Datasheet

MC9S08SE8 Series MCU Data Sheet, Rev. 3
Electrical Characteristics
Freescale Semiconductor26
Figure 20. IRQ/Pin Interrupt Timing
3.10.2 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.
Figure 21. Timer External Clock
Figure 22. Timer Input Capture Pulse
Table 14. TPM Input Timing
Num C Rating Symbol Min Max Unit
1 D External clock frequency f
TPMext
DC f
Bus
/4 MHz
2 D External clock period t
TPMext
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
IHIL
IRQ/Pin Interrupts
t
ILIH
IRQ/Pin Interrupts
t
TCLK
t
clkh
t
clkl
TCLK
t
ICPW
TPMCHn
t
ICPW
TPMCHn