MC68HC908MR8 Datasheet, PDF (321/372 Pages) Motorola, Inc – Microcontrollers

Analog-to-Digital Converter (ADC)
I/O Registers
Table 18-1. Mux Channel Select
ADCH4 ADCH3 ADCH2 ADCH1 ADCH0
Input select
0
0
0
0
0
PTA0
0
0
0
0
1
PTA1
0
0
0
1
0
PTA2
0
0
0
1
1
PTA3
0
0
1
0
0
PTA4
0
0
1
0
1
PTA5
0
0
1
1
0
PTA6
0
0
1
1
1
Unused*
0
1
0
0
0
Unused*
0
1
0
0
1
Unused*
0
1
0
1
0
Unused*
0
1
0
1
1
Ø
0
1
1
0
0
Ø
0
1
1
0
1
Ø
0
1
1
1
0
Ø
0
1
1
1
1
Ø
1
0
0
0
0
Ø
1
1
0
1
0
Unused*
1
1
0
1
1
Reserved**
1
1
1
0
0
Unused*
1
1
1
0
1
V_REFH
1
1
1
1
0
V_SS
1
1
1
1
1
ADC power off
* If any unused channels are selected, the resulting ADC conversion will be unknown.
** Used for factory testing.
MC68HC908MR8 — Rev 4.1
Freescale Semiconductor
Analog-to-Digital Converter (ADC)
Technical Data
321