Chengdu Ebyte Electronic Technology Co., Ltd.
E103-W03 _User Manual _EN_V1.1
Copyright ©2012–2022, Chengdu Ebyte Electronic Technology Co., Ltd
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5
Chapter 3 Mechanical Dimensions and Pin Definitions
Pin number
Pin definition
I/O
Function and Instructions
1
、
8
、
9
、
11
、
12
、
13
、
16
、
17
、
28
、
29
、
44
GND
power ground
2
GPIO26
IO
Common IO port
3
GPIO27
IO
Common IO port
4
RST
I
Module reset pin, low level reset, low level duration greater than or equal
to 2ms.
5
SOP2
I
Programming emulation mode selection. The SOP2 pin has a built-in
2.4K pull-down resistor; when in use, an external pull-up resistor 100R is
required to pull the pin level high. Normal operation is low.
6
SOP1
I
Programming emulation mode selection. When in use, an external
pull-up resistor 1M is required to pull the pin level high.
Normal
operation is low.
7
SOP0
I
Programming emulation mode selection. The SOP0 pin has a built-in
100K pull-down resistor; when in use, an external pull-up resistor 10K is
required to pull the pin level high. Normal operation is low.
10
VCC
Device power supply VDC: 2.4V~3.6V (above 300mA)
