MC9S08AW16CFUE Datasheet, PDF (302/324 Pages) Freescale Semiconductor, Inc – MC9S08AW60 Features

Appendix A Electrical Characteristics and Timing Specifications
A.10.2 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.
Table A-14. TPM Input Timing
Function
External clock frequency
External clock period
External clock high time
External clock low time
Input capture pulse width
Symbol
Min
f_TPMext
dc
t_TPMext
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
TPMxCLK
t_clkh
t_TPMext
t_clkl
Figure A-14. Timer External Clock
TPMxCHn
t_ICPW
TPMxCHn
t_ICPW
Figure A-15. Timer Input Capture Pulse
MC9S08AW60 Data Sheet, Rev 2
302
Freescale Semiconductor