Github collect most sample code, but comments in chinese.
- CH559 has more features and space inside.
- Support USB hub, two USB transceiver, one is normal speed (female A USB pin “DP DM” and micro USB), one is high speed (On board marked “HS USB, pin HP HM”).
- All lead out pins.
- On board power led, four programming leds IO P1.4-P1.7.
- Fuse protect on input pins 3.3V and 5V.
- For enter into flash bootloader mode, hold down PROG pin, and switch ON/OFF.
- Jumper select 3.3V / 5V, both can work, IC has internal regulator.
- Lead out seperate serial UART port, logice level complaint.
- On board optional crystal space.