M16C62_M Datasheet, PDF (350/615 Pages) Renesas Technology Corp – 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/60 SERIES

Timer A
Mitsubishi microcomputers
M16C / 62A Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
Selecting PWM mode and function
b7
b0
1 1 0 1 11
Timer Ai mode register (i=0 to 4) [Address 039616 to 039A16]
TAiMR (i=0 to 4)
Selection of PWM mode
1 (Must always be “1” in PWM mode)
External trigger select bit
0 : Falling edge of TAiIN pin's input signal (Note1)
Trigger select bit
1 : Selected by event/trigger select register
16/8-bit PWM mode select bit
1: Functions as an 8-bit pulse width modulator
Note 1: Set the corresponding port direction
register to “0”.
Count source select bit
b7 b6
0 0 : f1
0 1 : f8
1 0 : f32
1 1 : fC32
b7 b6
00
01
10
11
Count
source
f1
f8
f32
fC32
Count source period
f(XIN) : 16MHZ f(XcIN) : 32.768kHZ
62.5ns
500ns
2µs
976.56µs
Clearing timer Ai interrupt request bit Refer to 'Precaution for Timer A (pulse width modulation mode)'
b7
b0
0
Timer Ai interrupt control register [Address 005516 to 005916]
TAiIC (i=0 to 4)
Interrupt request bit
Setting event/trigger select bit
b7
b0
b7
One-shot start flag [Address 038216]
ONSF
Timer A0 event/trigger select bit
b7 b6
0 0 : Input on TA0IN is selected (Note 2)
Note 2: Set the corresponding port direction register to “0”.
b0
Trigger select register [Address 038316]
TRGSR
Timer A1 event/trigger select bit
b1 b0
0 0 : Input on TA1IN is selected (Note 2)
Timer A2 event/trigger select bit
b3 b2
0 0 : Input on TA2IN is selected (Note 2)
Timer A3 event/trigger select bit
b5 b4
0 0 : Input on TA3IN is selected (Note 2)
Timer A4 event/trigger select bit
b7 b6
0 0 : Input on TA4IN is selected (Note 2)
Setting PWM pulse's period and “H” level width
(b15)
b7
(b8)
b0 b7
b0 Timer A0 register [Address 038716, 038616] TA0
Timer A1 register [Address 038916, 038816] TA1
Timer A2 register [Address 038B16, 038A16] TA2
Timer A3 register [Address 038D16, 038C16] TA3
Timer A4 register [Address 038F16, 038E16] TA4
Can be set to 0016 to FF16
Can be set to 0016 to FE16
Setting clock prescaler reset flag
(This function is effective when fC32 is selected as the count source. Reset the prescaler for generating fC32 by dividing the XCIN by 32.)
b7
b0
Clock prescaler reset flag [Address 038116]
CPSRF
Clock prescaler reset flag
0 : No effect
1 : Prescaler is reset (When read, the value is “0”)
Setting count start flag
b7
b0
Count start flag [Address 038016]
TABSR
Timer A0 count start flag
Timer A1 count start flag
Timer A2 count start flag
Timer A3 count start flag
Timer A4 count start flag
Start count
Figure 2.2.27. Set-up procedure of pulse width modulation mode, 8-bit PWM mode selected
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