S9S08SG8E2MTJ Datasheet, PDF (311/320 Pages) Freescale Semiconductor, Inc – MC9S08SG8 MC9S08SG4 Data Sheet Addendum

Appendix A Electrical Characteristics
A.12.2 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 A-14. TPM Input Timing
Num C
Rating
Symbol Min
Temp Rated¹
Max
Unit
Standard
AEC
Grade 0
1
— External clock frequency (1/t_TCLK) f_TCLK
dc
f_Bus/4
MHz
x
x
2 — External clock period
t_TCLK
4
—
t_cyc
x
x
3 — External clock high time
t_clkh
1.5
—
t_cyc
x
x
4 — External clock low time
t_clkl
1.5
—
t_cyc
x
x
5 — Input capture pulse width
t_ICPW
1.5
—
t_cyc
x
x
1 _{Electrical characteristics only apply to the temperature rated devices marked with x.}
t_clkh
t_TCLK
TCLK
t_clkl
Figure A-12. Timer External Clock
TPMCHn
t_ICPW
TPMCHn
t_ICPW
Figure A-13. Timer Input Capture Pulse
MC9S08SG8 MCU Series Data Sheet, Rev. 7
Freescale Semiconductor
307