NEC PD78076, User Manual

Page: 184 / 627

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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