Infineon Technologies CY9AF1A1NPF-G-SNE1

Overview

CY9AF1A1NPF-G-SNE1 from Infineon Technologies (formerly Cypress) is a 32-bit Arm® Cortex®-M3 microcontroller with 128 KB on-chip Flash, 16 KB SRAM, 20 MHz max operating frequency, 12-bit ADC (16 ch, 1.0 μs conversion), and 10-bit DAC (2 ch). It integrates motor control timers, UART/CSIO/I²C interfaces, RTC, HDMI-CEC receiver/transmitter, and six low-power modes - deployed in industrial motor drives and embedded control systems.

For engineers reviewing the CY9AF1A1NPF-G-SNE1 datasheet, CY9AF1A1NPF-G-SNE1 pinout, CY9AF1A1NPF-G-SNE1 application, or CY9AF1A1NPF-G-SNE1 equivalent, key selection criteria include Flash/SRAM size, 12-bit ADC timing and FIFO depth, dual DAC resolution, IGBT-mode PWM dead-time support, and 1.8–5.5 V supply range compatibility with mixed-voltage I/O.

Technical Context

This MCU implements the Arm Cortex-M3 r2p1 core with NVIC supporting 32 peripheral interrupts and 8 priority levels, plus a 24-bit SysTick timer for RTOS scheduling. Its clock system combines five sources - including 4–20 MHz main oscillator, 32.768 kHz sub-clock, and dual CR oscillators - supervised by Clock Supervision (CSV) for fail-safe reset on external clock failure.

The peripheral set targets real-time embedded control: Motor Control Timers support 16-bit PWM/PPG/PWC modes with DTIF emergency stop; HDMI-CEC blocks handle SIRCS/NEC/CEC protocols with automatic header transmission and arbitration loss detection; and the 16-byte backup register retains state across Deep Standby RTC mode.

Key Specifications

Pinout & Package

The CY9AF1A1NPF-G-SNE1 is housed in a 100-pin LQFP package (14 mm × 14 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions are fully relocatable via port relocation registers, enabling flexible PCB layout and peripheral remapping without hardware changes.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 32-bit Arm Cortex-M3 microcontroller applications.

Compared with STM32F103VCT6 and RP2040, CY9AF1A1NPF-G-SNE1 uniquely combines CEC protocol acceleration, DTIF-enabled motor safety, and runtime port relocation - making it optimal for industrial controllers requiring both real-time responsiveness and multi-standard remote interoperability.

Availability

CY9AF1A1NPF-G-SNE1 is available at Aetrix Electronics and suitable for industrial motor drives, smart HVAC systems, programmable logic controllers, and battery-powered remote monitors requiring stable component supply across long product lifecycles.

Supply support for CY9AF1A1NPF-G-SNE1 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 focused on power systems, automotive electronics, and industrial control solutions, with deep expertise in embedded MCUs for safety-critical applications.

The CY9A1A0N Series belongs to Infineon's FM3 family of general-purpose 32-bit microcontrollers, designed specifically for cost-sensitive, low-power industrial control applications requiring rich analog integration and motor timing peripherals.

FAQ

What is the maximum operating frequency and supported clock sources?

The CY9AF1A1NPF-G-SNE1 operates up to 20 MHz using five configurable clock sources: 4–20 MHz external main oscillator, 32.768 kHz sub-clock, built-in 4 MHz high-speed CR oscillator, 100 kHz low-speed CR oscillator, and Main PLL. The PLL can accept either the main oscillator or high-speed CR as input, enabling flexible trade-offs between accuracy and power consumption.

Does this MCU support hardware-based motor control features?

Yes. It includes dedicated IGBT-mode PWM with programmable dead-time insertion, DC chopper waveform generation, input capture for rotor position sensing, A/D activation triggers, and DTIF (motor emergency stop) interrupt. These features are implemented in hardware timers and require no CPU intervention during fault events, ensuring deterministic response times below 100 ns.

How does the port relocation function work in practice?

Port relocation allows runtime assignment of peripheral functions (e.g., UART0_TX, I²C0_SCL) to any compatible GPIO pin via dedicated relocation registers. For example, UART0_TX can be moved from default PA0 to PB5 without changing PCB layout - enabling rapid firmware validation and board reuse across multiple product variants with differing I/O routing constraints.

What low-power modes are available and what is retained in Deep Standby RTC mode?

Six low-power modes are supported: Sleep, Timer, RTC, Stop, Deep Standby RTC, and Deep Standby Stop. In Deep Standby RTC mode, the 32.768 kHz RTC oscillator remains active, the 16-byte backup register is preserved, and wake-up is possible via external interrupt or RTC alarm - all while drawing less than 1.5 μA, making it ideal for battery-backed timekeeping and event-triggered recovery.