GMS81C2012 datasheet(61/107 Pages) HYNIX

Part #	GMS81C2012

Description	HYUNDAI MICRO ELECTRONICS 8-BIT SINGLE-CHIP MICROCONTROLLERS

PDF	107 Pages

Scroll/Zoom	100%

Manufacturer	HYNIX [Hynix Semiconductor]

Direct Link	http://www.skhynix.com/kor/main.do

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61 / 107 page

HYUNDAI MicroElectronics

GMS81C2012/GMS81C2020

MAR. 2000 Ver 1.00

Figure 12-13 Example of PWM at 4MHz

Figure 12-14 Example of Changing the Period in Absolute Duty Cycle (@4MHz)

Source

PWM1O

[POL=1]

PWM1O

[POL=0]

Duty Cycle [ 80H x 250nS = 32uS ]

Period Cycle [ 3FFH x 250nS = 255.75uS, 3.9KHz ]

PWM1HR = 0CH

T1PPR = FFH

T1PDR = 80H

T1CK[1:0] = 00 ( fXI )

PWM1HR3 PWM1HR2

PWM1HR1 PWM1HR0

T1PPR (8-bit)

T1PDR (8-bit)

Period

Duty

FFH

80H

clock

PWM1E

T1ST

T1CN

3FF

Source

PWM1O

POL=1

Duty Cycle

Period Cycle [ 0EH x 2uS = 28uS, 35.5KHz ]

PW M 1 HR = 0 0H

T 1 PPR = 0 E H

T 1 PDR = 0 5H

T1C K [1:0] = 10 ( 1uS )

0B 0C 0D 0E

01 02

06 07

01 02

03 04

[ 05H x 2uS = 10uS ]

Duty Cycle

[ 05H x 2uS = 10uS ]

Period Cycle [ 0AH x 2uS = 20uS, 50KHz ]

Duty Cycle

[ 05H x 2uS = 10uS ]

Write T1PPR to 0AH

Period changed

clock

GMS81C2012 Datasheet(PDF) 61 Page - Hynix Semiconductor

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