M16C62N Datasheet, PDF(72/213 Page) Renesas Technology Corp – SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

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M16C62N Datasheet, PDF (72/213 Pages) Renesas Technology Corp – SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

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Timer A

Mitsubishi microcomputers

M16C / 62N Group (80-pin)

SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

Timer Ai register (Note 1)

(b15)

(b8)

b0 b7

Symbol

TA0

TA1

TA2

TA3

TA4

Function

â¢ Timer mode

Counts an internal count source

Address

038716,038616

038916,038816

038B16,038A16

038D16,038C16

038F16,038E16

When reset

Indeterminate

Values that can be set R W

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

Up/down flag (Note 2)

b7 b6 b5 b4 b3 b2 b1 b0

Symbol

UDF

Address

038416

When reset

0016

Bit symbol

Bit name

Function

TA0UD

TA1UD

TA2UD

TA3UD

TA4UD

Timer A0 up/down flag

Timer A1 up/down flag

Timer A2 up/down flag

Timer A3 up/down flag

Timer A4 up/down flag

0 : Down count

1 : Up count

This specification becomes valid

when the up/down flag content is

selected for up/down switching

cause

TA2P

TA3P

TA4P

Timer A2 two-phase pulse 0 : two-phase pulse signal

signal processing select bit processing disabled

(Note 1) 1 : two-phase pulse signal

Timer A3 two-phase pulse

processing enabled (Note 3)

signal processing select bit

When not using the two-phase

Timer A4 two-phase pulse pulse signal processing function,

signal processing select bit set the select bit to â0â

Note 1: Since timer A2 have no pin to perform input/output, must set this bit to â0â .

Note 2: Use MOV instruction to write to this register.

Note 3: Set the TAiIN and TAiOUT pins correspondent port direction registers to â0â.

Figure 1.13.5. Timer A-related registers (2)

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