NEC uPD78P078 - Manual (Page 250)

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