mc9s08dz32amlfr Freescale Semiconductor, Inc, mc9s08dz32amlfr Datasheet - Page 440

• Manufacturer Part Number: mc9s08dz32amlfr
• Description: Hcs08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Appendix A Electrical Characteristics
A.12.2
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.
440
Num
1
2
3
4
5
Timer/PWM
—
—
C
D
D
D
External clock frequency
External clock period
External clock high time
External clock low time
Input capture pulse width
TPMxCHn
TPMxCHn
TPMxCHn
Figure A-14. Timer Input Capture Pulse
Rating
MC9S08DZ128 Series Data Sheet, Rev. 1
Figure A-13. Timer External Clock
Table A-14. TPM Input Timing
t
clkh
t
t
ICPW
ICPW
t
Text
Symbol
f
t
TPMext
TPMext
t
ICPW
t
t
clkh
clkl
t
clkl
Min
1.5
1.5
1.5
dc
4
f
Max
Bus
Freescale Semiconductor
—
—
—
—
/4
MHz
Unit
t
t
t
t
cyc
cyc
cyc
cyc