WCH CH32V203C8T6

CH32V series are industrial-grade general-purpose microcontrollers designed based on QingKe 32-bit RISC-V. The whole series of products into the hardware stack area, fast interrupt entry and other designs, compared to the standard greatly improved the interrupt response speed. CH32V203 is based on 32-bit RISC-V core design of industrial-grade enhanced low-power general-purpose microcontrollers, high-performance, in the product features support 144MHz main frequency zero-wait operation, equipped with V4B core, work and sleep power consumption significantly reduced year-on-year. CH32V203 series integrated dual USB interface, support USB Host and USB Device function, with CAN interface (2.0B active), dual OPA, 4 groups of USART, dual I2C, 12-bit ADC, 10-channel Touchkey and other rich peripheral resources.

• Core:
  • QingKe 32-bit RISC-V core with multiple instruction set combinations
  • Fast programmable interrupt controller + hardware interrupt stack
  • Branch prediction, conflict handling mechanism
  • Single cycle multiplication, hardware division, hardware FPU
  • System main frequency 144MHz
• Memory:
  • Available with up to 64KB volatile data storage area SRAM
  • Available with 224KB program memory CodeFlash (zero-wait application area + non-zero wait data area)
  • 28KB BootLoader
  • 128B non-volatile system configuration memory
  • 128B user-defined memory
• Power management and low-power consumption:
  • System power supply VDD: 3.3V - Independent power supply for GPIO unit VI/O: 3.3V
  • Low-power mode: Sleep, Stop, Standby
  • VBAT independently powers RTC and backup register
• Clock & Reset:
  • Built-in factory-trimmed 8MHz RC oscillator
  • Built-in 40 KHz RC oscillator
  • Built-in PLL, optional CPU clock up to 144MHz
  • High-speed external 3~25MHz oscillator
  • Low-speed external 32.768 KHz oscillator
  • Power on/down reset, programmable voltage detector
• Real-time clock (RTC): 32-bit independent RTC timer
• 1 group of 8-channel general-purpose DMA controller
  • 8 channels, support ring buffer
  • Support TIMx/ADC /USART/I2C/SPI
• 2 groups of OPAs and comparators: connected with ADC and TIMx
• 2 groups of 12-bit ADC
  • Analog input range: VSSA ~ VDDA
  • 16 external signals + 2 internal signals
  • On-chip temperature sensor
  • Dual ADC conversion mode
• 16-channels Touch-Key detection
• Multiple timers:
  • 1 × 16-bit advanced-control timers, with dead zone control and emergency brake; can offer PWM complementary output for motor control
  • 3 × 16-bit general-purpose timers, provide input capture/output comparison/PWM/pulse counting/incremental encoder input
  • 1 × 32-bit general-purpose timer (for CH32V203RBx)
  • 2 watchdog timers (independent watchdog and window watchdog)
  • SysTick: 64-bit counter
• Communication interfaces:
  • 4 USART interfaces
  • 2 I2C interfaces (support SMBus/PMBus)
  • 2 SPI interfaces
  • USB2.0 full-speed device interface (full-speed and low-speed)
  • USB2.0 full-speed host/device interface
  • CAN interfaces (2.0B active)
• Fast GPIO port: 37 I/O ports, mapping 16 external interrupts
• Security features: CRC unit, 96-bit unique ID
• Debug mode: 2-wire serial debug interface (SDI)
• Package: LQFP, QFN, TSSOP or QSOP