NEC UPD789426 Series User Manual page 157

Table 7-6. Square-Wave Output Range of Timer 60 (During f
TCL6 TCL601 TCL600
02
0 0 0
0 0 1
0 1 0
0 1 1
1 0 0
1 0 1
Remark f : Main system clock oscillation frequency
X
Figure 7-15. Timing of Square-Wave Output with 8-Bit Resolution
Count clock
01H
00H
TMn0
CRn0
TCEn0
Count start
INTTMn0
Note
TOnm
Note The initial value of TOnm is low level when output is enabled (TOEnm = 1).
Remark n = 5, 6
nm = 50, 60, 61
CHAPTER 7 8-BIT TIMERS 50, 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
N 00H 01H
Clear
Interrupt acknowledgement
User's Manual U15075EJ2V1UD
= 5.0 MHz Operation)
X
Maximum Pulse Width
8
µ
2 /f (51.2 s)
X
10
2 /f (2.04 ms)
X
input cycle × 2
8
f
TMI
/2 input cycle × 2
8
f
TMI
input cycle × 2
2 8
f /2
TMI
input cycle × 2
3 8
f /2
TMI
00H 01H
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
N 01H
00H
Clear
Interrupt acknowledgement
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