CHAPTER 7 16-BIT TIMER/EVENT COUNTER 0
User’s Manual U16896EJ2V0UD
242
Figure 7-8. Example of Register Settings for Square Wave Output Operation
(a) 16-bit timer mode control register 01 (TMC01)
0
0
0
0
1
1
0
0
TMC013 TMC012 TMC011
OVF01
Clears and starts on match
between TM01 and CR010.
(b) Capture/compare control register 01 (CRC01)
0
0
0
0
0
0
0
0
CRC012 CRC011 CRC010
CR010 used as
compare register
(c) 16-bit timer output control register 01 (TOC01)
0
0
0
0
0/1
LVR01
LVS01
TOC014
OSPE01
OSPT01
TOC011
TOE01
Enables TO01 pin output.
Inverts TO01 pin output on match
between TM01 and CR010.
Specifies the initial value of
TO01 output F/F.
0/1
1
1
(d) Prescaler mode register 01 (PRM01), selector operation control register 1 (SELCNT1)
0
PRM01
0
0
0
0
PRM011
PRM010
SELCNT1
ES111
ES110
ES101
ES100
Selects count clock.
0
0/1
0/1
ISEL11
0/1
(e) 16-bit timer counter 01 (TM01)
By reading the TM01 register, the count value can be read.
(f) 16-bit capture/compare register 010 (CR010)
If M is set to the CR010 register, the square wave frequency is as follows.
1 / [2
×
(M + 1)
×
Count clock cycle]
Setting the CR010 register to 0000H is prohibited.
(g) 16-bit capture/compare register 011 (CR011)
Usually, the CR011 register is not used for the square wave output function. However, a compare match
interrupt (INTTM011) is generated when the set value of the CR011 register matches the value of the
TM01 register.
Therefore, mask the interrupt request by using the interrupt mask flag (TM0MK11).