Fujitsu MB89202 Computer Hardware User Manual


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CHAPTER 8 8/16-BIT CAPTURE TIMER/COUNTER
Table 8.1-1 to Table 8.1-3 show the interval time and square wave output range in each operation mode.
Table 8.1-1 Timer 0 Interval Time and Square Wave Output Range in 8-bit Mode
Count clock cycle Interval time Square wave output range (Hz)
Internal count clock
2t
INST
2t
INST
to 2
9
t
INST
1/ (2
2
t
INST
) to 1/ (2
10
t
INST
)
4t
INST
2
2
t
INST
to 2
10
t
INST
1/ (2
3
t
INST
) to 1/ (2
11
t
INST
)
16t
INST
2
4
t
INST
to 2
12
t
INST
1/ (2
5
t
INST
) to 1/ (2
13
t
INST
)
64t
INST
2
6
t
INST
to 2
14
t
INST
1/ (2
7
t
INST
) to 1/ (2
15
t
INST
)
128t
INST
2
7
t
INST
to 2
15
t
INST
1/ (2
8
t
INST
) to 1/ (2
16
t
INST
)
256t
INST
2
8
t
INST
to 2
16
t
INST
1/ (2
9
t
INST
) to 1/ (2
17
t
INST
)
512t
INST
2
9
t
INST
to 2
17
t
INST
1/ (2
10
t
INST
) to 1/ (2
18
t
INST
)
External clock
1t
ext
1t
ext
to 2
8
t
ext
1/ (2t
ext
) to 1/ (2
9
t
ext
)
Table 8.1-2 Timer 1 Interval Time and Square Wave Output Range in 8-bit Mode
Count clock cycle Interval time Square wave output range (Hz)
Internal count clock
2t
INST
2t
INST
to 2
9
t
INST
1/ (2
2
t
INST
) to 1/ (2
10
t
INST
)
4t
INST
2
2
t
INST
to 2
10
t
INST
1/ (2
3
t
INST
) to 1/ (2
11
t
INST
)
16t
INST
2
4
t
INST
to 2
12
t
INST
1/ (2
5
t
INST
) to 1/ (2
13
t
INST
)
64t
INST
2
6
t
INST
to 2
14
t
INST
1/ (2
7
t
INST
) to 1/ (2
15
t
INST
)
128t
INST
2
7
t
INST
to 2
15
t
INST
1/ (2
8
t
INST
) to 1/ (2
16
t
INST
)
256t
INST
2
8
t
INST
to 2
16
t
INST
1/ (2
9
t
INST
) to 1/ (2
17
t
INST
)
512t
INST
2
9
t
INST
to 2
17
t
INST
1/ (2
10
t
INST
) to 1/ (2
18
t
INST
)
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