16-Bit Timer/Event Counter Mode; Interval Time When 8-Bit Timer/Event Counter Is Used As 16-Bit Timer/Event Counter - NEC mPD780208 Subseries User Manual

7.1.2 16-bit timer/event counter mode

(1) 16-bit interval timer
Interrupt requests can be generated at the preset time intervals.
Table 7-3. Interval Time When 8-Bit Timer/Event Counter Is Used as 16-Bit Timer/Event Counter
Minimum Interval Time
2 x 1/f (400 ns)
X
2
2 x 1/f (800 ns)
X
(1.6 µ s)
2 3 x 1/f
X
(3.2 µ s)
4
2 x 1/f
X
(6.4 µ s)
2 5 x 1/f
X
(12.8 µ s)
6
2 x 1/f
X
(25.6 µ s)
2 7 x 1/f
X
(51.2 µ s)
2 8 x 1/f
X
(102.4 µ s)
9
2 x 1/f
X
(204.8 µ s)
2 10 x 1/f
X
(819.2 µ s)
12
2 x 1/f
X
Remarks 1. f : Main system clock oscillation frequency
X
2. Figures in parentheses apply to operation with f
148
CHAPTER 7 8-BIT TIMER/EVENT COUNTER
Maximum Interval Time
2 17 x 1/f (26.2 ms)
X
18
2 x 1/f (52.4 ms)
X
2 19 x 1/f (104.9 ms)
X
20
2 x 1/f (209.7 ms)
X
2 21 x 1/f (419.4 ms)
X
22
2 x 1/f (838.9 ms)
X
2 23 x 1/f (1.7 s)
X
2 24 x 1/f (3.4 s)
X
25
2 x 1/f (6.7 s)
X
2 26 x 1/f (13.4 s)
X
28
2 x 1/f (53.7 s)
X
User's Manual U11302EJ4V0UM
2 x 1/f (400 ns)
X
2
2 x 1/f (800 ns)
X
(1.6 µ s)
2 3 x 1/f
X
(3.2 µ s)
4
2 x 1/f
X
(6.4 µ s)
2 5 x 1/f
X
(12.8 µ s)
6
2 x 1/f
X
(25.6 µ s)
2 7 x 1/f
X
(51.2 µ s)
2 8 x 1/f
X
(102.4 µ s)
9
2 x 1/f
X
(204.8 µ s)
2 10 x 1/f
X
(819.2 µ s)
12
2 x 1/f
X
= 5.0 MHz.
X
Resolution