Hardware specifications
SPSGRF
10/24
DocID027664 Rev 6
3.6 Pin
connections
Figure 3. Pin connection diagram
Table 9. Pin assignment
Name
Type Pin#
Description
Alt
function
V max. tolerance
Initial state
SPI interface
SPI_CLK
I
7
SPI CLOCK (Max. 8 MHz)
V
in
SPI_MISO O
8
SPI MISO (MASTER in / SLAVE out)
V
in
SPI_MOSI I
9
SPI MOSI (MASTER out SLAVE in)
V
in
SPI_CS
I
10
SPI “Chip Select” (SPI slave select)
V
in
Power and ground
V
in
5
V
in
(1.8V - 3.6V max.)
GND
6
GND
Module shutdown
SDN
I
11
Shutdown input (active high)
(1.8V - 3.6V max.)
GPIO - general purpose input/output
GPIO [0]
I/O
4
Programmable input / output &
analog temperature output
(1.8V - V
in
max.)
Digital output.
Low power
GPIO [1]
I/O
3
Programmable input / output
(1.8V - V
in
max.)
Digital output.
Low power
GPIO [2]
I/O
2
Programmable input / output
(1.8V - V
in
max.)
Digital output.
Low power
GPIO [3]
I/O
1
Programmable input / output
(1.8V - V
in
max.)
Digital output.
Low power