NEC mPD789425, User Manual

Page: 144 / 321

CHAPTER 7 8-BIT TIMER
144
User’s Manual U15075EJ1V0UM00
Table 7-3. Interval Time of Timer 50
TCL502 TCL501 TCL500 Minimum Interval Time Maximum Interval Time Resolution
0 0 0 1/f
X
(0.2
µ
s) 2
8
/f
X
(51.2
µ
s) 1/f
X
(0.2
µ
s)
0 0 1 2
3
/f
X
(1.6
µ
s) 2
11
/f
X
(409.6
µ
s) 2
3
/f
X
(1.6
µ
s)
0 1 0 2
7
/f
X
(25.6
µ
s) 2
15
/f
X
(6.55 ms) 2
7
/f
X
(25.6
µ
s)
0 1 1 1/f
XT
(30.5
µ
s) 2
8
/f
XT
(7.81 ms) 1/f
XT
(30.5
µ
s)
1 0 0 Input cycle of timer 60 match
signal
Input cycle of timer 60 match
signal
×
8
Input cycle of timer 60 match
signal
1 0 1 Input cycle of timer 60 output Input cycle of timer 60 output
×
8
Input cycle of timer 60
Remarks 1. f
X
: Main system clock oscillation frequency
2. f
XT
: Subsystem clock oscillation frequency
Table 7-4. Interval Time of Timer 60
TCL602 TCL601 TCL600 Minimum Interval Time Maximum Interval Time Resolution
0 0 0 1/f
X
(0.2
µ
s) 2
8
/f
X
(51.2
µ
s) 1/f
X
(0.2
µ
s)
0 0 1 2/f
X
(0.4
µ
s) 2
9
/f
X
(1.02
µ
s) 2/f
X
(0.4
µ
s)
0 1 0 f
TMI
input cycle f
TMI
input cycle
×
2
8
f
TMI
input cycle
0 1 1 f
TMI
/2 input cycle f
TMI
/2 input cycle
×
2
8
f
TMI
/2 input cycle
1 0 0 f
TMI
/2
2
input cycle f
TMI
/2
2
input cycle
×
2
8
f
TMI
/2
2
input cycle
1 0 1 f
TMI
/2
3
input cycle f
TMI
/2
3
input cycle
×
2
8
f
TMI
/2
3
input cycle
Remark f
X
: Main system clock oscillation frequency