UPD17062 datasheet(103/298 Pages) RENESAS

103 / 298 page

101

µPD17062

10.5.5

PWM Data Register

Fig. 10-8 shows how the PWM data register functions.

The PWM data register sets the duty cycle of the 6-bit D/A converter (PWM output) output.

The 6-bit D/A converter has four channels (pins PWM3, PWM2, PWM1, and PWM0). Because the duty cycle

can be set independently for each channel, four independent PWM duty cycle registers are also provided.

Fig. 10-8

PWM Data Register Functions

DBF3

0CH

DBF2

0DH

DBF1

0EH

DBF0

0FH

b15 b14 b13 b12

b11 b10

PWMR0

05H

Set the PWM output duty of each pin.

Use PWM pins as D/A converter.

Duty D =

x + 0.75

PWM0 pin

PWM0

data register

PWMR1

06H

PWM1 pin

PWM1

data register

PWMR2

07H

PWM2 pin

PWM2

data register

PWMR3

08H

PWM3 pin

PWM3

data register

(%)

Use PWM as 1-bit output pin.

Output contents of b5.

Symbol

Peripheral

address

Peripheral hardware

Name

Peripheral register

Name

Data buffer

Symbol

Address

Bit

Data

Don't care

Transfer data

GET

PUT

Valid data

Frequency f = 15.625 kHz

(f: PWM output repetition frequency)

UPD17062 데이터시트(PDF) 103 Page - Renesas Technology Corp

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