Datasheet

Appendix A Electrical Characteristics
MC9S08QD4 Series MCU Data Sheet, Rev. 6
Freescale Semiconductor 187
Figure A-13. IRQ/KBIPx Timing
A.8.2 Timer/PWM (TPM) 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 A-14. Timer External Clock
Figure A-15. Timer Input Capture Pulse
Table A-9. TPM/MTIM Input Timing
Function Symbol Min Max Unit
External clock frequency f
TCLK
dc f
Bus
/4 MHz
External clock period t
TCLK
4—t
cyc
External clock high time t
clkh
1.5 — t
cyc
External clock low time t
clkl
1.5 — t
cyc
Input capture pulse width t
ICPW
1.5 — t
cyc
t
IHIL
IRQ/KBIPx
t
ILIH
IRQ/KBIPx
t
Text
t
clkh
t
clkl
TCLK
t
ICPW
TPMCHn
t
ICPW
TPMCHn