AcSiP S76S Manual page 9

GND
GND
RF_ANT
GND
GND
PA1 for RF RXTX Switch
GND
None
GND
None
GND
None
VDD_3.3V
VDD_3.3V
PA8 for USART1_CK/I2C3 SCL
PA10 for USART1 RX/I2C1 SDA
PA9 for USART1 TX/I2C1 SCL
PA11 for USART1 CTS/SPI1
MISO/USB DM
PA12 for USART1 RTS/SPI1 MOSI
PA13 for SWDIO
PA14 for SWCLK
PC10 for USART4 TX
PC11 for USART4 RX/ADC
PC12 for USART5 TX/USART4 CK
PD2 for USART5 RX
PB5 for USART5 RTS/SPI1 MOSI
PB6 for USART1 TX/ I2C1 SCL
PB7 for I2C1 SDA/USART1
RX/USART4 CTS
BOOT0
PB8 for I2C1 SCL
GND
GND
2.3 Usable Interface of EK-S76/78SXB board
2.3.1 RF Antenna
A general RF Antenna connector is compatible with SMA male
specification (BNC female to SMA female).
2.3.2 I2C
One I²C bus interfaces can operate in master and slave modes. They can
support the standard mode (up to 100 kHz), fast mode (up to 400 kHz) and
fast plus mode (up to 1MHz). and it support DMA mode to reduce CPU
overload.
2.3.3 VDD33
A 3.3V pin that is provided by a 5V-to-3V regulator (LDO), and it
provides the power supply to MCU and SX1276.
pin31 GND
pin32 GND
pin33 No connection
pin34 GND
pin35 GND
pin36 PA1_RF_FEM_CPS
pin37 GND
pin38 No connection
pin39 GND
pin40 No connection
pin41 GND
pin42 No connection
pin43 VDD33
pin44 VDD33
pin45 PA8_USART1_CK
pin46 PA10_USART1_RX
pin47 PA9_USART1_TX
pin48 PA11_USART1_CTS
pin49 PA12_USART1_RTS
pin50 PA13_SWDIO
pin51 PA14_SWCLK
pin52 PC10
pin53 PC11
pin54 PC12
pin55 PD2
pin56 PB5
pin57 PB6_SCL
pin58 PB7_SDA
pin59 BOOT0
pin60 PB8_IO_LED_FCT
pin61 GND
pin62 GND
S76S/S78S SDK Manual
Product
Name
C
Version
Doc No
May 3, 2017
Date
8 of 33
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