Infineon Technologies CY9AF1A2MPMC-G-UNE2

Overview

CY9AF1A2MPMC-G-UNE2 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 CY9AF1A2MPMC-G-UNE2 datasheet, CY9AF1A2MPMC-G-UNE2 pinout, CY9AF1A2MPMC-G-UNE2 application, or CY9AF1A2MPMC-G-UNE2 equivalent, key selection criteria include Flash/SRAM size, 12-bit ADC timing and FIFO depth, dual DAC resolution, RTC calendar accuracy with leap-year support, and IGBT-mode PWM with dead-time insertion for motor phase control.

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 - 4–20 MHz main oscillator, 32.768 kHz sub-clock, 4 MHz/100 kHz internal CR oscillators, and configurable Main PLL - supervised by Clock Supervisor (CSV) for external clock failure detection.

The peripheral set includes eight base timers (configurable as 16-/32-bit reload, PWM, PPG, or PWC), multi-function serial interfaces (up to 8 channels, each selectable as UART/CSIO/I²C), and dedicated motor control blocks: DTIF interrupt, A/D activation compare, and DC chopper waveform generation - all synchronized to PWM edges.

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 32-bit Arm Cortex-M3 microcontroller applications.

Compared with STM32F103VCT6 and RA4M1, the CY9AF1A2MPMC-G-UNE2 delivers optimized integration for cost-sensitive industrial motor control and smart appliances where HDMI-CEC, IGBT-mode PWM, and ultra-low-power RTC retention are design-critical - trading raw performance for domain-specific peripheral efficiency.

Availability

CY9AF1A2MPMC-G-UNE2 is available at Aetrix Electronics and suitable for industrial motor drives, smart appliance controllers, energy metering interfaces, and building automation nodes requiring stable component supply across multi-year production cycles.

Supply support for CY9AF1A2MPMC-G-UNE2 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.

This device belongs to the FM3 family of general-purpose 32-bit microcontrollers, designed specifically for cost-optimized, low-power embedded control in motor-driven equipment and consumer electronics with integrated human interface capabilities.

FAQ

What is the maximum operating frequency and supported voltage range?

The CY9AF1A2MPMC-G-UNE2 operates at up to 20 MHz and supports a wide supply voltage range of 1.8 V to 5.5 V. This allows direct interfacing with both modern low-voltage logic and legacy 5 V peripherals without level shifters. The core and peripherals remain fully functional across this range, with internal regulators maintaining stable operation under varying load conditions.

Does this MCU support hardware debugging, and what interface is used?

Yes, it features a Serial Wire JTAG Debug Port (SWJ-DP) that combines SWD and JTAG on shared pins. This enables full debug visibility - including breakpoints, watchpoints, and memory inspection - using standard tools like Segger J-Link or ST-Link v2. No external debug header is required, as debug signals share GPIO pins configurable at boot.

How does the RTC maintain accuracy and retain data during power loss?

The RTC uses an external 32.768 kHz crystal connected to RTC_XIN/RTC_XOUT for ±20 ppm accuracy across -40°C to +85°C. It retains time and date (including leap-year correction) and 16 bytes of backup register data in Deep Standby RTC mode with typical current draw below 1 µA, powered by a coin-cell or supercapacitor on VBACK.

Can the ADC operate synchronously with PWM for motor current sensing?

Yes, the A/D activation compare function triggers ADC conversion precisely on PWM edge events. This ensures deterministic sampling aligned to inverter switching, critical for accurate current reconstruction in FOC algorithms. The 16-step FIFO stores sequential samples without CPU intervention, reducing jitter and offloading processing overhead.