MC68HC908GT16 Datasheet, PDF (97/412 Pages) Motorola, Inc – Microcontrollers

Analog-to-Digital Converter (ADC)
I/O Registers
The voltage levels supplied from internal reference nodes, as specified
in Table 5-1, are used to verify the operation of the ADC converter both
in production test and for user applications.
Table 5-1. Mux Channel Select⁽¹⁾
ADCH4 ADCH3 ADCH2 ADCH1 ADCH0
Input Select
0
0
0
0
0
PTB0/AD0
0
0
0
0
1
PTB1/KBD1
0
0
0
1
0
PTB2/KBD2
0
0
0
1
1
PTB3/KBD3
0
0
1
0
0
PTB4/KBD4
0
0
1
0
1
PTB5/KBD5
0
0
1
1
0
PTB6/KBD6
0
0
1
1
1
PTB7/AD7
0
1
0
0
0
↓
↓
↓
↓
↓
Reserved
1
1
1
0
0
1
1
1
0
1
V_REFH
1
1
1
1
0
V_REFL
1
1
1
1
1
ADC power off
1. If any unused channels are selected, the resulting ADC conversion will be unknown or
reserved.
MC68HC908GT16 • MC68HC908GT8 — Rev. 2
MOTOROLA
Analog-to-Digital Converter (ADC)
Technical Data
97