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MC68HC908QB8 Datasheet, PDF (225/236 Pages) Freescale Semiconductor, Inc – To provide the most up-to-date information, the revision of our documents | |||
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18.16 Timer Interface Module Characteristics
Timer Interface Module Characteristics
Characteristic
Symbol
Min
Max
Timer input capture pulse width(1)
Timer input capture period
Timer input clock pulse width(1)
tTH, tTL
2
â
tTLTL
Note(2)
â
tTCL, tTCH
tcyc + 5
â
1. Values are based on characterization results, not tested in production.
2. The minimum period is the number of cycles it takes to execute the interrupt service routine plus 1 tcyc.
Unit
tcyc
tcyc
ns
INPUT CAPTURE
RISING EDGE
INPUT CAPTURE
FALLING EDGE
INPUT CAPTURE
BOTH EDGES
TCLK
tTLTL
tTH
tTLTL
tTL
tTLTL
tTH
tTL
tTCH
tTCL
Figure 18-13. Timer Input Timing
MC68HC908QB8 Data Sheet, Rev. 1
Freescale Semiconductor
225
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