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| MC9S08SG8 Datasheet, PDF (117/310 Pages) Freescale Semiconductor, Inc – Microcontrollers | |||
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Chapter 9
Analog-to-Digital Converter (S08ADCV1)
9.1 Introduction
The 10-bit analog-to-digital converter (ADC) is a successive approximation ADC designed for operation
within an integrated microcontroller system-on-chip.
NOTE
The MC9S08SG8 Family of devices do not include stop1 mode.
The ADC channel assignments, alternate clock function, and hardware trigger function are conï¬gured as
described below for the MC9S08SG8 family of devices.
9.1.1 Channel Assignments
The ADC channel assignments for the MC9S08SG8 devices are shown in Table 9-1. Reserved channels
convert to an unknown value.
Table 9-1. ADC Channel Assignment
ADCH
Channel
Input
ADCH
Channel
Input
00000
AD0
00001
AD1
00010
AD2
00011
AD3
00100
AD4
00101
AD5
00110
AD6
PTA0/AD0
PTA1/ADP1
PTA2/ADP2
PTA3/ADP3
PTB0/ADP4
PTB1/ADP5
PTB2/ADP6
10000
10001
10010
10011
10100
10101
10110
AD16
AD17
AD18
AD19
AD20
AD21
AD22
VSS
VSS
VSS
VSS
VSS
VSS
Reserved
00111
AD7
PTB3/ADP7
10111
AD23
Reserved
01000
AD8
PTC0/ADP8
11000
AD24
Reserved
01001
01010
01011
AD9
AD10
AD11
PTC1/ADP9
PTC2/ADP10
PTC3/ADP11
11001
11010
11011
AD25
AD26
AD27
Reserved
Temperature Sensor1
Internal Bandgap2
01100
AD12
VSS
11100
-
Reserved
01101
AD13
VSS
11101
VREFH
VDD
01110
AD14
VSS
11110
VREFL
VSS
01111
AD15
VSS
11111 Module Disabled
None
1 For information, see Section 9.1.4, âTemperature Sensorâ.
2 Requires BGBE =1 in SPMSC1 see Section 5.8.8, âSystem Power Management Status and Control 2 Register (SPMSC2)â.
For value of bandgap voltage reference see A.6, âDC Characteristicsâ.
MC9S08SG8 MCU Series Data Sheet, Rev. 0
Freescale Semiconductor
PRELIMINARY
117
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