CH32V002 is the successor to the popular CH32V003: the same price and pin layout, but twice the RAM (4 kB) and more peripheral remap options.
CH32V002F4P6 in the TSSOP20 package is pin-compatible with the CH32V003F4P6 – boards and circuits carry over unchanged, except that the CH32V002 has no op-amp.
Specifications
- RISC-V (QingKe) at 48 MHz
- 16 kB flash, 4 kB SRAM
- 18 GPIO, ADC
- USART, I2C, SPI, timers, PWM
- 3.3 V or 5 V supply
- single-wire programming (SWIO on PD1)
- TSSOP20 package
It is programmed with the WCH-LinkE. The table lists every remap option for each pin – the V002 has more of them than the V003.
Pinout and pin table
Hover over a pin in the diagram or a table row; use the filter to highlight a bus. You can download the pinout as PNG or SVG.
License: CC BY 4.0 · How to credit
| Pin | Name | Direction | UART | I2C | SPI | PWM | ADC | Remap | Note |
|---|---|---|---|---|---|---|---|---|---|
| 1 | PD4 | input/output | T2CH1ETR | A7 | 1: T1ETR; 3: T1CH4; 4: SCK, T1ETR; 5: T1ETR; 6: T1ETR; 7: T2CH2; 9: RTS | ||||
| 2 | PD5 | input/output | TX | A5 | 1: RX; 3: T2CH4; 4: MISO; 9: CTS | ||||
| 3 | PD6 | input/output | RX | A6 | 1: TX; 3: T2CH3; 4: MOSI | ||||
| 4 | PD7 | input/output | T2CH4 | 1: T2CH4; 4: CTS; 5: CTS | Reset (NRST) by default; usable as GPIO only after switching in the option bytes (RST_MODE = 11) | ||||
| 5 | PA1 | input/output | T1CH2 | A1 | 1: T1CH2; 5: SCK, T2CH2; 6: T2CH2; 8: RX; 9: T1CH2 | Krystal (OSCI) | |||
| 6 | PA2 | input/output | T1CH2N | A0 | 1: ADC trigger (ADC_IETR), T1CH2N; 4: T1CH2N; 5: MOSI, T1CH2N, T2CH3; 6: T1CH2N, T2CH3; 7: T2CH3; 9: T1CH3 | Krystal (OSCO) | |||
| 7 | VSS | – | |||||||
| 8 | PD0 | input/output | T1CH1N | 1: SDA, T1CH1N; 2: TX; 4: T1CH3N; 5: T1CH3N; 6: T1CH3N | |||||
| 9 | VDD | input | Power 3.3 V or 5 V | ||||||
| 10 | PC0 | input/output | T2CH3 | 1: NSS, T2CH3; 2: T1CH3; 3: MOSI, TX; 4: T2CH1ETR; 7: T1CH1N; 9: T1CH1N | |||||
| 11 | PC1 | input/output | SDA | NSS | 1: T2CH1ETR; 2: T1BKIN, T2CH4; 3: T1BKIN, T2CH1ETR, RX; 4: T2CH2; 5: NSS; 7: T1CH2N; 9: T1CH2N | ||||
| 12 | PC2 | input/output | SCL | 1: ADC trigger (ADC_RETR), T1BKIN; 2: T2CH2, RTS; 3: T1ETR; 7: T1CH3N; 9: T1CH3N | USART RTS; T1BKIN | ||||
| 13 | PC3 | input/output | T1CH3 | 1: T1CH3; 2: T1CH1N, CTS; 3: T1CH1N; 4: T2CH3; 5: T1CH3 | |||||
| 14 | PC4 | input/output | T1CH4 | A2 | 1: T1CH4; 2: NSS, T1CH2N; 3: T1CH1; 6: NSS; 7: T1CH1; 8: T1CH1; 9: RX | clock output (MCO) | |||
| 15 | PC5 | input/output | SCK | 1: SCK; 2: SCL, T1ETR, T2CH1ETR; 3: T1CH3; 6: TX; 7: T1CH2; 8: T1CH2 | T1ETR | ||||
| 16 | PC6 | input/output | MOSI | 1: MOSI, CTS; 2: SDA, T1CH1; 3: T1CH3N, CTS; 6: RX; 7: T1CH3; 8: T1CH3 | |||||
| 17 | PC7 | input/output | MISO | 1: MISO, RTS; 2: T1CH2; 3: T1CH2, T2CH2, RTS; 6: MISO, CTS; 7: T1CH4, CTS; 8: T1CH4 | |||||
| 18 | PD1 | input/output | T1CH3N | 1: SCL, T1CH3N; 2: T1CH3N, RX; 4: SDA, T1CH4, TX; 5: T1CH4, RX | Programming and debugging (SWIO, single wire – WCH-LinkE); ADC trigger (ADC_IETR) | ||||
| 19 | PD2 | input/output | T1CH1 | A3 | 1: T1CH1; 2: SCK, T2CH3; 3: T1CH2N; 8: CTS | ||||
| 20 | PD3 | input/output | T2CH2 | A4 | 1: T2CH2; 2: MOSI, T1CH4; 4: NSS; 7: T2CH1ETR; 8: RTS | USART CTS; ADC trigger (ADC_RETR) |
What to watch out for
- PD1 is the SWIO programming pin – leave it free.
- PD7 is reset (NRST) from the factory – free it up as GPIO in the option bytes (RST_MODE = 11).
- Logic levels follow the supply voltage (3.3 V or 5 V).
- With an external crystal, PA1 and PA2 are taken.
CH32V articles on chiptron.eu/
These chiptron.eu/ articles cover the CH32V chips:
- CH32V003 in the Arduino IDE and on Linux – WCH-LinkE programmer, openOCD and the CH32fun alternative
More pinouts
See all pinouts on the Pinouts page.