Datasheet

MC9S08SH32 Series Data Sheet, Rev. 2
Freescale Semiconductor 121
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 configured 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 ADCH Channel Input
00000 AD0 PTA0/AD0 10000 AD16 V
SS
00001 AD1 PTA1/ADP1 10001 AD17 V
SS
00010 AD2 PTA2/ADP2 10010 AD18 V
SS
00011 AD3 PTA3/ADP3 10011 AD19 V
SS
00100 AD4 PTB0/ADP4 10100 AD20 V
SS
00101 AD5 PTB1/ADP5 10101 AD21 V
SS
00110 AD6 PTB2/ADP6 10110 AD22 Reserved
00111 AD7 PTB3/ADP7 10111 AD23 Reserved
01000 AD8 PTC0/ADP8 11000 AD24 Reserved
01001 AD9 PTC1/ADP9 11001 AD25 Reserved
01010 AD10 PTC2/ADP10 11010 AD26 Temperature Sensor
1
1
For information, see Section 9.1.5, “Temperature Sensor”.
01011 AD11 PTC3/ADP11 11011 AD27 Internal Bandgap
2
01100 AD12 PTC4/ADP12 11100 - Reserved
01101 AD13 PTC5/ADP13 11101
V
REFH
V
DD
01110 AD14 PTC6/ADP14 11110 V
REFL
V
SS
01111 AD15 PTC7/ADP15 11111 Module Disabled None
PRELIMINARY