mc9s08jm60 Freescale Semiconductor, Inc, mc9s08jm60 Datasheet - Page 146

• Manufacturer Part Number: mc9s08jm60
• Description: Hcs08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Analog-to-Digital Converter (S08ADC12V1)
10.3.8
The pin control registers disable the I/O port control of MCU pins used as analog inputs. APCTL1 is used
to control the pins associated with channels 0–7 of the ADC module.
146
ADICLK
MODE
Field
3:2
1:0
Reset:
W
R
Pin Control 1 Register (APCTL1)
Conversion Mode Selection. MODE bits are used to select between 12-, 10-, or 8-bit operation. See
Input Clock Select. ADICLK bits select the input clock source to generate the internal clock ADCK. See
Table
ADPC7
10-9.
7
0
Table 10-6. ADCCFG Register Field Descriptions (continued)
ADICLK
MODE
ADIV
00
01
10
11
00
01
10
11
00
01
10
11
ADPC6
0
6
Figure 10-10. Pin Control 1 Register (APCTL1)
8-bit conversion (N=8)
12-bit conversion (N=12)
10-bit conversion (N=10)
Reserved
Bus clock
Bus clock divided by 2
Alternate clock (ALTCLK)
Asynchronous clock (ADACK)
MC9S08JM60 Series Data Sheet, Rev. 2
ADPC5
Table 10-7. Clock Divide Select
Table 10-8. Conversion Modes
Table 10-9. Input Clock Select
0
5
Divide Ratio
1
2
4
8
ADPC4
Selected Clock Source
0
4
Mode Description
Description
ADPC3
0
3
Input clock ÷ 2
Input clock ÷ 4
Input clock ÷ 8
Clock Rate
Input clock
ADPC2
0
2
ADPC1
Freescale Semiconductor
0
1
ADPC0
Table
0
0
10-8.