Infineon Technologies CY9AFAA1NPMC-G-SNE2

Overview

CY9AFAA1NPMC-G-SNE2 from Infineon Technologies (formerly Cypress) is a 32-bit Arm® Cortex®-M3 microcontroller with 128 KB Flash, 16 KB SRAM, and integrated LCD controller supporting up to 44 SEG × 4 COM. It operates at up to 20 MHz, features dual 10-bit DACs, 16-channel 12-bit ADC (1.0 µs conversion), and hardware watchdog timers. Used in industrial HMI panels requiring low-power operation and on-chip display driving.

For engineers reviewing the CY9AFAA1NPMC-G-SNE2 datasheet, CY9AFAA1NPMC-G-SNE2 pinout, CY9AFAA1NPMC-G-SNE2 application, or CY9AFAA1NPMC-G-SNE2 equivalent, key selection criteria include LCD drive capability (VV0–VV4 bias pins), RTC calendar support with leap-year handling, HDMI-CEC/remote control receiver compliance (NEC/SIRCS/CEC), and dual watchdog architecture (HW + SW) with CR oscillator supervision.

Technical Context

The CY9AFAA1NPMC-G-SNE2 implements a fixed-function FM3 peripheral subsystem tightly coupled to the Cortex-M3 r2p1 core, including dedicated motor-control timers with dead-time insertion and IGBT mode, multi-mode serial interfaces (UART/CSIO/I²C), and a programmable LCD controller with internal divide resistors (10 kΩ or 100 kΩ selectable). Its clock system integrates five sources: main oscillator (4–20 MHz), sub-oscillator (32.768 kHz), two CR oscillators (4 MHz / 100 kHz), and Main PLL.

Power management includes six low-power modes (Sleep to Deep Standby Stop), with backup register retention (16 bytes) and LVD with dual thresholds (LVD1 interrupt, LVD2 reset). The device supports SWJ-DP debug interface and operates across 1.8–5.5 V (2.2–5.5 V when LCDC active), enabling direct interfacing with 5 V tolerant I/O pins on 100-pin LQFP package.

Key Specifications

Pinout & Package

Package: 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level 3.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar embedded controller applications.

Compared with MB9BF568RPMC-G-SNE2 and STM32F303VCT6, CY9AFAA1NPMC-G-SNE2 delivers optimal cost-performance balance for LCD-centric industrial controllers where on-chip bias generation, NEC/CEC hardware decode, and minimal external components are design priorities.

Availability

CY9AFAA1NPMC-G-SNE2 is available at Aetrix Electronics and suitable for industrial HMI panels, smart appliance control units, energy metering interfaces, and building automation nodes requiring stable component supply and long-term lifecycle support.

Supply support for CY9AFAA1NPMC-G-SNE2 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 systems, automotive MCUs, and security solutions.

The CY9AFAA1NPMC-G-SNE2 belongs to the FM3 microcontroller product line, designed specifically for cost-sensitive, low-power embedded control applications with integrated human-machine interface peripherals including LCD drivers and remote control receivers.

FAQ

What is the maximum operating frequency and supported clock sources?

The CY9AFAA1NPMC-G-SNE2 runs at up to 20 MHz using its Arm Cortex-M3 core. Clock sources include an external main oscillator (4–20 MHz), 32.768 kHz sub-oscillator, built-in 4 MHz and 100 kHz CR oscillators, and a Main PLL that accepts either the main or high-speed CR clock as input. All sources are managed by the Clock and Reset unit with CSV supervision.

Does this MCU support hardware-accelerated HDMI-CEC communication?

Yes - it includes a dedicated HDMI-CEC/Remote Control Receiver with hardware decoding for NEC, SIRCS, and HDMI-CEC protocols. It provides automatic header block transmission, arbitration loss detection, and START/EOM/ACK generation. The transmitter supports 1-byte data blocks with status interrupts, and the receiver includes adjustable bit-timing and noise filtering.

How many I/O pins are 5 V tolerant and what is the port relocate function?

Selected GPIO ports are 5 V tolerant - specific pins are identified in the "I/O Circuit Type" section of the datasheet (Document No. 002-05673 Rev. *F, page 32). The port relocate function allows runtime assignment of peripheral functions (e.g., UART, I²C) to alternative pin sets, improving PCB routing flexibility and enabling firmware-driven I/O optimization without hardware changes.

What low-power modes are supported and how does RTC operate 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 main CPU and most peripherals are powered down while the 32.768 kHz sub-clock continues running the RTC, maintaining calendar time and retaining 16 bytes of backup register content. Wake-up occurs via RTC alarm, external interrupt, or WKUP pin, with typical current draw below 1 µA.