S9S08SL8F1CTJ Datasheet, PDF (137/356 Pages) Freescale Semiconductor, Inc – provides the functional version of the on-chip modules

Chapter 10
Analog-to-Digital Converter (S08ADCV1)
10.1 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
MC9S08EL32 Series and MC9S08SL16 Series devices operates at a higher
voltage range (2.7 V to 5.5 V) and does not include stop1 mode.
The ADC channel assignments, alternate clock function, and hardware trigger function are configured as
described below for the MC9S08EL32 Series and MC9S08SL16 Series family of devices.
10.1.1 Channel Assignments
The ADC channel assignments for the MC9S08EL32 Series and MC9S08SL16 Series devices are shown
in Table 10-1. Reserved channels convert to an unknown value.
Table 10-1. ADC Channel Assignment
ADCH Channel
Input
ADCH
Channel
Input
00000 AD0 PTA0/PIA0/TPM1CH0/TCLK/ACMP1+/ADP0
00001 AD1
PTA1/PIA1/TPM2CH0/ACMP1-/ADP1
00010 AD2
PTA2/PIA2/SDA/RxD/ACMP1O/ADP2
00011 AD3
PTA3/PIA3/SCL/TxD/ADP3
00100 AD4
PTB0/PIB0/SLRxD/RxD/ADP4
00101 AD5
PTB1/PIB1/SLTxD/TxD/ADP5
00110 AD6
PTB2/PIB2/SDA/SPSCK/ADP6
00111 AD7
PTB3/PIB3/SCL/MOSI/ADP7
01000 AD8
PTC0/PIC0/TPM1CH0/ADP8
10000
10001
10010
10011
10100
10101
10110
10111
11000
AD16
AD17
AD18
AD19
AD20
AD21
AD22
AD23
AD24
V_REFL
V_REFL
V_REFL
V_REFL
V_REFL
V_REFL
V_REFL
V_REFL
Reserved
01001
01010
01011
AD9
AD10
AD11
PTC1/PIC1/TPM1CH1/ADP9
PTC2/PIC2/TPM1CH2/ADP10
PTC3/PIC3/TPM1CH3/ADP11
11001
11010
11011
AD25
AD26
AD27
Reserved
Temperature Sensor¹
Internal Bandgap²
01100
01101
01110
01111
AD12
AD13
AD14
AD15
PTC4/PIC4/ADP12
PTC5/PIC5/ACMP2O/ADP13
PTC6/PIC6/ACMP2+/ADP14
PTC7/PIC7/ACMP2-/ADP15
11100
11101
11110
11111
V_REFH
V_REFH
V_REFL
Module Disabled
V_REFH
V_REFH
V_REFL
None
1 _{For information, see Section 10.1.4, “Temperature Sensor”.}
2 _{Requires BGBE =1 in SPMSC1 see Section 5.7.7, “System Power Management Status and Control 2 Register (SPMSC2)”.}
For value of bandgap voltage reference see Section A.6, “DC Characteristics”.
MC9S08EL32 Series and MC9S08SL16 Series Data Sheet, Rev. 3
Freescale Semiconductor
137