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| MC9S08SH32 Datasheet, PDF (121/328 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
MC9S08SH32 Series devices operate at a higher voltage range (2.7 V to
5.5 V) and do not include stop1 mode. Please ignore references to stop1.
The ADC channel assignments, alternate clock function, and hardware trigger function are conï¬gured as
described below for the MC9S08SH32 Series family of devices.
9.1.1 Channel Assignments
The ADC channel assignments for the MC9S08SH32 Series devices are shown in Table 9-1. Reserved
channels convert to an unknown value.This chapter shows bits for all S08ADCV1 channels.
MC9S08SH32 Series MCUs do not use all of these channels. All bits corresponding to channels that are
not available on a device are reserved.
Table 9-1. ADC Channel Assignment
ADCH
Channel
Input
00000
AD0
PTA0/AD0
00001
AD1
PTA1/ADP1
00010
AD2
PTA2/ADP2
00011
AD3
PTA3/ADP3
00100
AD4
PTB0/ADP4
00101
AD5
PTB1/ADP5
00110
AD6
PTB2/ADP6
00111
AD7
PTB3/ADP7
01000
AD8
PTC0/ADP8
01001
AD9
PTC1/ADP9
01010
AD10
PTC2/ADP10
01011
AD11
PTC3/ADP11
01100
AD12
PTC4/ADP12
01101
AD13
PTC5/ADP13
01110
AD14
PTC6/ADP14
01111
AD15
PTC7/ADP15
1 For information, see Section 9.1.5, âTemperature Sensorâ.
ADCH
10000
10001
10010
10011
10100
10101
10110
10111
11000
11001
11010
11011
11100
11101
11110
11111
Channel
Input
AD16
AD17
AD18
AD19
AD20
AD21
AD22
AD23
AD24
AD25
AD26
AD27
-
VREFH
VREFL
Module Disabled
VSS
VSS
VSS
VSS
VSS
VSS
Reserved
Reserved
Reserved
Reserved
Temperature Sensor1
Internal Bandgap2
Reserved
VDD
VSS
None
MC9S08SH32 Series Data Sheet, Rev. 2
Freescale Semiconductor
121
PRELIMINARY
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