Chengdu Ebyte Electronic Technology Co.,Ltd
E78-400M22S user manual
Copyright ©2012–2019
，
Chengdu Ebyte Electronic Technology Co,;Ltd
5
10
GND
Ground wire, connected to the power reference ground
11
ANT
Antenna interface, stamp hole (50 ohm characteristic impedance)
12
GND
Ground wire, connected to the power reference ground
13
GND
Ground wire, connected to the power reference ground
14
GND
Ground wire, connected to the power reference ground
15
GND
Ground wire, connected to the power reference ground
16
XRES
Input
External reset pins
17
ADC_IN
Input
ADC input pin
18
AUX
Input/output
MCU GPIO
19
SETA
Input/output
MCU GPIO
20
UART_RX
Input/output
UART RX pin
21
UART_TX
Input/output
UART TX pin
22
SWD_DATA
Input/output
SWD Data pins
23
SWD_CLK
Input/output
SWD Clock pin
24
GND
Ground wire, connected to the power reference ground
25
SPI_MISO
Input/output
SPI MISO test point, internally connected, cannot be used as external SPI
26
SPI_NSS
Input/output
SPI NSS test point, internally connected, cannot be used as an external SPI
27
SPI_MOSI
Input/output
SPI MOSI test point, internally connected, cannot be used as an external SPI
28
SPI_SCK
Input/output
SPI SCK test point, internally connected, cannot be used as external SPI
4.Development
No.
Key word
Remark
1
Burn the
connection
Module is SoC module, with GPIO port, program download using ASR official test board;
2
Burn the
connection
Connect XRES, SWD_CLK, SWD_DATA, GND, 3V3 of the test board on the official website with
XRES, SCLK, SDAT, GND and 3V3 of the downloader respectively, and ensure that both green lights
are on before downloading. If there is any exception, please press this button to ensure that both green
lights are on. (for details, please refer to the official ASR6501 burning instructions)
