Datasheet

MC9S08FL16 Series Data Sheet, Rev. 3
Electrical Characteristics
Freescale Semiconductor24
5.10 ADC Characteristics
Figure 16. ADC Input Impedance Equivalency Diagram
Table 12. 8-Bit ADC Operating Conditions
Characteristic Conditions Symb Min Typical
1
1
Typical values assume V
DDA
= 5.0 V, Temp = 25 C, f
ADCK
= 1.0 MHz unless otherwise stated. Typical values are for reference
only and are not tested in production.
Max Unit Comment
Supply voltage
Absolute V
DDA
4.5 — 5.5 V
Delta to V
DD
(V
DD
– V
DDA
)
2
2
DC potential difference.
V
DDA
–100 0 100 mV
Ground voltage Delta to V
SS
(V
SS
– V
SSA
)
2
V
SSA
–100 0 100 mV
Input voltage — V
ADIN
V
REFL
—V
REFH
V
Input
capacitance
—C
ADIN
—4.55.5pF
Input resistance — R
ADIN
—3 5k
Analog source
resistance
8-bit mode (all valid f
ADCK
)R
AS
——10k External to MCU
ADC conversion
clock frequency
High speed (ADLPC = 0)
f
ADCK
0.4 — 8.0
MHz
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