Electrical Characteristics
3.9.2
TPM/MTIM Module Timing
Synchronizer circuits determine the shortest input pulses that can be recognized or the fastest clock that
can be used as the optional external source to the timer counter. These synchronizers operate from the
current bus rate clock.
Table 11. TPM Input Timing
Num
1
2
3
4
5
C
D
D
D
D
D
Rating
External clock frequency
External clock period
External clock high time
External clock low time
Input capture pulse width
Symbol
f TPMext
t TPMext
t clkh
t clkl
t ICPW
Min
DC
4
1.5
1.5
1.5
Max
f Bus /4
Unit
MHz
t cyc
t cyc
t cyc
t cyc
t TCLK
t clkh
TCLK
t clkl
Figure 19. Timer External Clock
t ICPW
TPMCHn
TPMCHn
t ICPW
Figure 20. Timer Input Capture Pulse
3.10
Analog Comparator (ACMP) Electrical
Table 12. Analog Comparator Electrical Specifications
Num
1
2
3
C
D
P
D
Characteristic
Supply voltage
Supply current (active)
Analog input voltage 1
Symbol
V DD
I DDAC
V AIN
Min
1.80
V SS – 0.3
Typical
20
Max
5.5
35
V DD
Unit
V
μ A
V
4
P
Analog input offset
voltage 1
V AIO
20
40
mV
5
6
7
8
C
C
P
C
Analog Comparator hysteresis 1
Analog source impedance 1
Analog input leakage current
Analog Comparator initialization delay
V H
R AS
I ALKG
t AINIT
3.0
9.0
15.0
10
1.0
1.0
mV
k Ω
μ A
μ s
MC9RS08KA8 Series MCU Data Sheet, Rev. 4
20
Freescale Semiconductor
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