Infineon Technologies CY9BF106NAPMC-G-UNE1

Overview

CY9BF106NAPMC-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 Base Timers, QPRC, and Multi-function Timers. It targets cost-sensitive industrial motor drives and embedded control systems requiring LIN 2.1, UART, I²C, and CSIO interfaces.

For engineers reviewing the CY9BF106NAPMC-G-UNE1 datasheet, CY9BF106NAPMC-G-UNE1 pinout, CY9BF106NAPMC-G-UNE1 application, or CY9BF106NAPMC-G-UNE1 equivalent, key selection criteria include Flash/SRAM partitioning, dual SRAM bus connectivity (I-code/D-code vs. system bus), LIN master/slave support with configurable break field (13–16 bit), 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 zero-wait-state Flash access up to 60 MHz (with prefetch buffer) and dual-bus SRAM architecture separating instruction/data (SRAM0) from system peripherals (SRAM1).

The peripheral set includes eight Base Timer channels (PWM/PPG/reload/PWC), two QPRC units for encoder position tracking, and a dedicated LIN controller compliant with Rev. 2.1 - supporting break generation, delimiter control, and error detection (parity, framing, overrun). All serial interfaces (UART/CSIO/I²C/LIN) share FIFO-based double-buffered transmit/receive paths.

Key Specifications

Pinout & Package

Package: 120-pin LQFP (14 mm × 14 mm, 0.4 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 STM32F103VET6 and RA4M1, CY9BF106NAPMC-G-UNE1 delivers superior motor control integration via hardware QPRC and LIN 2.1 with configurable break fields - reducing BOM count and firmware complexity in encoder-based drive systems.

Availability

CY9BF106NAPMC-G-UNE1 is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, smart power outlets, and PLC I/O modules requiring stable component supply, long-term lifecycle assurance, and qualified automotive-grade sourcing.

Supply support for CY9BF106NAPMC-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 is a German semiconductor manufacturer specializing in power management, automotive MCUs, and industrial control solutions, with global manufacturing and quality certification to ISO/TS 16949 and ISO 9001.

This device belongs to the FM3 family of 32-bit Arm Cortex-M3 microcontrollers, designed specifically for high-performance, cost-optimized embedded motor control and industrial automation applications with integrated analog and timing peripherals.

FAQ

What is the maximum operating frequency and supported clock sources?

The CY9BF106NAPMC-G-UNE1 operates at up to 80 MHz using five selectable clock sources: external 4–48 MHz main oscillator, 32.768 kHz sub-clock, built-in 4 MHz high-speed CR oscillator, 100 kHz low-speed CR oscillator, and main PLL. The PLL supports both main clock and high-speed CR inputs, enabling flexible frequency synthesis for real-time control timing budgets.

Does this MCU support hardware-based LIN communication without external transceivers?

No - the CY9BF106NAPMC-G-UNE1 integrates a LIN protocol controller compliant with Rev. 2.1 but requires an external LIN physical-layer transceiver (e.g., TLE7259-3GE) for bus-level signaling. The MCU handles frame formatting, checksum calculation, break/delimiter generation, and error detection entirely in hardware.

How is memory protection implemented, and what is its scope?

Memory Protection Unit (MPU) is implemented per Arm Cortex-M3 specification, supporting up to 8 regions with configurable size, access permissions (privileged/user, read/write), and memory attributes. It protects Flash, SRAM, and peripheral address spaces to prevent unintended code execution or data corruption - enhancing reliability in safety-critical embedded systems.

What debug interfaces are available, and do they support trace functionality?

The device supports Serial Wire JTAG Debug Port (SWJ-DP) and Embedded Trace Macrocell (ETM) for real-time instruction and data trace. ETM enables non-intrusive program flow analysis and timing profiling via SWO pin, essential for optimizing motor control loop performance and verifying interrupt latency under load.