NEC uPD78P078 User Manual
Page 184
184
CHAPTER 8 16-BIT TIMER/EVENT COUNTER
(5) Square-wave output
TM0 can output a square wave with any selected frequency.
Table 8-3. 16-Bit Timer/Event Counter Square-Wave Output Ranges
Minimum Pulse Width
Maximum Pulse Width
Resolution
MCS = 1
MCS = 0
MCS = 1
MCS = 0
MCS = 1
MCS = 0
2 x TI00 input cycle
2
16
x TI00 input cycle
TI00 input edge cycle
2 x 1/f
X
2
16
x 1/f
X
1/f
X
(400 ns)
(13.1 ms)
(200 ns)
2 x 1/f
X
2
2
x 1/f
X
2
16
x 1/f
X
2
17
x 1/f
X
1/f
X
2 x 1/f
X
(400 ns)
(800 ns)
(13.1 ms)
(26.2 ms)
(200 ns)
(400 ns)
2
2
x 1/f
X
2
3
x 1/f
X
2
17
x 1/f
X
2
18
x 1/f
X
2 x 1/f
X
2
2
x 1/f
X
(800 ns)
(1.6
µ
s)
(26.2 ms)
(52.4 ms)
(400 ns)
(800 ns)
2
3
x 1/f
X
2
4
x 1/f
X
2
18
x 1/f
X
2
19
x 1/f
X
2
2
x 1/f
X
2
3
x 1/f
X
(1.6
µ
s)
(3.2
µ
s)
(52.4 ms)
(104.9 ms)
(800 ns)
(1.6
µ
s)
2 x watch timer output cycle
2
16
x watch timer output cycle
Watch timer output edge cycle
Remarks 1. f
X
: Main system clock oscillation frequency
2. MCS : Bit 0 of oscillation mode selection register (OSMS)
3. Figures in parentheses operation with f
X
= 5.0 MHz.
(6) One-shot pulse output
TM0 is able to output one-shot pulse which can set any width of output pulse.
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