronics applications.

How many A/D converter channels and what resolution does this MCU provide?

The CY9AF111LAQN-G-AVE2 includes two independent 12-bit successive approximation A/D converters totaling nine input channels. Conversion time is 1.0 μs at 5 V supply, and features include priority-based scanning, FIFO buffering (16-step for scan, 4-step for priority), and hardware-triggered sampling synchronized to timer events - essential for current sensing in motor control loops.

Is External Bus Interface (EBI) available on this part?

No, the CY9AF111LAQN-G-AVE2 does not support the External Bus Interface. According to the official datasheet (Document Number 002-04672 Rev. *H), EBI is explicitly excluded from the CY9AF111LA variant. This omission reduces pin count and simplifies PCB layout for applications that rely solely on on-chip Flash (64 KB) and SRAM (16 KB), such as compact motor controllers and sensor nodes.