Chengdu Ebyte Electronic Technology Co.,Ltd.
E78-470LN22S User Manual
Copyright ©2012–2021
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Chengdu Ebyte Electronic Technology Co.,Ltd.
6
3. Mechanical properties
3.1 E78-470LN22S Dimensions
3.2 Pin definition
No.
Name
Direction
Function
1
GND
Ground wire, connected to power reference ground
2
VCC
Power supply, range 2.5-3.7v (external ceramic filter
capacitor is recommended)
3
SETB
Low power wake-up pin
4
DIO1
Input/output
NC (reserved pin)
5
BUSY
Input/output
NC (reserved pin)
6
I2C_SDA
Input/output
NC (reserved pin)
7
I2C_SCL
Input/output
NC (reserved pin)
8
UART_CTS
Input/output
NC (reserved pin)
9
UART_RTS
Input/output
NC (reserved pin)
10
GND
Ground wire, connected to power reference ground
11
ANT
Antenna interface, stamp hole (50 ohm characteristic
impedance)
12
GND
Ground wire, connected to power reference ground