Infineon Technologies CY9AFA32NPMC-G-SNE2

Overview

CY9AFA32NPMC-G-SNE2 from Infineon Technologies (formerly Cypress) is a 32-bit ARM® Cortex®-M3 microcontroller with 128 KB on-chip Flash, 16 KB SRAM, integrated LCD controller (44×4 or 40×8 SEG/COM), 16-channel 12-bit ADC (1.0 μs conversion), and dual 10-bit DACs. It operates up to 20 MHz, supports six low-power modes, and targets embedded motor control and industrial HMI applications.

For engineers reviewing the CY9AFA32NPMC-G-SNE2 datasheet, CY9AFA32NPMC-G-SNE2 pinout, CY9AFA32NPMC-G-SNE2 application, or CY9AFA32NPMC-G-SNE2 equivalent, key selection criteria include LCD drive capability, motor timer features (PPG, PWM, dead-time insertion), HDMI-CEC/remote receiver support, and 1.8–5.5 V wide-voltage operation with 5V-tolerant I/O.

Technical Context

The device implements an ARM Cortex-M3 r2p1 core with NVIC supporting 32 peripheral interrupts and 8 priority levels, plus a 24-bit SysTick timer for RTOS integration. Its clock system combines 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.

Peripheral integration includes eight multi-function serial interfaces (UART/CSIO/I²C), eight base timers (16-/32-bit PWM, PPG, reload, PWC), three multi-function timers with input capture, output compare, A/D activation, and waveform generation, plus dedicated HDMI-CEC transceiver/receiver logic with automatic header transmission, arbitration loss detection, and noise-filtered SIRCS/NEC/CEC protocol decoding.

Key Specifications

Pinout & Package

This device 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 per peripheral via register configuration, supporting flexible PCB layout and I/O reuse.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F103VCT6 and RL78/G14, CY9AFA32NPMC-G-SNE2 uniquely integrates LCD driving, HDMI-CEC/IR reception, and motor-specific timers in a single die - reducing BOM count and PCB area for compact embedded controllers requiring both human interface and motion control.

Availability

CY9AFA32NPMC-G-SNE2 is available at Aetrix Electronics and suitable for industrial HMI, BLDC motor control, smart appliance remote interface, and energy monitoring gateway applications requiring stable component supply and long-term lifecycle support.

Supply support for CY9AFA32NPMC-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 German semiconductor leader specializing in power management, automotive MCUs, and industrial control solutions, with global manufacturing and quality certification to ISO/TS 16949 and IATF 16949.

This part belongs to the FM3 family of general-purpose 32-bit microcontrollers designed specifically for cost-sensitive, low-power embedded systems integrating LCD, motor control, and remote interface functionality - bridging the gap between high-end application processors and basic 8-bit MCUs.

FAQ

What is the maximum operating frequency and supported clock sources?

The CY9AFA32NPMC-G-SNE2 operates up to 20 MHz using its ARM Cortex-M3 core. It supports five clock 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 that can multiply either the main or high-speed CR clock. Clock supervision via CSV ensures reliability during external clock failure.

Does this MCU support 5V-tolerant I/O, and which pins are compatible?

Yes, selected I/O pins are 5V tolerant - specifically those designated as "Type-C" or "Type-D" in the "I/O Circuit Type" section of the datasheet (pages 35–43). These include most port pins used for UART, I²C, and general-purpose functions, but not LCD segment/common outputs or analog inputs. Always verify pin type in Table 5-1 before connecting to 5V peripherals.

How does the LCD controller handle display updates and power efficiency?

The LCDC supports frame-synchronized interrupts, blinking, and inverted display modes - enabling dynamic content updates without CPU polling. It uses internal resistor dividers (10kΩ or 100kΩ selectable) and dedicated VV0–VV4 bias pins, eliminating external components. In Deep Standby RTC mode, the LCD continues running from the 32.768 kHz sub-clock while drawing <1 μA, preserving display state during ultra-low-power operation.

Can the HDMI-CEC receiver operate independently of the main CPU clock?

Yes - the HDMI-CEC receiver block operates from the 32.768 kHz sub-clock or internal low-speed CR oscillator, allowing it to remain active and detect wake events (e.g., TV power-on command) even when the CPU is in Stop or Deep Standby modes. Its hardware noise filter and programmable bit timing eliminate need for external signal conditioning, and status interrupts notify firmware only upon valid frame reception or arbitration loss.