Neoway N75 - Uart; Figure 3-16 Reference Design of UART Connection (with Flow Control); Figure 3-17 Reference Design of UART Connection (Without Flow Control)

N75
Hardware User Guide
Copyright © Neoway Technology Co., Ltd
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3.3.4 UART
Signal
Pin
I/O
Function
Remarks
UART5_TXD
46
DO
UART5 data transmitting
Used for data transmission
UART5_RXD
47
DI
UART5 data receiving
Used for data transmission
N75 provides one UART interface. To support hardware flow control, multiplex pin 51 and pin 52 as
UART5_CTS and UART5_RTS. UART interfaces support 4 Mbps at most. The level at the interfaces
1.8V. To use multiple UART interfaces, see Section 3.7 MUX Interfaces. Figure 3-16 and Figure 3-17
show the reference designs of the UART interfaces.
Figure 3-16 Reference design of UART connection (with flow control)
UART3_RXD
UART3_TXD
MCU_TXD
MCU_RXD
GND GND
N75
module
Client
UART3_CTS
UART3_RTS
MCU_RTS
MCU_CTS
Figure 3-17 Reference design of UART connection (without flow control)
UART5_RXD
UART5_TXD
MCU_TXD
MCU_RXD
GND GND
N75
module
Client
Schematic Guidelines
⚫
Note the match of signals.