Datasheet

Electrical Characteristics
MC9S08QE128 Series Data Sheet, Rev. 7
Freescale Semiconductor 31
Figure 25. ADC Input Impedance Equivalency Diagram
Table 18. 12-bit ADC Characteristics (V
REFH
= V
DDAD
, V
REFL
= V
SSAD
)
Characteristic Conditions C Symb Min Typ
1
Max Unit Comment
Supply Current
ADLPC=1
ADLSMP=1
ADCO=1
TI
DDAD
— 120 —
μA
Supply Current
ADLPC=1
ADLSMP=0
ADCO=1
TI
DDAD
— 202 —
μA
Supply Current
ADLPC=0
ADLSMP=1
ADCO=1
TI
DDAD
— 288 —
μA
Supply Current
ADLPC=0
ADLSMP=0
ADCO=1
DI
DDAD
—0.532 1
mA
Supply Current Stop, Reset, Module Off P I
DDAD
— 0.007 0.8 μA
ADC
Asynchronous
Clock Source
High Speed (ADLPC=0) P f
ADACK
23.35
MHz
t
ADACK
= 1/f
ADACK
Low Power (ADLPC=1) P 1.25 2 3.3
+
–
+
–
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