mc9s08sg4 Freescale Semiconductor, Inc, mc9s08sg4 Datasheet - Page 297

• Manufacturer Part Number: mc9s08sg4
• Description: 8-bit Microcontroller Family
• Manufacturer: Freescale Semiconductor, Inc

A.11 ADC Characteristics
Freescale Semiconductor
1
Supply voltage
Input Voltage
Input
Capacitance
Input
Resistance
Analog Source
Resistance
ADC
Conversion
Clock Freq.
Characteristic
Typical values assume V
reference only and are not tested in production.
V
AS
+
–
Absolute
10 bit mode
8 bit mode (all valid f
High Speed (ADLPC=0)
Low Power (ADLPC=1)
R
AS
DDAD
f
f
ADCK
ADCK
Conditions
Figure A-8. ADC Input Impedance Equivalency Diagram
= V
> 4MHz
< 4MHz
C
AS
DD
Z
AS
MC9S08SG8 MCU Series Data Sheet, Rev. 3
= 5.0V, Temp = 25°C, fADCK=1.0MHz unless otherwise stated. Typical values are for
Table A-11. ADC Operating Conditions
ADCK
)
V
+
–
ADIN
V
C
R
V
f
INPUT PIN EQUIVALENT
Symb
ADCK
Pad
leakage
due to
input
protection
R
DDAD
ADIN
ADIN
ADIN
INPUT PIN
INPUT PIN
INPUT PIN
AS
SIMPLIFIED
CIRCUIT
V
Min
2.7
REFL
0.4
0.4
—
—
—
—
—
Typ
4.5
—
—
—
—
—
—
—
3
Z
ADIN
1
CHANNEL SELECT
V
R
R
R
R
Max
REFH
5.5
5.5
8.0
4.0
ADIN
ADIN
ADIN
ADIN
10
10
SIMPLIFIED
5
5
CIRCUIT
Appendix A Electrical Characteristics
MHz
Unit
kΩ
kΩ
pF
V
V
C
External to MCU
ADIN
ADC SAR
Comment
ENGINE
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