Custom 51 MCU minimum system board integrated USB download STC90C52RC/89C52RC instead of C51 S52 Manufacturer

2. CH340 has good compatibility and supports WINXP, WIN7, WIN8, WIN10 systems

3. Through CH340 core: USB to TTL serial communication

4. The pin arrangement is fully compatible with the in-line 40-pin 89C52 and 89S52 arrangement

5.CH340T full-speed USB device interface, compatible with USB V2.0

6. The serial port application program under the Windows operating system on the computer side is fully compatible and does not need to be modified.

7. Support baud rate from 2400bps to 2M.

Additional Keil C51 sample program for STC90C series

Additional Chinese data for STC90C series