CH9434 Description
Power ground The internal power supply of the chip needs to be externally connected to a decoupling capacitor if short-circuited with other VDD. The capacitance value is remended not to be less than 0.1uF. Internal power supply of the chip, short-circuited with other VDD.
CH9434 Key Features
- Operating voltage: 3.3V
- Support munication baud rate setting, with the baud rate range of 1200-4000000bps. -UART has an independent FIFO buffer
- Four fully independent UARTs, patible with 16C550 and enhanced
- Support 5/6/7/8 data bits and 1/2 stop bits. -UARTs support odd, even, no parity, blank 0, mark 1 and other verification
- Support the monly used MODEM munication signals RTS, DTR, DCD, RI, DSR and CTS
- Provide half-duplex RS485 receive/transmit enable pin
- The maximum rate of SPI is 16Mbit/s
- Support low power sleep mode, which can be awakened via SPI interface
- Built-in clock, which can be provided by the optional external crystal oscillator
- Provide configurable GPIO functions