HCS08 datasheet(307/316 Pages) NXP

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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

Rating

Symbol

Min

Max

Unit

Temp Rated1

1 Electrical characteristics only apply to the temperature rated devices marked with x.

Standard

AEC

Grade 0

1—

External clock frequency (1/tTCLK)fTCLK

fBus/4

MHz

—

External clock period

tTCLK

4—

tcyc

—

External clock high time

tclkh

1.5

—

tcyc

—

External clock low time

tclkl

1.5

—

tcyc

—

Input capture pulse width

tICPW

1.5

—

tcyc

tTCLK

tclkh

tclkl

TCLK

tICPW

TPMCHn

tICPW

TPMCHn

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