Datasheet

Appendix A Electrical Characteristics
MC9S08SG32 Data Sheet, Rev. 8
318 Freescale Semiconductor
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
# C Rating Symbol Min Max Unit
Temp
Rated
Standard
AEC Grade 0
1—
External clock frequency (1/t
TCLK
)f
TCLK
dc
f
Bus
/4
MHz
♦
♦
2 — External clock period
t
TCLK
4—
t
cyc
♦
♦
3 — External clock high time
t
clkh
1.5 —
t
cyc
♦
♦
4 — External clock low time
t
clkl
1.5 —
t
cyc
♦
♦
5 — Input capture pulse width
t
ICPW
1.5 —
t
cyc
♦
♦
t
TCLK
t
clkh
t
clkl
TCLK
t
ICPW
TPMCHn
t
ICPW
TPMCHn