Neoway N10 - 3.3 USB

N10_Hardware_User_Guide
Copyright © Neoway Technology Co., Ltd.
22
Figure 3-14 Recommended level shifting circuit 2
C1 220pF
TXD
R1 39K
R2 47K
R3 4.7K
VIO28
R4 10K
C2 220pF
R5 47K
R6 4.7K
Q1
Q2
MCU_URXD
VCC_IO
C1 220pF
RXD
R1 22K
R2 10K
R3 4.7K
VIO28
R4 10K
C2 220pF
R5 47K
R6 4.7K
Q1
Q2
MCU_UTXD
Avoid data transmitted at UART when the module is powered on and send data to the UART 3 seconds
after the module is powered on so that the module would not respond wrongly.
3.3 USB
Table 3-3 USB interface
Pin
Signal
I/O
Function
Remarks
11
VBUS
AI
USB voltage check
4.3 V < VBUS < 7 V, typical value: 5 V
12
USB_DM
DIO
USB interface
differential data line
13
USB_DP
DIO