M16CSLASH62M datasheet(336/615 Pages) RENESAS

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Timer A

Mitsubishi microcomputers

M16C / 62A Group

SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

2-19

Figure 2.2.13. Set-up procedure of event counter mode, reload type selected

Selecting event counter mode and functions

Pulse output function select bit

0 : Pulse is not output (TAiOUT pin is a normal port pin)

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

TAiMR (i=0 to 4)

Up/down switching cause select bit

0 : Up/down flag's content

Selection of event counter mode

Invalid in event counter mode (i = 0, 1)

Invalid when not using two-phase pulse signal processing(i = 2 to 4)

Count operation type select bit

0 : Reload type

0 (Must always be “0” in event counter mode)

Count polarity select bit

0 : Counts external signal's falling edge

Up/down flag [Address 038416]

UDF

Timer A0 up/down flag

0 : Down count

Timer A1 up/down flag

0 : Down count

Timer A2 up/down flag

0 : Down count

Timer A3 up/down flag

0 : Down count

Timer A4 up/down flag

0 : Down count

When not using the 2-phase pulse signal processing function, set the select bit to “0”.

Setting one-shot start flag and trigger select register

Trigger select register [Address 038316]

TRGSR

One-shot start flag [Address 038216]

ONSF

Timer A0 event/trigger select bit

0 0 : Input on TA0IN is selected (Note)

b7 b6

Timer A1 event/trigger select bit

0 0 : Input on TA1IN is selected (Note)

b1 b0

Timer A2 event/trigger select bit

0 0 : Input on TA2IN is selected (Note)

b3 b2

Timer A3 event/trigger select bit

0 0 : Input on TA3IN is selected (Note)

b5 b4

Timer A4 event/trigger select bit

0 0 : Input on TA4IN is selected (Note)

b7 b6

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

Setting counter value

Can be set to 000016 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 up/down flag

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