C8051F970-A-GM Datasheet, PDF (162/454 Pages) Silicon Laboratories – Low Power Capacitive Sensing MCU with up to 32 kB of Flash

C8051F97x
Register 19.5. AMUX0P4: Port 4 Analog Multiplexer Control
Bit
7
6
5
4
3
2
1
0
Name
B7
B6
B5
B4
B3
B2
B1
B0
Type
RW
RW
RW
RW
RW
RW
RW
RW
Reset
0
0
0
0
0
0
0
0
SFR Page = 0x0; SFR Address: 0xA5
Table 19.5. AMUX0P4 Register Bit Descriptions
Bit
Name
Function
7
B7
Port 4 Bit 7 Analog Multiplexor Control.
0: P4.7 pin is not connected by the Analog Multiplexer for CS0 or ADC0 measurements.
1: P4.7 pin is connected by the Analog Multiplexer for CS0 or ADC0 measurements.
6
B6
Port 4 Bit 6 Analog Multiplexor Control.
0: P4.6 pin is not connected by the Analog Multiplexer for CS0 or ADC0 measurements.
1: P4.6 pin is connected by the Analog Multiplexer for CS0 or ADC0 measurements.
5
B5
Port 4 Bit 5 Analog Multiplexor Control.
0: P4.5 pin is not connected by the Analog Multiplexer for CS0 or ADC0 measurements.
1: P4.5 pin is connected by the Analog Multiplexer for CS0 or ADC0 measurements.
4
B4
Port 4 Bit 4 Analog Multiplexor Control.
0: P4.4 pin is not connected by the Analog Multiplexer for CS0 or ADC0 measurements.
1: P4.4 pin is connected by the Analog Multiplexer for CS0 or ADC0 measurements.
3
B3
Port 4 Bit 3 Analog Multiplexor Control.
0: P4.3 pin is not connected by the Analog Multiplexer for CS0 or ADC0 measurements.
1: P4.3 pin is connected by the Analog Multiplexer for CS0 or ADC0 measurements.
2
B2
Port 4 Bit 2 Analog Multiplexor Control.
0: P4.2 pin is not connected by the Analog Multiplexer for CS0 or ADC0 measurements.
1: P4.2 pin is connected by the Analog Multiplexer for CS0 or ADC0 measurements.
1
B1
Port 4 Bit 1 Analog Multiplexor Control.
0: P4.1 pin is not connected by the Analog Multiplexer for CS0 or ADC0 measurements.
1: P4.1 pin is connected by the Analog Multiplexer for CS0 or ADC0 measurements.
0
B0
Port 4 Bit 0 Analog Multiplexor Control.
0: P4.0 pin is not connected by the Analog Multiplexer for CS0 or ADC0 measurements.
1: P4.0 pin is connected by the Analog Multiplexer for CS0 or ADC0 measurements.
Note: If any of the internal signals are selected as the ADC0 input channel, the AMUX0 registers must not select an external
pin and all be cleared to 0.
Rev 1.0
163