Datasheet

Appendix A Electrical Characteristics
MC9S08SG8 MCU Series Data Sheet, Rev. 8
Freescale Semiconductor 307
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.
Figure A-12. Timer External Clock
Figure A-13. Timer Input Capture Pulse
Table A-14. TPM Input Timing
Num C Rating Symbol Min Max Unit
Temp Rated
1
1
Electrical characteristics only apply to the temperature rated devices marked with x.
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
xx
3 — External clock high time
t
clkh
1.5 —
t
cyc
xx
4 — External clock low time
t
clkl
1.5 —
t
cyc
xx
5 — Input capture pulse width
t
ICPW
1.5 —
t
cyc
xx
t
TCLK
t
clkh
t
clkl
TCLK
t
ICPW
TPMCHn
t
ICPW
TPMCHn