Ebyte E43-900T13S3 User Manual

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Ebyte E43-900T13S3 User Manual Manual pdf 8 page image

Chengdu Ebyte Electronic Technology Co., Ltd. E43-900T13S3 User manualCopyright ©2012–2019，Chengdu Ebyte Electronic Technology Co., Ltd. 73. Size and pin definitionNo. Name Direction Function1 GND Ground wire2 GND Ground wire3 GND Ground wire4 GND Ground wire5 M0 Input（weak pull-up） Work with M1 & decide the four operating modes.Floating is not allowed, can be ground.6 M1 Input（weak pull-up） Work with M0 & decide the four operating modes.Floating is not allowed, can be ground.7 RXD Input TTL UART inputs, connects to external TXD output pin. Can be configuredas open-drain or pull-up input. See details in parameters setting.8 TXD Output TTL UART outputs, connects to external RXD input pin. Can be configuredas open-drain or push-pull output. See details in parameters setting.9 AUX OutputTo indicate module’s working status & wakes up the external MCU.During the procedure of self-check initialization, the pin outputs lowlevel. Can be configured as open-drain output or push-pull output(floating is allowed).10 VCC Power supply reference: 2.3V~5.5V DC11 GND Ground wire12 NC13 GND Ground wire14 NC15 NC16 NC