CH32V003F4P6-EVT-R0 — QingKe 32-bit RISC‑V microcontroller Key benefits — why choose this MCU Compact, capable controller for small to mid‑scale embedded projects: delivers a full 32‑bit RISC‑V core and essential peripherals in a low-footprint package. Low-power options and reset/protection features reduce development time for battery-powered and safety-conscious designs. Rich peripheral set (timers, ADC, UART, SPI, I2C, DMA, watchdogs) supports common real‑world tasks without adding external components. What it does and how it solves problems Fast, efficient processing: QingKe RISC‑V V2A core runs up to 48 MHz to handle control loops, protocol stacks and peripheral management with headroom for responsive performance. Small on‑chip memory and integrated debug make firmware development and in-field updates straightforward: 16 KB Flash and 2 KB SRAM plus 1-wire serial debug (SDI). Multiple timers, ADC and DMA let you offload routine housekeeping and maintain precise timing for motor control, sensing and PWM generation. Two watchdog timers and a 32‑bit SysTick timer improve system reliability and allow deterministic task scheduling and recovery. Important specifications (concise) Processor: QingKe 32‑bit RISC‑V V2A with 2‑level interrupt nesting support Max system clock: up to 48 MHz Memory: 16 KB Flash, 2 KB SRAM ADC: 10‑bit ADC (one group) DMA: one group, single‑channel general‑purpose DMA controller Timers: one 16‑bit extended control timer, one 16‑bit general‑purpose timer, 1 × 32‑bit SysTick Watchdogs: 2 independent watchdog timers Interfaces: 1 × USART, 1 × I2C (IC) interface, 1 × SPI interface I/O: 18 I/O ports with external interrupt capability Unique device identity: 64‑bit chip ID Debug: 1‑wire serial debug (SDI) interface Power: dual supply support 3.3 V / 5 V Power saving: sleep and standby modes Reset and brown‑out protection: Power Up/Down Reset and Programmable Voltage Detector Compatibility and practical attributes Supply voltage 3.3/5 V makes it compatible with a wide range of sensors, actuators and legacy logic levels. Small memory footprint and integrated peripherals reduce BOM and PCB area for compact devices. Standard serial interfaces (USART, SPI, I2C) allow straightforward integration with common sensors, displays and radio modules. Unique 64‑bit chip ID supports secure or traceable deployments and simple manufacturing identification. Typical applications / use scenarios Battery‑powered sensor node: Use the 10‑bit ADC for analog sensors, sleep/standby modes for long battery life, and I2C/SPI for external sensor modules. Motor or actuator control for small appliances: Use the 16‑bit extended control timer and general‑purpose timer for PWM and timing, plus watchdogs for fail‑safe recovery. Serial‑connected controllers and human‑machine interfaces: Use USART for console or modem links, SPI/I2C for displays and peripherals, and the SysTick timer for UI task scheduling. Reliability and development support Watchdog timers and programmable voltage detector increase system robustness under supply faults or software hangs. 1‑wire SDI debug and standard serial interfaces simplify firmware development, testing and field updates. This feature set makes the CH32V003F4P6-EVT-R0 a practical choice for compact embedded systems that require a balanced mix of processing, peripherals and low‑power operation without a large bill of materials.