M30620FCAFP datasheet(344/615 Pages) RENESAS

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Timer A

Mitsubishi microcomputers

M16C / 62A Group

SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

2-27

Figure 2.2.21. Set-up procedure of one-shot mode

Pulse output function select bit

1 : Pulse is output

Selecting one-shot timer mode and functions

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

TAiMR (i=0 to 4)

External trigger select bit

When internal trigger is selected, this bit can be “1” or “0”

Selection of one-shot timer mode

0 (Must always be “0” in one-shot timer mode)

Count source select bit

0 0 : f1

0 1 : f8

1 0 : f32

1 1 : fC32

b7 b6

Trigger select bit

0 : When the one-shot start flag is set “1”

Setting one-shot timer's time

Can be set to 000116 to FFFF16

(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 start 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 one-shot start flag

One-shot start flag [Address 038216]

ONSF

Timer A0 one-shot start flag

Timer A1 one-shot start flag

Timer A2 one-shot start flag

Timer A3 one-shot start flag

Timer A4 one-shot start flag

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”)

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 (one shot timer mode)'

Count source period

f(XIN) : 16MHZ

f(XcIN) : 32.768kHZ

b7 b6

Count

source

62.5ns

500ns

2µs

976.56µs

f32

fC32

M30620FCAFP Datasheet(PDF) 344 Page - Renesas Technology Corp

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