Product Info

Smart LTE Module Series
SC20 Hardware Design
SC20_Hardware_Design 53 / 130
1.
1)
B: Bidirectional digital with CMOS input. PD: nppukp=default pull-down with programmable options
following the colon (:).
2.
2)
Wakeup: interrupt pins that can wake up the system.
3.
3)
GPIO_68 and GPIO_88 cannot be pulled up during start-up.
3.14. SPI Interface
SC20 module provide one SPI interface multiplexed from GPIO interfaces. The interface only supports
the master mode.
Table 17: Pin Definition of SPI Interface
113
GPIO_99
GPIO_99
B-PD: nppukp
115
GPIO_95
GPIO_95
B-PD: nppukp
Wakeup
116
GPIO_11
GPIO_11
B-PD: nppukp
Wakeup
117
GPIO_10
GPIO_10
B-PD: nppukp
118
GPIO_9
GPIO_9
B-PD: nppukp
119
GPIO_8
GPIO_8
B-PD: nppukp
123
GPIO_16
GPIO_16
B-PD: nppukp
124
GPIO_17
GPIO_17
B-PD: nppukp
Pin Name
Pin No
I/O Description
Comment
GPIO_8
119
IO
GPIO by default.
Can be multiplexed into SPI_MOSI.
Master out slave in of SPI
GPIO_9
118
IO
GPIO by default.
Can be multiplexed into SPI_MISO.
Master in slave out of SPI
GPIO_10
117
DO
GPIO by default.
Can be multiplexed into SPI_CS_N.
SPI chip select
GPIO_11
116
DO
GPIO by default.
Can be multiplexed into SPI_CLK.
SPI clock
NOTES