CHAPTER 7 8-BIT TIMER/EVENT COUNTERS 50 AND 51
Preliminary User’s Manual U16315EJ1V0UD
167
(2) 8-bit timer mode control register 5n (TMC5n)
TMC5n is a register that performs the following five types of settings.
<1>
8-bit timer counter 5n (TM5n) count operation control
<2>
8-bit timer counter 5n (TM5n) operating mode selection
<3>
Timer output F/F (flip-flop) status setting
<4>
Active level selection in timer F/F control or PWM (free-running) mode
<5>
Timer output control
TMC5n can be set by a 1-bit or 8-bit memory manipulation instruction.
RESET input clears this register to 00H.
Remark
n = 0, 1
Figure 7-5. Format of 8-Bit Timer Mode Control Register 50 (TMC50)
Address: FF6BH After reset: 00H R/W
Note
Symbol
7
6
5
4
3
2
1
0
TMC50
TCE50
TMC506
0
0
LVS50
LVR50
TMC501
TOE50
TCE50
TM50 count operation control
0
After clearing to 0, count operation disabled (counter stopped)
1
Count operation start
TMC506
TM50 operating mode selection
0
Mode in which clear & start occurs on a match between TM50 and CR50
1
PWM (free-running) mode
LVS50
LVR50
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 (TMC506 = 0)
In PWM mode (TMC506 = 1)
TMC501
Timer F/F control
Active level selection
0
Inversion operation disabled
Active-high
1
Inversion operation enabled
Active-low
TOE50
Timer output control
0
Output disabled (TO50 pin outputs the low level)
1
Output enabled
Note
Bits 2 and 3 are write-only.
(Refer to
Caution
and
Remark
on the page after the next.)