mc9s08dz32 Freescale Semiconductor, Inc, mc9s08dz32 Datasheet - Page 172

• Manufacturer Part Number: mc9s08dz32
• Description: Hcs08 Microcontrollers 8-bit Can Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Chapter 10 Analog-to-Digital Converter (S08ADC12V1)
10.1.3
The ADC module is capable of performing conversions using the MCU bus clock, the bus clock divided
by two, the local asynchronous clock (ADACK) within the module, or the alternate clock, ALTCLK. The
alternate clock for the MC9S08DZ60 Series MCU devices is the external reference clock (MCGERCLK).
The selected clock source must run at a frequency such that the ADC conversion clock (ADCK) runs at a
frequency within its specified range (f
determined by the ADIV bits.
ALTCLK is active while the MCU is in wait mode provided the conditions described above are met. This
allows ALTCLK to be used as the conversion clock source for the ADC while the MCU is in wait mode.
ALTCLK cannot be used as the ADC conversion clock source while the MCU is in either stop2 or stop3.
10.1.4
The ADC hardware trigger, ADHWT, is the output from the real time counter (RTC). The RTC counter
can be clocked by either MCGERCLK or a nominal 1 kHz clock source.
172
Notes:
ADCH
00000
00001
00010
00011
00100
00101
00110
00111
01000
01001
01010
01011
01100
01101
01110
01111
1 For information, see
2 Requires BGBE =1 in SPMSC1 see
(SPMSC2)”. For value of bandgap voltage reference see
Alternate Clock
Hardware Trigger
Channel
AD10
AD11
AD12
AD13
AD14
AD15
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
AD8
AD9
Section 10.1.5, “Temperature
PTA2/ADP2/ACMP1P-
PTA3/ADP3/ACMP1O
PTA1/ADP1/ACMP1+
PTA0/ADP0/MCLK
Table 10-1. ADC Channel Assignment
PTB2/ADP10
PTB3/ADP11
PTB4/ADP12
PTB5/ADP13
PTB6/ADP14
PTB7/ADP15
PTB0/ADP8
PTB1/ADP9
PTA4/ADP4
PTA5/ADP5
PTA6/ADP6
PTA7/ADP7
MC9S08DZ60 Series Data Sheet, Rev. 3
Section 5.8.8, “System Power Management Status and Control 2 Register
Input
ADCK
) after being divided down from the ALTCLK input as
Sensor”.
A.6, “DC
11000–
ADCH
10000
10001
10010
10011
10100
10101
10110
10111
11001
11010
11011
11100
11101
11110
11111
Characteristics”.
AD24 through AD25
Module Disabled
Reserved
Channel
V
V
AD16
AD17
AD18
AD19
AD20
AD21
AD22
AD23
AD26
AD27
REFH
REFL
Freescale Semiconductor
Temperature Sensor
Internal Bandgap
PTC0/ADP16
PTC1/ADP17
PTC2/ADP18
PTC3/ADP19
PTC4/ADP20
PTC5/ADP21
PTC6/ADP22
PTC7/ADP23
Reserved
Reserved
V
V
Input
None
REFH
REFL
2
1