CH32V307WCU6

Part: CH32V307VCT6 — WCH (WCH-IC)

Type: 32-bit RISC-V Microcontroller

Description: Industrial-grade general-purpose microcontroller based on QingKe RISC-V4F core, operating at up to 144 MHz with 480 KB CodeFlash, up to 128 KB SRAM, and extensive peripherals including USB2.0 high-speed, Gigabit Ethernet, and dual 12-bit ADCs/DACs.

Operating Conditions:

• Supply voltage: 3.3V
• Operating temperature: -40 to +85 °C
• CPU main frequency: Max 144MHz

Absolute Maximum Ratings:

Key Specs:

• Core: QingKe 32-bit RISC-V4F
• CPU main frequency: Max 144MHz
• Program memory (CodeFlash): Up to 480KB (zero-wait + non-zero-wait)
• Volatile data storage (SRAM): Up to 128KB
• ADC: 2 units, 12-bit, 16 external channels + 2 internal signals
• DAC: 2 units, 12-bit
• USB: USB2.0 full-speed host/device, USB2.0 high-speed host/device (built-in 480Mbps PHY)
• Ethernet: Gigabit Ethernet MAC controller, 10M PHY transceiver

Features:

• Single-precision floating-point unit (FPU)
• Fast programmable interrupt controller (PFIC)
• Multiple low-power modes: Sleep, Stop, Standby
• Built-in 8MHz RC oscillator and 40kHz RC oscillator
• 2 groups of 18-channel general-purpose DMA controllers
• 4 groups of 16-bit advanced timers for motor control
• 8 USART interfaces (including 5 UARTs)
• 2 I2C interfaces (support SMBus/PMBus)
• 3 SPI interfaces (SPI2, SPI3 for I2S2, I2S3)
• 2 CAN interfaces (2.0B active)
• SDIO host interface
• Digital video port (DVP)
• FSMC memory interface
• 80 GPIO ports, mapping 16 external interrupts
• CRC unit, 96-bit unique ID
• 2-wire serial debug interface (SDI)

Applications:

Package:

• LQFP100

CH32V307WCU6 Pinout

Package: QFN-68 (8×8)

Notes

The pin diagram provided shows only the right side of the QFN-68 package (pins 0–17 and 34–51 approximately). The left side of the package diagram (covering pins 18–33 and 52–67) is not clearly legible in the provided image. Pin numbers 18–33 and 54–67 could not be reliably extracted from the source material and are marked as unknown. To obtain a complete pinout for all 68 pins of the CH32V307WCU6, a higher-resolution or complete pin diagram is required. The pins shown are color-coded in the diagram: red indicates @VDD power, black indicates @VIO power, and blue indicates @VDD & VBAT power.

Table 4-41 ADC characteristics

Table 4-41 ADC characteristics

V3.4 78

Note: Above parameters are guaranteed by design.

Formula: Maximum RAIN

The above formula is used to determine the maximum external impedance so that the error can be less than 1/4 LSB. Where N=12 (representing 12-bit resolution).

Table 4-42 Maximum RAIN when fADC = 14MHz

• T S (cycle) t S (us) Maximum R AIN (kΩ)
• 1.5 0.11 0.4
• 7.5 0.54 5.9
• 13.5 0.96 11.4
• 28.5 2.04 25.2
• 41.5 2.96 37.2
• 55.5 3.96 50
• 71.5 5.11 Invalid
• 239.5 17.1 Invalid

Table 4-43 ADC error

Cp represents the parasitic capacitance on the PCB and the pad (about 5pF), which may be related to the quality of the pad and PCB layout. A larger Cp value will reduce the conversion accuracy, the solution is to reduce the f ADC value.

V3.4 79

Figure 4-29 ADC typical connection diagram

Figure 4-30 Analog power supply and decoupling circuit reference

Stresses at or above the absolute maximum ratings listed in the table below may cause permanent damage to the device.

Table 4-1 Absolute maximum ratings

Table 4-1 Absolute maximum ratings

V3.4 51

No ordering information table or specific ordering codes were found in the provided datasheet section. The section only mentions the TSSOP20 package type in the context of a figure.