MC9S08QE8_09 Datasheet, PDF (21/46 Pages) Freescale Semiconductor, Inc – 8-Bit HCS08 Central Processor Unit

Electrical Characteristics
t_IHIL
KBIPx
IRQ/KBIPx
t_ILIH
Figure 16. IRQ/KBIPx Timing
3.10.2 TPM 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.
Table 13. TPM Input Timing
No. C
Function
1
D External clock frequency
2
D External clock period
3
D External clock high time
4
D External clock low time
5
D Input capture pulse width
Symbol
Min
f_TCLK
0
t_TCLK
4
t_clkh
1.5
t_clkl
1.5
t_ICPW
1.5
Max
f_Bus/4
—
—
—
—
Unit
Hz
t_cyc
t_cyc
t_cyc
t_cyc
t_clkh
t_TCLK
TCLK
t_clkl
Figure 17. Timer External Clock
TPMCHn
t_ICPW
TPMCHn
t_ICPW
Figure 18. Timer Input Capture Pulse
MC9S08QE8 Series Data Sheet, Rev. 7
Freescale Semiconductor
21