Datasheet

STMPE811 I2C and SPI interface
Doc ID 14489 Rev 6 9/65
3 I
2
C and SPI interface
3.1 Interface selection
The STMPE811 interfaces with the host CPU via a I
2
C or SPI interface. The pin IN_1 allows
the selection of interface protocol at reset state.
Figure 3. STMPE811 interface
Table 5. Interface selection pins
Pin I
2
C function SPI function Reset state
3 Address 0 Data out CPHA for SPI
4CLOCKCLOCK
−
5 SDATA CS CPOL_N for SPI
7
−
Data in
−
9MODEI
2
C set to ‘0’ Set to ‘1’ for SPI
SPI I/F
module
I C I/F
module
DIN
DOUT
CLK
CS
SDAT
SCLK
A0
MUX
unit
2