MC9S08SG32 Datasheet, PDF (135/328 Pages) Freescale Semiconductor, Inc – HCS08 Microcontrollers

Chapter 8 Analog-to-Digital Converter (S08ADC10V1)
Table 9-11. APCTL2 Register Field Descriptions (continued)
Field
Description
1
ADPC9
0
ADPC8
ADC Pin Control 9 — ADPC9 controls the pin associated with channel AD9.
0 AD9 pin I/O control enabled
1 AD9 pin I/O control disabled
ADC Pin Control 8 — ADPC8 controls the pin associated with channel AD8.
0 AD8 pin I/O control enabled
1 AD8 pin I/O control disabled
9.3.10 Pin Control 3 Register (APCTL3)
The pin control registers disable the digital interface to the associated MCU pins used as analog inputs to
reduce digital noise and improve conversion accuracy. APCTL3 controls channels 16–23 of the ADC
module. This register is not implemented on MCUs that do not have associated external analog inputs.
Consult the ADC channel assignment in the module introduction for information on availability of this
register.
7
R
ADPC23
W
Reset:
0
6
5
4
ADPC22 ADPC21 ADPC20
3
ADPC19
2
ADPC18
0
0
0
0
0
Figure 9-12. Pin Control 3 Register (APCTL3)
1
ADPC17
0
0
ADPC16
0
Table 9-12. APCTL3 Register Field Descriptions
Field
Description
7
ADC Pin Control 23 — ADPC23 controls the pin associated with channel AD23.
ADPC23 0 AD23 pin I/O control enabled
1 AD23 pin I/O control disabled
6
ADC Pin Control 22 — ADPC22 controls the pin associated with channel AD22.
ADPC22 0 AD22 pin I/O control enabled
1 AD22 pin I/O control disabled
5
ADC Pin Control 21 — ADPC21 controls the pin associated with channel AD21.
ADPC21 0 AD21 pin I/O control enabled
1 AD21 pin I/O control disabled
4
ADC Pin Control 20 — ADPC20 controls the pin associated with channel AD20.
ADPC20 0 AD20 pin I/O control enabled
1 AD20 pin I/O control disabled
3
ADC Pin Control 19 — ADPC19 controls the pin associated with channel AD19.
ADPC19 0 AD19 pin I/O control enabled
1 AD19 pin I/O control disabled
2
ADC Pin Control 18 — ADPC18 controls the pin associated with channel AD18.
ADPC18 0 AD18 pin I/O control enabled
1 AD18 pin I/O control disabled
MC9S08SG32 Data Sheet, Rev. 7
Freescale Semiconductor
125