WCH CH32V208WBU6

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. CH32V208 is equipped with V4C core, which adds memory protection function and reduces hardware division cycle. In terms of product features, it supports 144MHz main frequency zero-wait operation. The series integrates 2Mbps low-power Bluetooth BLE communication module, 10M Ethernet MAC+PHY module, USB2.0 full-speed device + host/device interface, CAN controller, etc.

• 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 480KB 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 32MHz 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 controllers:
  • 8 channels, support ring buffer
  • Support TIMx/ADC /USART/I2C/SPI
• 2 groups of OPAs and comparators: connected with ADC and TIMx
• 1 group 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
• Timers:
  • 1 16-bit advanced-control timer, 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
  • 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
  • 1 CAN interfaces (2.0B active)
  • Built-in 10M PHY transceiver
  • Low-power Bluetooth BLE5.3
  • Fast GPIO port
  • 53 I/O ports, with 16 external interrupts
• Security features: CRC unit, 96-bit unique ID
• Debug mode: 2-wire serial debug interface (SDI)
• Package: LQFP or QFN