Timing Of Square-Wave Output With 8-Bit Resolution; Square-Wave Output Range Of Timer 60; Square-Wave Output Range Of Timer 61 - NEC PD789488 User Manual

TCL602 TCL601 TCL600
0 0 0
0 0 1
0 1 0
0 1 1
1 0 0
1 0 1
Remarks 1. f : Main system clock oscillation frequency
X
2. f : External input clock frequency
TMI
3. The parenthesized values apply to operation at f
TCL612 TCL611 TCL610
0 0 0
0 0 1
0 1 0
0 1 1
1 0 0
1 0 1
Remarks 1. f : Main system clock oscillation frequency
X
2. f : External input clock frequency
TMI
3. The parenthesized values apply to operation at f
Figure 7-18. Timing of Square-Wave Output with 8-Bit Resolution
Count clock
00H
TMnm
CRnm
TCEnm
Count start
INTTMnm
Note
TOnm
Note The initial value of TOnm is low level when output is enabled.
Remark N = 00H to FFH
nm = 50, 60, 61
142
CHAPTER 7 8-BIT TIMERS 50, 60, AND 61
Table 7-7. Square-Wave Output Range of Timer 60
Minimum Pulse Width
µ
1/f (0.2 s)
X
2
µ
2 /f (0.8 s)
X
f input cycle
TMI
f /2 input cycle
TMI
2
f /2 input cycle
TMI
3
f /2 input cycle
TMI
Table 7-8. Square-Wave Output Range of Timer 61
Minimum Pulse Width
µ
1/f (0.2 s)
X
4
µ
2 /f (3.2 s)
X
f input cycle
TMI
f /2 input cycle
TMI
2
f /2 input cycle
TMI
3
f /2 input cycle
TMI
01H 00H 01H
N
Clear
Interrupt acknowledgement
User's Manual U15331EJ4V1UD
Maximum Pulse Width
8
µ
2 /f (51.2 s)
X
10
µ
2 /f (204 s)
X
8
input cycle × 2
f
TMI
8
/2 input cycle × 2
f
TMI
2 8
f /2 input cycle × 2
TMI
3 8
f /2 input cycle × 2
TMI
= 5.0 MHz.
X
Maximum Pulse Width
8
µ
2 /f (51.2 s)
X
12
µ
2 /f (819 s)
X
8
f input cycle × 2
TMI
8
f /2 input cycle × 2
TMI
2 8
input cycle × 2
f /2
TMI
3 8
input cycle × 2
f /2
TMI
= 5.0 MHz.
X
00H 01H N
N
Clear
N
Interrupt acknowledgement
Resolution
µ
1/f (0.2 s)
X
2
µ
2 /f (0.8 s)
X
f input cycle
TMI
f /2 input cycle
TMI
2
f /2 input cycle
TMI
3
f /2 input cycle
TMI
Resolution
µ
1/f (0.2 s)
X
4
µ
2 /f (3.2 s)
X
f input cycle
TMI
f /2 input cycle
TMI
2
f /2 input cycle
TMI
3
f /2 input cycle
TMI
00H 01H
Clear
Interrupt acknowledgement