SIM868 mini Development Board for 2G/GNSS/GPS applications Subtotal: $ 12.9
Development Boards
CH32V003 Mini Development Board
- Mini Development Board For CH32V003F4P6 From Wch
$ 1.5
CompareBoard Description
CH32V003 series is an industrial-grade general-purpose microcontroller designed based on QingKe RISC-V2Acore, which supports 48MHz system main frequency in the product function. The series features wide voltage,single line debug, low-power consumption and ultra-small package. It provides commonly used peripheralfunctions, built-in 1 group of DMA controller, 1 group of 10-bit analog-to-digital conversion ADC, 1 group ofop-amp comparator, multiple timers, standard communication interfaces such as USART, I2C, SPI, etc. The rated operating voltage of the product is 3.3V or 5V, and the operating temperature range is -40℃～85℃ industrial-grade.
Microcontroller
QingKe V2 series microprocessor is a 32-bit general-purpose MCU based on the RISC-V instruction set (RV32I subset RV32E). It uses only 16 general-purpose registers and a streamlined structure optimized for deep embedded scenarios. The V2 series supports the RV32EC extension; the V2C variant adds hardware multiplication. Custom XW extensions include Hardware Prologue/Epilogue (HPE), Vector Table Free (VTF), a simplified 1-wire/2-wire serial debug interface (SDI), and support for the WFE instruction.
Features
| Feature | Description |
|---|---|
| Instruction Set Architecture (ISA) | RV32EmC |
| Pipeline | 2-stage |
| Branch prediction | Static branch prediction |
| Interrupts | Supports up to 256 interrupts (including exceptions) and supports VTF |
| Hardware Prologue/Epilogue (HPE) | Supports 2 levels of HPE |
| Low-power modes | Sleep and Deep sleep; supports WFI and WFE sleep methods |
| Extended instructions | Supports half-word and byte operation compression instructions |
| Debug | 1-wire/2-wire SDI and standard RISC-V debug |
Specifications
- Core: 32-bit RISC-V (RV32EmC / RV32EC for extensions)
- Registers: 16 general-purpose registers
- Pipeline: 2-stage
- Interrupts: Up to 256 (including exceptions)
- Low-power: Sleep, Deep sleep; WFI/WFE support
- Debug interfaces: 1-wire/2-wire SDI, standard RISC-V debug
- Optional: V2C supports hardware multiplication
Applications
- Deeply embedded systems requiring a minimal-footprint RISC-V core
- Low-power MCU applications (battery-powered sensors, wearables)
- Systems needing compact interrupt handling and fast wake/sleep transitions
- Designs that benefit from simplified debug (1-wire/2-wire SDI) and custom instruction extensions (HPE, VTF, XW)
Development Board Configuration
The detailed assignment of the peripheral interfaces on the Development board is as follows:
| NO. | Name | Silkscreen | Comment |
| 1 | Programing pin | – | You can program the development board with the one-wire protocol. |
| 2 | 11 pin | – | Ch32v Output pin |
| 3 | 3 pin | – | select voltage power supply 3.3V,5V |
The Development board has 2 functional indication LEDs, as follows:
- Connect to PC0(10) pin wch.
- Power indication LED.
Components
Pinout
Pin Describtion
| Pin No. | Pin name | Pin type (1) | I/O structure | Main function (after reset) | Default alternate function | |||
| – | – | 0 | – | VSS | P | VSS | – | – |
| 8 | 1 | 18 | 8 | PD4 | I/O | PD4 | UCK/T2CH1ETR/A7/
OPO |
TICH4ETR_(1) |
| 9 | 2 | 19 | 8 | PD5 | I/O | PD5 | UTX/A5 | T2CH4_/URX_ |
| 10 | 3 | 20 | 1 | PD6 | I/O | PD6 | URX/A6 | T2CH3_/UTX_ |
| 11 | 4 | 1 | – | PD7 | I/O | PD7 | NRST/T2CH4/OPP1 | UCK_ |
| 12 | 5 | 2 | 1 | PA1 | I/O | PA1 | T1CH2/A1/OPN0 | OSCI |
| 13 | 6 | 3 | 3 | PA2 | I/O | PA2 | TICH2N/A0/OPP0 | OSCO/AETR2_ |
| 14 | 7 | 4 | 2 | VSS | P | VSS | – | – |
| – | 8 | 5 | – | PD0 | I/O | PD0 | TICH1N/OPN1 | SDA_/UTX_ |
| 15 | 9 | 6 | 4 | VDD | P | VDD | – | – |
| 16 | 10 | 7 | – | PC0 | I/O | PC0 | T2CH3 | NSS_/UTX_/T1CH3_ |
| 1 | 11 | 8 | 5 | PC1 | I/O/FT | PC1 | SDA/NSS | T1BKIN_/T2CH4_
T2CH1ETR_/URX_ |
| 2 | 12 | 9 | 6 | PC2 | I/O/FT | PC2 | SCL/URTS/T1BKIN | AETR_/T2CH2_/T1ET
R_ |
| 3 | 13 | 10 | – | PC3 | I/O | PC3 | T1CH3 | T1CH1N_/UCTS_ |
| 4 | 14 | 11 | 7 | PC4 | I/O | PC4 | T1CH4/MCO/A2 | T1CH1CH2N_(2) |
| – | 15 | 12 | – | PC5 | I/O/FT | PC5 | SCK/T1ETR | T2CH1ETR_/SCL_
UCK_/T1CH3_ |
| 5 | 16 | 13 | – | PC6 | I/O/FT | PC6 | MOSI | T1CH1CH3N_(3)
UCTS_/SDA_ |
| 6 | 17 | 14 | – | PC7 | I/O | PC7 | MISO | T1CH2_/URTS_/T2CH
2_ |
| 7 | 18 | 15 | 8 | PD1 | I/O | PD1 | SWIO/T1CH3N/AETR
2 |
SCL_/URX_ |
| – | 19 | 16 | – | PD2 | I/O | PD2 | T1CH1/A3 | T2CH3_/T1CH2N_ |
| – | 20 | 17 | – | PD3 | I/O | PD3 | A4/T2CH2/AETR/UCT
S |
T1CH4_ |
Dimentions
Getting Started Preparation
To program this series of RISC_V microcontrollers, we use the MounRiver Studio software, abbreviated as MRS.
To download this IDE, you can visit the MounRiver Studio website at http://www.mounriver.com/download
This IDE has the ability to program WCH chips internally; but if you want to use external software for programming, you can use the WCH-LinkUtility software, which can be downloaded from the WCH company website. At https://www.wch.cn/downloads/WCH-LinkUtility_ZIP.html You can use WCH–Link.
To connect the programmer to the micro, the GND -> GND and SWDIO -> SWDIO and +5 -> VDD pins must be connected together. If the circuit connected to the micro draws a small current, you can supply the IC power from the programmer itself.
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