Datasheet

Timer Interface Module Characteristics
MC68HC908QB8 Data Sheet, Rev. 3
Freescale Semiconductor 225
18.16 Timer Interface Module Characteristics
Figure 18-13. Timer Input Timing
Characteristic Symbol Min Max Unit
Timer input capture pulse width
(1)
1. Values are based on characterization results, not tested in production.
t
TH,
t
TL
2—t
cyc
Timer input capture period t
TLTL
Note
(2)
2. The minimum period is the number of cycles it takes to execute the interrupt service routine plus 1 t
cyc
.
—t
cyc
Timer input clock pulse width
(1)
t
TCL
, t
TCH
t
cyc
+ 5 — ns
INPUT CAPTURE
RISING EDGE
INPUT CAPTURE
FALLING EDGE
INPUT CAPTURE
BOTH EDGES
t
TH
t
TL
t
TLTL
t
TLTL
t
TLTL
t
TL
t
TH
TCLK
t
TCL
t
TCH