M30620FCAFP datasheet(348/615 Pages) RENESAS

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Timer A

Mitsubishi microcomputers

M16C / 62A Group

SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

2-31

Setting PWM pulse's “H” level width

Can be set to 000016 to FFFE16

(b15)

(b8)

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

Start count

Setting count starts flag

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

Setting event/trigger select bit

One-shot start flag [Address 038216]

ONSF

Timer A0 event/trigger select bit

0 0 : Input on TA0IN is selected (Note 2)

b7 b6

Timer A1 event/trigger select bit

0 0 : Input on TA1IN is selected (Note 2)

b1 b0

Timer A2 event/trigger select bit

0 0 : Input on TA2IN is selected (Note 2)

b3 b2

Timer A3 event/trigger select bit

0 0 : Input on TA3IN is selected (Note 2)

b5 b4

Timer A4 event/trigger select bit

0 0 : Input on TA4IN is selected (Note 2)

b7 b6

Note 2: Set the corresponding port direction register to “0”.

Trigger select register [Address 038316]

TRGSR

1 (Must always be “1” in PWM mode)

Selecting PWM mode and functions

Timer Ai mode register (i=0 to 4) [Address 039616 to 039A16]

TAiMR (i=0 to 4)

External trigger select bit

1 : Rising edge of TAiIN pin's input signal (Note 1)

Selection of PWM mode

16/8-bit PWM mode select bit

0 : Functions as a 16-bit pulse width modulator

b7 b6

Count source select bit

0 0 : f1

0 1 : f8

1 0 : f32

11 : fC32

Trigger select bit

1 : Selected by event/trigger select register

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.)

Clock prescaler reset flag [Address 038116]

CPSRF

Clock prescaler reset flag

0 : No effect

1 : Prescaler is reset (When read, the value is “0”)

Note 1: Set the corresponding port direction

Clearing timer Ai interrupt request bit

Timer Ai interrupt control register [Address 005516 to 005916]

TAiIC (i=0 to 4)

Interrupt request bit

Refer to 'Precaution for Timer A (pulse width modulation mode)'

Count source period

f(XIN) : 16MHZ

f(XcIN) : 32.768kHZ

b7 b6

Count

source

62.5ns

500ns

2µs

976.56µs

f32

fC32

Figure 2.2.25. Set-up procedure of pulse width modulation mode, 16-bit PWM mode selected

M30620FCAFP Datasheet(PDF) 348 Page - Renesas Technology Corp

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