Pin Control 1 Register (Apctl1) - ROHS MC9S08QE128 Reference Manual

10.3.8

Pin Control 1 Register (APCTL1)

The pin control registers are used to 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.
7
R
ADPC7
W
Reset: 0
Field
7 ADC Pin Control 7 — ADPC7 is used to control the pin associated with channel AD7.
ADPC7 0 AD7 pin I/O control enabled
1 AD7 pin I/O control disabled
6 ADC Pin Control 6 — ADPC6 is used to control the pin associated with channel AD6.
ADPC6 0 AD6 pin I/O control enabled
1 AD6 pin I/O control disabled
5 ADC Pin Control 5 — ADPC5 is used to control the pin associated with channel AD5.
ADPC5 0 AD5 pin I/O control enabled
1 AD5 pin I/O control disabled
4 ADC Pin Control 4 — ADPC4 is used to control the pin associated with channel AD4.
ADPC4 0 AD4 pin I/O control enabled
1 AD4 pin I/O control disabled
3 ADC Pin Control 3 — ADPC3 is used to control the pin associated with channel AD3.
ADPC3 0 AD3 pin I/O control enabled
1 AD3 pin I/O control disabled
2 ADC Pin Control 2 — ADPC2 is used to control the pin associated with channel AD2.
ADPC2 0 AD2 pin I/O control enabled
1 AD2 pin I/O control disabled
Freescale Semiconductor
Table 10-8. Input Clock Select
ADICLK
00 Bus clock
01 Bus clock divided by 2
10 Alternate clock (ALTCLK)
11 Asynchronous clock (ADACK)
6 5
ADPC6 ADPC5
0 0
Figure 10-11. Pin Control 1 Register (APCTL1)
Table 10-9. APCTL1 Register Field Descriptions
MC9S08QE128 MCU Series Reference Manual, Rev. 2
12-bit Analog-to-Digital Converter (S08ADCV1)
Selected Clock Source
4 3
ADPC4 ADPC3
0 0
Description
2 1
ADPC2 ADPC1 ADPC0
0 0
0
0
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