NEC mPD780204, User Manual

Page: 136 / 418

CHAPTER 6 16-BIT TIMER/EVENT COUNTER
136
User’s Manual U11302EJ4V0UM
Figure 6-11. Interval Timer Operation Timing
Remark Interval time = (N + 1) x t: N = 0001H to FFFFH
Table 6-5. 16-Bit Timer/Event Counter Interval Time
TCL06 TCL05 TCL04 Minimum Interval Time Maximum Interval Time Resolution
0 0 0 2 x TI0 input cycle 2
16
x TI0 input cycle TI0 input edge cycle
0 0 1 2 x 1/f
X
(400 ns) 2
16
x 1/f
X
(13.1 ms) 1/f
X
(200 ns)
0 1 0 2
2
x 1/f
X
(800 ns) 2
17
x 1/f
X
(26.2 ms) 2 x 1/f
X
(400 ns)
0 1 1 2
3
x 1/f
X
(1.6
µ
s) 2
18
x 1/f
X
(52.4 ms) 2
2
x 1/f
X
(800 ns)
1 0 0 2
4
x 1/f
X
(3.2
µ
s) 2
19
x 1/f
X
(104.9 ms) 2
3
x 1/f
X
(1.6
µ
s)
Other than above Setting prohibited
Remarks 1. f
X
: Main system clock oscillation frequency
2. Figures in parentheses apply to operation with f
X
= 5.0 MHz.
t
0000 TM0 count value
Count clock
CR00
INTTM0
TO0
0001 N 0000 0001 N 0000 0001 N
Count start Clear Clear
Interrupt request acknowledgment
N N N N
Interval time Interval time Interval time
Interrupt request acknowledgment