Datasheet

Appendix A Electrical Characteristics
MC9S08GB60A Data Sheet, Rev. 2
Freescale Semiconductor 277
Figure A-13. IRQ Timing
A.9.2 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-11. TPM Input Timing
Function Symbol Min Max Unit
External clock frequency
f
TPMext
dc
f
Bus
/4
MHz
External clock period
t
TPMext
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
ILIH
IRQ
t
Text
t
clkh
t
clkl
TPMxCHn
t
ICPW
TPMxCHn
t
ICPW
TPMxCHn