Datasheet

Appendix A Electrical Characteristics
MC9S08SH32 Series Data Sheet, Rev. 2
Freescale Semiconductor 303
A.11 ADC Characteristics
Figure A-9. ADC Input Impedance Equivalency Diagram
Table A-11. ADC Operating Conditions
Num Characteristic Conditions Symb Min Typ
1
1
Typical values assume V
DDAD
=V
DD
= 5.0V, Temp = 25°C, f
ADCK
=1.0MHz unless otherwise stated. Typical values are for reference
only and are not tested in production.
Max Unit Comment
1 Supply voltage Absolute V
DDAD
2.7 — 5.5 V
2 Input Voltage V
ADIN
V
REFL
—V
REFH
V
3
Input
Capacitance
C
ADIN
— 4.5 5.5 pF
4
Input
Resistance
R
ADIN
—3 5kΩ
5
Analog Source
Resistance
10 bit mode
f
ADCK
> 4MHz
f
ADCK
< 4MHz
R
AS
—
—
—
—
5
10
kΩ External to MCU
6 8 bit mode (all valid f
ADCK
)——10
7 ADC
Conversion
Clock Freq.
High Speed (ADLPC=0) f
ADCK
0.4 — 8.0 MHz
8
Low Power (ADLPC=1) 0.4 — 4.0
+
–
+
–
V
AS
R
AS
C
AS
V
ADIN
Z
AS
Pad
leakage
due to
input
protection
Z
ADIN
SIMPLIFIED
INPUT PIN EQUIVALENT
CIRCUIT
R
ADIN
ADC SAR
ENGINE
SIMPLIFIED
CHANNEL SELECT
CIRCUIT
INPUT PIN
R
ADIN
C
ADIN
INPUT PIN
R
ADIN
INPUT PIN
R
ADIN
PRELIMINARY