Ebyte E34-2G4H27D User Manual
Also see for E34-2G4H27D: ManualUser manual
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Chengdu Ebyte Electronic Technology Co., Ltd E34-2G4H27D User ManualCopyright ©2012–2019，Chengdu Ebyte Electronic Technology Co., Ltd 53 Size and pin definitionNO Pin Pin direction Pin application1 M0 Input（weak pull-up）Work with M1 & decide the four operating modes.Floating is not allowed, can be ground.2 M1 Input（weak pull-up）Work with M0 & decide the four operating modes.Floating is not allowed, can be ground.3 RXD Input TTL UART inputs, connects to external (MCU, PC) TXD output pin. Can beconfigured as open-drain or pull-up input.4 TXD Output TTL UART outputs, connects to external RXD (MCU, PC) input pin. Can beconfigured as open-drain or push-pull output5 AUX OutputTo indicate module’s working status & wakes up the external MCU. During theprocedure of self-check initialization, the pin outputs low level. Can be configuredas open-drain output or push-pull output (floating is allowed).6 VCC Power supply 3.3V-5.5V DC7 GND Input Ground8 Fixing hole Input Fixing hole9 Fixing hole Fixing hole10 Fixing hole Fixing hole |
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