User's Manual

16
WT11 PIN description
The PIN description of WT11 is shown in the table below.
No. Pin name I/O Description
1 GND GND Ground
2 3V3 VDD Power supply connection
3 PIO2 I/O Programmable I/O lines
4 PIO3 I/O Programmable I/O lines
5 NRTS O UART RTS (internal pull-up, active low)
6 RXD I UART RX (internal pull down)
7 PCMO O Synchronous 8 kbps data out (internal Pull down)
8 USB_D+ A USB data plus (Internal 22 ohm serial resistor)
9 USB_D- A USB data minus (Internal 22 ohm serial resistor)
10 NCTS I UART CTS (internal pull down, active low)
11 PCMI I Synchronous 8 kbps data in (internal pull-down)
12 PCMC I/O Synchronous data clock (internal pull-down)
13 PCMS I/O Synchronous data strobe (internal pull-down)
14 GND GND Ground
15 GND GND Ground
16 3V3 VDD Power supply connection
17 RES I Reset input (active high)