MC9S08MP16 Datasheet, PDF (29/36 Pages) Freescale Semiconductor, Inc – 8-Bit HCS08 Central Processor Unit (CPU)

Electrical Characteristics
Table 17. FTM Input Timing (continued)
No. C
Function
Symbol
Min
Max
4
D External clock low time
t_clkl
0.75
—
5
D Input capture pulse width
t_ICPW
0.75
—
1 _{The maximum external clock frequency is limited to 10MHz due to input filter characteristics.}
Unit
t_cyc
t_cyc
TCLK
t_clkh
t_TCLK
t_clkl
Figure 19. FTM External Clock
FTMxCHn
t_ICPW
FTMxCHn
t_ICPW
Figure 20. FTM Input Capture Pulse
2.14.3 MTIM Module Timing
Synchronizer circuits determine the fastest clock that can be used as the optional external clock source to the MTIM timer
counter. These synchronizers operate from the current bus rate clock.
Table 18. MTIM Input Timing
No. C
Function
1
D External clock frequency
2
D External clock period
3
D External clock high time
4
D External clock low time
Symbol
Min
f_TCLK
0
t_TCLK
4
t_clkh
1.5
t_clkl
1.5
Max
f_Bus/4
—
—
—
Unit
Hz
t_cyc
t_cyc
t_cyc
t_clkh
t_TCLK
TCLK
t_clkl
Figure 21. MTIM Timer External Clock
MC9S08MP16 Series Data Sheet, Rev. 1
Freescale Semiconductor
29