Bit Timer/Event Counters 5 And 6 Interval Times - NEC PD78076 User Manual

(1) 8-bit interval timer
Interrupt requests are generated at the preset time intervals.
Table 10-1. 8-Bit Timer/Event Counters 5 and 6 Interval Times
Minimum Interval Width
MCS = 1 MCS = 0
—
(200 ns)
1/f 2 x 1/f
X
(200 ns) (400 ns)
2 x 1/f 2
X
(400 ns) (800 ns)
2
2 x 1/f 2
X
(800 ns) (1.6 s)
2 3 x 1/f 2
X
(1.6 s) (3.2 s)
2 4 x 1/f 2
X
(3.2 s) (6.4 s)
5
2 x 1/f 2
X
(6.4 s) (12.8 s)
6
2 x 1/f 2
X
(12.8 s) (25.6 s)
2 7 x 1/f 2
X
(25.6 s) (51.2 s)
2 8 x 1/f 2
X
(51.2 s) (102.4 s)
9
2 x 1/f 2
X
(102.4 s) (204.8 s)
11
2 x 1/f 2
X
(409.6 s) (819.2 s)
Remarks 1. f
X
2. MCS : Bit 0 of oscillation mode selection register (OSMS)
3. Figures in parentheses apply to operation with f
250
CHAPTER 10 8-BIT TIMER/EVENT COUNTERS 5 AND 6
Maximum Interval Width
MCS = 1
1/f —
X
2 8 x 1/f
X X
(51.2 s)
2 9
x 1/f 2 x 1/f
X X
(102.4 s)
3 10
x 1/f 2 x 1/f
X X
(204.8 s)
4 x 1/f 2 11 x 1/f
X X
(409.6 s)
5 x 1/f 2 12 x 1/f
X X
(819.2 s)
6 13
x 1/f 2 x 1/f
X X
(1.64 ms)
7 14
x 1/f 2 x 1/f
X X
(3.28 ms)
8 x 1/f 2 15 x 1/f
X X
(6.55 ms)
9 x 1/f 2 16 x 1/f
X X
(13.1 ms)
10 17
x 1/f 2 x 1/f
X X
(26.2 ms)
12 19
x 1/f 2 x 1/f
X X
(104.9 ms)
: Main system clock oscillation frequency
Resolution
MCS = 0 MCS = 1
2 8 x 1/f —
X
(51.2 s)
2 9 x 1/f 1/f
X X
(102.4 s) (200 ns)
10
2 x 1/f 2 x 1/f
X X
(204.8 s) (400 ns)
11 2
2 x 1/f 2 x 1/f
X X
(409.6 s) (800 ns)
2 12 x 1/f 2 3 x 1/f
X X
(819.2 s) (1.6 s)
2 13 x 1/f 2 4 x 1/f
X X
(1.64 ms) (3.2 s)
14 5
2 x 1/f 2 x 1/f
X X
(3.28 ms) (6.4 s)
15 6
2 x 1/f 2 x 1/f
X X
(6.55 ms) (12.8 s)
2 16 x 1/f 2 7 x 1/f
X X
(13.1 ms) (25.6 s)
2 17 x 1/f 2 8 x 1/f
X X
(26.2 ms) (51.2 s)
18 9
2 x 1/f 2 x 1/f
X X
(52.4 ms) (102.4 s)
20 11
2 x 1/f 2 x 1/f
X X
(209.7 ms) (409.6 s)
= 5.0 MHz.
X
MCS = 0
1/f
X
(200 ns)
2 x 1/f
X
(400 ns)
2
2 x 1/f
X
(800 ns)
3
2 x 1/f
X
(1.6 s)
2 4 x 1/f
X
(3.2 s)
2 5 x 1/f
X
(6.4 s)
6
2 x 1/f
X
(12.8 s)
7
2 x 1/f
X
(25.6 s)
2 8 x 1/f
X
(51.2 s)
2 9 x 1/f
X
(102.4 s)
10
2 x 1/f
X
(204.8 s)
12
2 x 1/f
X
(819.2 s)