CH9102

USB UART bridge

CH9102 is a USB-to-serial port converter chip that supports full-speed USB and provides UART interface with various flow control features.

In stock

Specifications

Pin	Name	Functions	Notes
7	VDD5	POWER	Power supply voltage input
2,0	3	POWER	Connected to VIO internally
6	6, 22	POWER	Ground, connected to USB bus ground directly
9	RST	GPIO	External reset input, active low
8	VBUS	POWER	USB VBUS status detection input
21	TXD	UART	Transmit data output
4	5	UART	Receive data input
8	VBUS	POWER	USB VBUS status detection input
21	TXD	UART	Transmit data output
20	RXD	UART	Receive data input
18	CTS	GPIO	Clear to send, active low
22	DSR	GPIO	Data set ready, active low
1	RI	GPIO	Ring indicator, active low
24	DCD	GPIO	Data carrier detect, active low
23	DTR	GPIO	Data terminal ready, active low
19	RTS	GPIO	Request to send, active low
17	SUSPEND#	POWER	USB suspend state output, active low
12	SUSPEND	POWER	USB suspend state output, active high
11	WAKEUP/GPIO3	GPIO	USB wake-up event input, low active
16	TNOW/GPIO2	GPIO	Serial port sending status output, active high
15	RXS/GPIO1	GPIO	Receive data status output
14	TXS/GPIO0	GPIO	Transmit data status output
20	GPIO6	GPIO	General GPIO, input or output
21	GPIO5	GPIO	General GPIO, input or output
13	GPIO4	GPIO	General GPIO, input or output

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CH9102

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