Infineon Technologies CY9BF104NAPMC-G-UNE1

Overview

CY9BF104NAPMC-G-UNE1 from Infineon Technologies (formerly Cypress) is a 32-bit Arm® Cortex®-M3 microcontroller with 512 KB on-chip Flash, 64 KB SRAM (32 KB SRAM0 + 32 KB SRAM1), 80 MHz max CPU frequency, and integrated motor control peripherals including QPRC, multi-function timers, and LIN/UART/I²C/CSIO interfaces. It targets cost-sensitive industrial motor drives and embedded control systems requiring real-time position sensing and deterministic communication.

For engineers reviewing the CY9BF104NAPMC-G-UNE1 datasheet, CY9BF104NAPMC-G-UNE1 pinout, CY9BF104NAPMC-G-UNE1 application, or CY9BF104NAPMC-G-UNE1 equivalent, key selection criteria include Flash/SRAM partitioning, dual-SRAM bus architecture, LIN 2.1 compliance, quadrature encoder interface timing, and hardware watchdog independence from main clock domain.

Technical Context

This MCU implements the Arm Cortex-M3 r2p0 core with Memory Protection Unit (MPU) and NVIC supporting 48 peripheral interrupts across 16 priority levels. Its memory subsystem features separate I-code/D-code buses for SRAM0 and system bus for SRAM1, enabling concurrent instruction fetch and data access without contention.

The peripheral set includes two Quadrature Position/Revolution Counters (QPRC) with configurable AIN/BIN/ZIN edge detection, 16-channel 12-bit SAR ADC with FIFO-based scan mode, and eight base timer channels supporting PWM, PPG, reload, and PWC modes - all synchronized to a single clock domain derived from Main PLL or CR oscillators.

Key Specifications

Pinout & Package

Package: 120-pin LQFP (14 mm × 14 mm, 0.4 mm pitch), thermally enhanced, lead-free, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 32-bit motor control microcontroller applications.

Compared with STM32F303VCT6 and RA4M1, CY9BF104NAPMC-G-UNE1 delivers deterministic LIN 2.1 timing and hardware-accelerated quadrature counting-critical for safety-rated motor control-without consuming CPU cycles for protocol or position decoding.

Availability

CY9BF104NAPMC-G-UNE1 is available at Aetrix Electronics and suitable for industrial motor drives, automotive body electronics, smart HVAC systems, and factory automation I/O hubs requiring stable component supply and long-term lifecycle support.

Supply support for CY9BF104NAPMC-G-UNE1 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 AG is a German semiconductor manufacturer specializing in power management, automotive ICs, and embedded controllers, with global R&D and manufacturing infrastructure.

This device belongs to the FM3 family of high-performance 32-bit microcontrollers designed specifically for real-time industrial motor control, where deterministic peripheral timing, encoder interface fidelity, and functional safety readiness are primary design objectives.

FAQ

Does CY9BF104NAPMC-G-UNE1 support JTAG debugging?

Yes, it features a Serial Wire JTAG Debug Port (SWJ-DP) compliant with ARM CoreSight standards. This enables full boundary-scan, real-time register inspection, and flash programming via standard tools like Segger J-Link or ST-Link v2. The debug interface remains accessible even during low-power STOP mode when configured for wake-up debugging.

What is the maximum operating voltage range?

The device operates from 2.7 V to 5.5 V on the VCC supply rail, supporting both 3.3 V and 5 V system designs without level-shifting. Internal voltage regulators maintain stable core and I/O voltages across this range, and the Low Voltage Detector (LVD) provides programmable reset thresholds at 2.5 V (LVD2) and 2.7 V (LVD1) for fault reporting.

Can the QPRC units operate independently of the CPU clock?

Yes, QPRC units are clocked by the peripheral clock domain (PCLK), which can be derived from the main PLL, sub-clock (32.768 kHz), or built-in CR oscillators. This allows position counting to continue during CPU sleep modes (SLEEP/TIMER), and index pulse capture remains active even when the Cortex-M3 core is halted.

Is the Flash memory protected against unauthorized readout?

Yes, the device includes hardware-based code protection using Flash security bits that disable read access to Flash contents via SWD/JTAG and prevent mass erase unless security is explicitly cleared via a specific unlock sequence. This meets IEC 61508 SIL2 requirements for embedded firmware confidentiality in industrial control applications.