IA186EB/IA188EB
Data Sheet
8-Bit/16-Bit Microcontrollers
July 10, 2011
Table 19. Clock Input and Output Characteristics for 3.3-Volt Operation
Item Symbol Parameter
Min
0
Max
32
Units Notes
–
XTF
clkin
MHz
–
Frequency
clkin Period
clkin High
Time
1
2
TC
TCH
30
15
∞
∞
ns
ns
–
Measure for VIH for high time, NIL for low
time.
3
4
5
6
TCL
TCR
TCF
clkin Low Time
15
1
∞
5
ns
ns
ns
ns
Measure for VIH for high time, NIL for low
time.
clkin Rise
Time
clkin Fall Time
Only required to guarantee ICC. Maximum
limits are bounded for TC, TCH and TCL.
Only required to guarantee ICC. Maximum
limits are bounded for TC, TCH and TCL.
Specified for a 50-pF load.
1
5
XTCD clkin to clkout
Delay
0
14.5
7
8
T
TPH
clkout Period
clkout High
Time
clkout Low
Time
clkout Rise
Time
clkout Fall
Time
–
2TC
(T/2)
+ 5
(T/2)
+ 5
ns
ns
–
(T/2)
– 5
(T/2)
– 5
1
Measure for VIH for high time, NIL for low
time.
Measure for VIH for high time, NIL for low
time.
Specified for a 50-pF load.
9
TPL
TPR
TPF
ns
ns
ns
10
11
6
1
6
Specified for a 50-pF load.
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