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CHAPTER 7 8-BIT TIMER/EVENT COUNTERS 50 AND 51
Preliminary User’s Manual U16315EJ1V0UD
168
Figure 7-6. Format of 8-Bit Timer Mode Control Register 51 (TMC51)
Address: FF43H After reset: 00H R/W
Note
Symbol
7
6
5
4
3
2
1
0
TMC51
TCE51
TMC516
0
0
LVS51
LVR51
TMC511
TOE51
TCE51
TM51 count operation control
0
After clearing to 0, count operation disabled (counter stopped)
1
Count operation start
TMC516
TM51 operating mode selection
0
Mode in which clear & start occurs on a match between TM51 and CR51
1
PWM (free-running) mode
LVS51
LVR51
Timer output F/F status setting
0
0
No change
0
1
Timer output F/F reset (0)
1
0
Timer output F/F set (1)
1
1
Setting prohibited
In other modes (TMC516 = 0)
In PWM mode (TMC516 = 1)
TMC511
Timer F/F control
Active level selection
0
Inversion operation disabled
Active-high
1
Inversion operation enabled
Active-low
TOE51
Timer output control
0
Output disabled (TO51 pin outputs the low level)
1
Output enabled
Note
Bits 2 and 3 are write-only.
(Refer to
Caution
and
Remark
on the next page.)