WCH CH32V103R8T6

Qingke 32-bit microprocessor RISC-V3A is based on RISC-V open-source instruction set design, and its system architecture achieves the best balance of low-cost, low-power consumption and functional applications of the hardware platform. CH32V103 series general-purpose microcontrollers are equipped with a wealth of peripheral interfaces and functional modules, including clock security mechanism, multi-level power management, general DMA controller, multi-channel 12-bit ADC, multi-channel touch-key capacitance detection, advanced-control/general-purpose timers, USB2.0 host controller and device controller, multi-channel I2C/USART/SPI, etc. The microcontroller is equipped with a complete software and hardware platform and debugging interface tools, which can meet the needs of industrial, medical, consumer and other markets.

• Core:
  • RV32IMAC instruction set combination, hardware multiplication and division
  • Fast programmable interrupt controller + Hardware on-site preservation and recovery
  • Static branch prediction
  • Conflict handling mechanism
  • Up to 80MHz system frequency
• Memory:
  • 20KB volatile data storage area, SRAM
  • 64KB user application storage area, CodeFlash
  • 3.75KB system storage area, BootLoader
  • 128B system non-volatile configuration information memory area
  • 128B user-defined information storage area
• Power Management and Low Power:
  • Power supply range: 2.7V ~ 5.5V, GPIO synchronous power supply voltage
  • Low-power modes: Sleep/Stop/Standby
  • VBAT supply for RTC and backup registers independently
• System clock and reset:
  • Built-in factory-trimmed 8MHz RC oscillator
  • Built-in 40KHz RC oscillator
  • Built-in PLL, optional CPU clock up to 80MHz
  • External 4~16MHz high-speed oscillator
  • External 32.768KHz low-speed oscillator
  • Power-on/power-down reset (POR/PDR), programmable voltage detector (PVD)
• Real-time clock (RTC): 32-bit independent timer
• General-purpose DMA controller:
  • Provide 7 channels
  • Support peripheral and memory, memory and memory
  • Support ring buffer area management
  • Support peripherals: TIM/ADC/USART/I2C/SPI
• 12-bit ADC:
  • Conversion range: 0 ~ VDDA. The conversion is completed in 1 us at the fastest
  • 16 external signal channels + 2 internal signal channels
  • On-chip temperature sensor
• 16-channel touch-key channel detection
• 7 timers:
  • 1 × 16-bit advanced-control timer, including general-purpose timer function, and provided with dead zone control and emergency brake, provide PWM for motor control
  • 3 × 16-bit general-purpose timers, provide up to 4 channels for input capture/output comparison/PWM/pulse counting and incremental encoder input
  • 2 watchdog timers (independent watchdog and window watchdog)
  • System time timer: 64-bit self-increment counter
• 8 standard communication interfaces:
  • USB2.0 host/device interface (full-speed and low-speed)
  • 2 I2Cs (support SMBus/PMBus)
  • 3 USARTs (support ISO7816 interface, LIN, IrDA interfaces and modem control)
  • 2 SPIs (support Master and Slave modes)
• Fast GPIO ports:
  • Up to 51 I/O ports
  • Can map to 16 external interrupts
  • Security features: CRC calculation unit, 96-bit unique ID
  • Debug mode: 2-wire serial debug interface
  • Package
    • LQFP64M
    • LQFP48
    • QFN48×7

• motor drive and application control
• medical and handheld devices
• PC game peripherals and GPS platforms
• programmable controllers
• frequency converters
• printers
• scanners
• alarm systems
• video intercom
• heating, ventilation and air conditioning systems