NEC 78014Y Series User Manual page 200

(1) 8-bit interval timer
Interrupt requests are generated at the preset time intervals.
Remarks 1. f
2. Values in parentheses apply to operation with f
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200
CHAPTER 9 8-BIT TIMER/EVENT COUNTER
Table 9-1. 8-Bit Timer/Event Counter Interval Times
Minimum Interval Time
× 1/f
2 2 (400 ns)
X
× 1/f
3
2 (800 ns)
X
× 1/f (1.6 µ s)
2 4
X
(3.2 µ s)
× 1/f
2 5
X
× 1/f (6.4 µ s)
6
2
X
× 1/f (12.8 µ s)
2 7
X
× 1/f (25.6 µ s)
8
2
X
× 1/f (51.2 µ s)
2 9
X
× 1/f (102.4 µ s)
2 10
X
× 1/f (409.6 µ s)
12
2
X
: Main system clock oscillation frequency
X
Maximum Interval Time
(102.4 µ s)
× 1/f
2 10 2 2
X
× 1/f (204.8 µ s)
11 3
2 2
X
× 1/f (409.6 µ s)
2 12 2 4
X
(819.2 µ s)
× 1/f
2 13 2 5
X
× 1/f
14 6
2 (1.64 ms) 2
X
× 1/f
2 15 (3.28 ms) 2 7
X
× 1/f
16 8
2 (6.55 ms) 2
X
× 1/f
2 17 (13.1 ms) 2 9
X
× 1/f
2 18 (26.2 ms) 2 10
X
× 1/f
20 12
2 (104.9 ms) 2
X
= 10.0 MHz.
X
Resolution
× 1/f
(400 ns)
X
× 1/f
(800 ns)
X
× 1/f (1.6 µ s)
X
(3.2 µ s)
× 1/f
X
× 1/f (6.4 µ s)
X
× 1/f (12.8 µ s)
X
× 1/f (25.6 µ s)
X
× 1/f (51.2 µ s)
X
× 1/f (102.4 µ s)
X
× 1/f (409.6 µ s)
X