MC9S08QE32 Datasheet, PDF (25/44 Pages) Freescale Semiconductor, Inc – 8-Bit HCS08 Central Processor Unit (CPU)

3.11 Analog Comparator (ACMP) Electricals
Table 14. Analog Comparator Electrical Specifications
C
Characteristic
D Supply voltage
P Supply current (active)
D Analog input voltage
P Analog input offset voltage
C Analog comparator hysteresis
P Analog input leakage current
C Analog comparator initialization delay
Symbol
V_DD
I_DDAC
V_AIN
V_AIO
V_H
I_ALKG
t_AINIT
Min
1.8
—
V_SS – 0.3
3.0
—
—
Typical
—
20
—
20
9.0
—
—
Electrical Characteristics
Max
Unit
3.6
V
35
μA
V_DD
V
40
mV
15.0
mV
1.0
μA
1.0
μs
3.12 ADC Characteristics
Table 15. 12-bit ADC Operating Conditions
C Characteristic
Conditions
Symbol Min
Typical¹
Max
Unit
Comment
D Supply voltage Absolute
V_DDAD
Delta to V_DD (V_DD-V_DDAD)² ΔV_DDAD
D Ground voltage Delta to V_SS (V_SS-V_SSAD)² ΔV_SSAD
D Ref Voltage
High
V_REFH
1.8
–100
–100
1.8
—
3.6
V
0
100
mV
0
100
mV
V_DDAD
V_DDAD
V
D Input Voltage
C Input
Capacitance
V_ADIN
V_REFL
—
V_REFH
V
C_ADIN
—
4.5
5.5
pF
C Input
Resistance
R_ADIN
—
5
7
kΩ
C Analog Source 12 bit mode
Resistance
f_ADCK > 4 MHz
f_ADCK < 4 MHz
10 bit mode
f_ADCK > 4 MHz
f_ADCK < 4 MHz
—
—
2
—
—
5
R_AS
—
—
5
kΩ
External to
MCU
—
—
10
8 bit mode (all valid f_ADCK)
—
—
10
D ADC
High Speed (ADLPC=0)
0.4
—
8.0
Conversion
Clock Freq.
Low Power (ADLPC=1)
f_ADCK
0.4
—
MHz
4.0
1 _{Typical values assume VDDAD = 3.0 V, Temp = 25 °C, fADCK=1.0 MHz unless otherwise state. Typical values are for reference}
only and are not tested in production.
2 _{DC potential difference.}
MC9S08QE32 MCU Series Data Sheet, Rev. 1
Freescale Semiconductor
25