Seco Smarc LEVY User Manual page 36

SER1_RX: UART #4 Interface, Serial data Receive (input) line, +1.8V_RUN electrical level with a 100kΩ pull-up resistor
SER2_TX: UART #3 Interface, Serial data Transmit (output) line, +1.8V_RUN electrical level
SER2_RX: UART #3 Interface, Serial data Receive (input) line, +1.8V_RUN electrical level with a 100kΩ pull-up resistor
SER2_RTS#: UART #3 Interface, Handshake signal, Request to Send (output) line, +1.8V_RUN electrical level
SER2_CTS#: UART #3 Interface, Handshake signal, Clear to Send (Input) line, +1.8V_RUN electrical level with a 100kΩ pull-up resistor.
SER3_RX: UART #1 Interface, Serial data Receive (input) line, +1.8V_RUN electrical level with a 100kΩ pull-up resistor
SER3_TX: UART #1 Interface, Serial data Transmit (output) line, +1.8V_RUN electrical level
Please consider that interface is at +1.8V_RUN electrical level; therefore, please evaluate well the typical scenario of application. If there isn't any explicit need of
interfacing directly at +1.8V_RUN level, for connection to standard serial ports commonly available (like those offered by common PCs, for example) it is mandatory
to include an RS-232 transceiver on the carrier board.
LEVY
LEVY User Manual - Rev. First Edition: 1.0 - Last Edition: 1.0 - Author: S.O. - Reviewed by N.P. - Copyright © 2022 SECO S.p.A.
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