Техническая Спецификация для Freescale Semiconductor Tower System Kit for MC9S08PT60 Series TWR-S08PT60-KIT TWR-S08PT60-KIT
Модели
TWR-S08PT60-KIT
5.2.3 FTM 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.
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 7. FTM input timing
No.
C
Function
Symbol
Min
Max
Unit
1
D
External clock
frequency
f
TCLK
0
f
Bus
/4
Hz
2
D
External clock
period
t
TCLK
4
—
t
cyc
3
D
External clock
high time
t
clkh
1.5
—
t
cyc
4
D
External clock
low time
t
clkl
1.5
—
t
cyc
5
D
Input capture
pulse width
t
ICPW
1.5
—
t
cyc
t
TCLK
t
clkh
t
clkl
TCLK
Figure 9. Timer external clock
t
ICPW
FTMCHn
t
ICPW
FTMCHn
Figure 10. Timer input capture pulse
Switching specifications
MC9S08PT60 Series Data Sheet, Rev. 3, 4/2012.
16
Freescale Semiconductor, Inc.