CHAPTER 7 8-BIT TIMERS 50, 60, AND 61
User’s Manual U15331EJ4V1UD
142
Table 7-7. Square-Wave Output Range of Timer 60
TCL602 TCL601 TCL600 Minimum Pulse Width Maximum Pulse Width Resolution
0 0 0 1/fX (0.2
µ
s) 28/fX (51.2
µ
s) 1/fX (0.2
µ
s)
0 0 1 22/fX (0.8
µ
s) 210/fX (204
µ
s) 22/fX (0.8
µ
s)
0 1 0 fTMI input cycle fTMI input cycle × 28 fTMI input cycle
0 1 1 fTMI/2 input cycle fTMI/2 input cycle × 28 fTMI/2 input cycle
1 0 0 fTMI/22 input cycle fTMI/22 input cycle × 28 fTMI/22 input cycle
1 0 1 fTMI/23 input cycle fTMI/23 input cycle × 28 fTMI/23 input cycle
Remarks 1. fX: Main system clock oscillation frequency
2. f
TMI: External input clock frequency
3. The parenthesized values apply to operation at fX = 5.0 MHz.
Table 7-8. Square-Wave Output Range of Timer 61
TCL612 TCL611 TCL610 Minimum Pulse Width Maximum Pulse Width Resolution
0 0 0 1/fX (0.2
µ
s) 28/fX (51.2
µ
s) 1/fX (0.2
µ
s)
0 0 1 24/fX (3.2
µ
s) 212/fX (819
µ
s) 24/fX (3.2
µ
s)
0 1 0 fTMI input cycle fTMI input cycle × 28 fTMI input cycle
0 1 1 fTMI/2 input cycle fTMI/2 input cycle × 28 fTMI/2 input cycle
1 0 0 fTMI/22 input cycle fTMI/22 input cycle × 28 fTMI/22 input cycle
1 0 1 fTMI/23 input cycle fTMI/23 input cycle × 28 fTMI/23 input cycle
Remarks 1. fX: Main system clock oscillation frequency
2. f
TMI: External input clock frequency
3. The parenthesized values apply to operation at fX = 5.0 MHz.
Figure 7-18. Timing of Square-Wave Output with 8-Bit Resolution
Count clock
CRnm
TCEnm
INTTMnm
TOnm
Note
N
TMnm N00H 01H N00H 01H N00H 01H
00H 01H
Clear Clear Clear
Count start
Interrupt acknowledgement Interrupt acknowledgement
Interrupt acknowledgement
Note The initial value of TOnm is low level when output is enabled.
Remark N = 00H to FFH
nm = 50, 60, 61