mc9s08qg8 Freescale Semiconductor, Inc, mc9s08qg8 Datasheet - Page 270

• Manufacturer Part Number: mc9s08qg8
• Description: Hcs08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Appendix A Electrical Characteristics
A.8.2
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.
270
TPM/MTIM Module Timing
External clock frequency
External clock period
External clock high time
External clock low time
Input capture pulse width
Function
TCLK
TPMCHn
TPMCHn
IRQ/KBIPx
MC9S08QG8 and MC9S08QG4 Data Sheet, Rev. 1.01
KBIPx
Figure A-13. Timer Input Capture Pulse
Table A-9. TPM/MTIM Input Timing
Figure A-12. Timer External Clock
Figure A-11. IRQ/KBIPx Timing
t
clkh
Symbol
t
t
ICPW
ICPW
f
t
t
TCLK
TCLK
ICPW
t
t
clkh
clkl
t
t
IHIL
ILIH
t
TCLK
t
clkl
Min
1.5
1.5
1.5
0
4
f
Max
Bus
—
—
—
—
/4
Freescale Semiconductor
Unit
t
t
t
t
Hz
cyc
cyc
cyc
cyc