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Update README.md

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...@@ -71,8 +71,8 @@ If the C/C++ language server clangd is unable to find `ch32v003fun.h`, the examp ...@@ -71,8 +71,8 @@ If the C/C++ language server clangd is unable to find `ch32v003fun.h`, the examp
## Quick Reference ## Quick Reference
* **REQUIRED** for programming/debugging: `SWIO` is on `PD1`. Do not re-use PD1 for multiple functions. * **REQUIRED** for programming/debugging: `SWIO` is on `PD1`. Do not re-use PD1 for multiple functions.
* Optional (not needed, can be configured as output if fuse set): `NRST` is on `PD7`. By default from factor, is GPIO. * **OPTIONAL** `NRST` is on `PD7`. Not needed, defaults as GPIO in some configurations.
* UART TX (optional) is on: `PD5`. We recommend using SWIO for `printf` debugging. * **OPTIONAL** UART `TX` is on: `PD5`. We recommend using SWIO for `printf` debugging.
![ch32v003a4m6](https://raw.githubusercontent.com/Tengo10/pinout-overview/main/pinouts/CH32v003/ch32v003a4m6.svg) ![ch32v003a4m6](https://raw.githubusercontent.com/Tengo10/pinout-overview/main/pinouts/CH32v003/ch32v003a4m6.svg)
![ch32v003f4p6](https://raw.githubusercontent.com/Tengo10/pinout-overview/main/pinouts/CH32v003/ch32v003f4p6.svg) ![ch32v003f4p6](https://raw.githubusercontent.com/Tengo10/pinout-overview/main/pinouts/CH32v003/ch32v003f4p6.svg)
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