M16C62_M Datasheet, PDF(326/615 Page) Renesas Technology Corp – 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/60 SERIES

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M16C62_M Datasheet, PDF (326/615 Pages) Renesas Technology Corp – 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/60 SERIES

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Timer A

Mitsubishi microcomputers

M16C / 62A Group

SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

Timer Ai register (Note 1)

(b15)

b7

(b8)

b0 b7

Symbol

b0

TA0

TA1

TA2

TA3

TA4

Address

038716,038616

038916,038816

038B16,038A16

038D16,038C16

038F16,038E16

When reset

Indeterminate

Indeterminate

Indeterminate

Indeterminate

Indeterminate

Function

Values that can be set R W

â¢ Timer mode

Counts an internal count source

000016 to FFFF16

â¢ Event counter mode

000016 to FFFF16

Counts pulses from an external source or timer overflow

â¢ One-shot timer mode

Counts a one shot width

000016 to FFFF16

(Note 2,4)

â¢ Pulse width modulation mode (16-bit PWM)

Functions as a 16-bit pulse width modulator

000016 to FFFE16

(Note 3,4)

â¢ Pulse width modulation mode (8-bit PWM)

Timer low-order address functions as an 8-bit

prescaler and high-order address functions as an 8-bit

pulse width modulator

0016 to FE16

(High-order address)

0016 to FF16

(Low-order address)

(Note 3,4)

Note 1: Read and write data in 16-bit units.

Note 2: When the timer Ai register is set to â000016â, the counter does not

operate and the timer Ai interrupt request is not generated. When

the pulse is set to output, the pulse does not output from the TAiOUT

pin.

Note 3: When the timer Ai register is set to â000016â, the pulse width

modulator does not operate and the output level of the TAiOUT pin

remains âLâ level, therefore the timer Ai interrupt request is not

generated. This also occurs in the 8-bit pulse width modulator mode

when the significant 8 high-order bits in the timer Ai register are set

to â0016â.

Note 4: Use MOV instruction to write to this register.

Count start flag

b7 b6 b5 b4 b3 b2 b1 b0

Symbol

TABSR

Address

038016

When reset

0016

Bit symbol

TA0S

TA1S

TA2S

TA3S

TA4S

TB0S

TB1S

TB2S

Bit name

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

Timer B0 count start flag

Timer B1 count start flag

Timer B2 count start flag

Function

0 : Stops counting

1 : Starts counting

RW

Figure 2.2.3. Timer A-related registers (2)

2-9

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