Datasheet

Electrical Characteristics
MC9S08QE8 Series Data Sheet, Rev. 8
Freescale Semiconductor 25
3.12 ADC Characteristics
D Analog input voltage V
AIN
V
SS
– 0.3 — V
DD
V
P Analog input offset voltage V
AIO
—2040mV
C
Analog comparator hysteresis V
H
3.0 9.0 15.0
mV
P Analog input leakage current
I
ALKG
——1.0A
C Analog comparator initialization delay t
AINIT
——1.0s
Table 16. 12-Bit ADC Operating Conditions
Characteristic Conditions Symb Min Typical
1
1
Typical values assume V
DDA
= 3.0 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
1.8 — 3.6 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
—5 7k —
Analog source
resistance
12-bit mode
f
ADCK
> 4 MHz
f
ADCK
< 4 MHz
R
AS
—
—
—
—
2
5
k External to MCU10-bit mode
f
ADCK
> 4 MHz
f
ADCK
< 4 MHz
—
—
—
—
5
10
8-bit mode (all valid f
ADCK
)——10
ADC
conversion
clock freq.
High speed (ADLPC = 0)
f
ADCK
0.4 — 8.0
MHz —
Low power (ADLPC = 1)
0.4 — 4.0
Table 15. Analog Comparator Electrical Specifications (continued)
C Characteristic Symbol Min Typical Max Unit