MC9S08QA4_09 Datasheet, PDF (14/32 Pages) Freescale Semiconductor, Inc – Technical Data

Electrical Characteristics
RESET PIN
t_extrst
Figure 10. Reset Timing
t_IHIL
KBIPx
IRQ/KBIPx
t_ILIH
Figure 11. IRQ/KBIPx Timing
3.8.2 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 10. TPM/MTIM Input Timing
Function
External clock frequency
External clock period
External clock high time
External clock low time
Input capture pulse width
Symbol
Min
f_TCLK
0
t_TCLK
4
t_clkh
1.5
t_clkl
1.5
t_ICPW
1.5
Max
f_Bus/4
—
—
—
—
Unit
Hz
t_cyc
t_cyc
t_cyc
t_cyc
t_clkh
t_TCLK
TCLK
t_clkl
Figure 12. Timer External Clock
MC9S08QA4 Series MCU Data Sheet, Rev. 3
14
Freescale Semiconductor