Ebyte E220-230T30D, Руководство пользователя

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Chengdu Ebyte Electronic Technology Co., Ltd. E220-400T30D User Manual
Copyright ©2012–2020
，
Chengdu Ebyte Electronic Technology Co., Ltd. 6
3. Size and Pin Definition
Figure 3-1 Mechanical size and pin definition
Table 3-1 Pin definition table
Pin No. Pin Name Pin Direction Pin Function
1 M0
Input
（
weak pull-up
）
Work with M1 to decide 4 working modes of module (not float, if not used,
could be grounded).
2 M1
Input
（
weak pull-up
）
Work with M0 to decide 4 working modes of module (not float, if not used,
could be grounded).
3 RXD Input TTL UART inputs, connects to external TXD output pin.
4 TXD Output TTL UART outputs, connects to external RXD input pin.
5 AUX Output
Used to indicate the working status of the module; wakes up the external
MCU, and outputs low level during power-on self-check initialization; (can
be left floating)
6 VCC Input Voltage range: 3.0
～
5.5V DC
7 GND Input Ground
8 Fixed hole - Fixed hole
9 Fixed hole - Fixed hole
10 Fixed hole - Fixed hole
11 Fixed hole - Fixed hole