Infineon Technologies CY9AFAA1NPF-G-SNE1

Overview

CY9AFAA1NPF-G-SNE1 from Infineon Technologies (formerly Cypress) is a 32-bit Arm® Cortex®-M3 microcontroller with 128 KB Flash, 16 KB SRAM, 100-pin LQFP package, and integrated LCD controller supporting up to 44 SEG × 4 COM. It operates at up to 20 MHz, features dual watchdog timers, hardware RTC with leap-year support, and targets low-power embedded motor control and HMI applications.

For engineers reviewing the CY9AFAA1NPF-G-SNE1 datasheet, CY9AFAA1NPF-G-SNE1 pinout, CY9AFAA1NPF-G-SNE1 application, or CY9AFAA1NPF-G-SNE1 equivalent, key selection criteria include its 12-bit ADC (1.0 µs conversion), 10-bit DAC, HDMI-CEC/remote receiver support, 5V-tolerant I/O capability, and six low-power modes including Deep Standby RTC.

Technical Context

This MCU implements the Arm Cortex-M3 r2p1 core with NVIC supporting 32 peripheral interrupts and 8 priority levels. Its clock system integrates five sources - two external oscillators (4–20 MHz main, 32.768 kHz sub), two internal CR oscillators (4 MHz high-speed, 100 kHz low-speed), and a configurable Main PLL - enabling robust clock supervision via CSV and fail-safe reset generation.

The peripheral set includes an LCD controller with internal bias resistors (10 kΩ or 100 kΩ selectable), multi-function serial interfaces (up to 8 channels configurable as UART/CSIO/I²C), and motor-control-optimized timers with dead-time insertion, DTIF interrupt, and DC chopper waveform generation.

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 microcontroller applications.

Compared with STM32F103VET6 and RL78/G14 R5F104PJSP, CY9AFAA1NPF-G-SNE1 uniquely combines LCD driving, HDMI-CEC, and motor-control timers in a single 100-pin LQFP package - reducing system-level component count and firmware complexity for appliance-grade embedded controllers.

Availability

CY9AFAA1NPF-G-SNE1 is available at Aetrix Electronics and suitable for home appliance motor control, industrial HMI panels, smart metering interfaces, and energy monitoring gateways requiring stable component supply and long-term lifecycle support.

Supply support for CY9AFAA1NPF-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 headquartered in Munich, Germany, specializing in power management, automotive, and industrial control solutions.

CY9AFAA1NPF-G-SNE1 belongs to the FM3 family of 32-bit microcontrollers designed specifically for cost-optimized, low-power embedded applications in white goods, industrial HMIs, and metering systems.

FAQ

What is the maximum operating frequency and core revision of CY9AFAA1NPF-G-SNE1?

The CY9AFAA1NPF-G-SNE1 operates at up to 20 MHz and implements the Arm Cortex-M3 processor version r2p1. This revision supports the full Thumb-2 instruction set, NVIC with 32 peripheral interrupt channels, and 24-bit SysTick timer - confirmed in the official Infineon FM3 Peripheral Manual and datasheet Rev. *F.

Does CY9AFAA1NPF-G-SNE1 support 5V-tolerant I/O, and which pins are compatible?

Yes, selected GPIO pins are 5V-tolerant when configured as inputs or outputs in standard mode. The datasheet specifies I/O circuit types per pin; pins marked "Type C" (e.g., P00–P07, P10–P17) support 5V tolerance. This enables direct interfacing with legacy 5V peripherals without level shifters - verified in Section 4 "I/O Circuit Type" of document 002-05673.

How does the LCD controller handle bias voltage generation?

The LCD controller provides five dedicated bias pins (VV0–VV4) and includes an internal resistor divider network with selectable values (10 kΩ or 100 kΩ). Bias voltage is generated by connecting these pins to external LCD glass electrodes - no external resistors needed. Configuration is done via LCDC register settings, as detailed in Section 13.3 of the FM3 Peripheral Manual.

What low-power modes are supported, and what is the lowest achievable current draw?

CY9AFAA1NPF-G-SNE1 supports six low-power modes: Sleep, Timer, RTC, Stop, Deep Standby RTC, and Deep Standby Stop. In Deep Standby RTC mode, typical current consumption is less than 1 µA while maintaining RTC operation and 16-byte backup register retention - specified in Section 11.9 of datasheet Rev. *F under "Return Time from Low-Power Consumption Mode".