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GMS81C2112 Datasheet(PDF) 60 Page - Hynix Semiconductor

No. de Pieza. GMS81C2112
Descripción  HYNIX SEMICONDUCTOR 8-BIT SINGLE-CHIP MICROCONTROLLERS
Descarga  107 Pages
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Fabricante  HYNIX [Hynix Semiconductor]
Página de inicio  http://www.skhynix.com/ko/index.jsp
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GMS81C2112 Datasheet(HTML) 60 Page - Hynix Semiconductor

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GMS81C2112/GMS81C2120
54
JUNE. 2001 Ver 1.00
If it needed more higher frequency of PWM, it should be
reduced resolution.
The bit POL of TM1 decides the polarity of duty cycle.
If the duty value is set same to the period value, the PWM
output is determined by the bit POL (1: High, 0: Low). And
if the duty value is set to "00H", the PWM output is deter-
mined by the bit POL (1: Low, 0: High).
It can be changed duty value when the PWM output. How-
ever the changed duty value is output after the current pe-
riod is over. And it can be maintained the duty value at
present output when changed only period value shown as
Figure 12-14. As it were, the absolute duty time is not
changed in varying frequency. But the changed period val-
ue must greater than the duty value.
Figure 12-12 PWM Mode
Resolution
Frequency
T1CK[1:0]
= 00(250nS)
T1CK[1:0]
= 01(500nS)
T1CK[1:0]
= 10(2uS)
10-bit
3.9KHz
0.98KHZ
0.49KHZ
9-bit
7.8KHz
1.95KHz
0.97KHz
8-bit
15.6KHz
3.90KHz
1.95KHz
7-bit
31.2KHz
7.81KHz
3.90KHz
Table 12-2 PWM Frequency vs. Resolution at 4MHz
÷ 1
÷ 2
÷ 8
PWM1HR
ADDRESS : D5H
RESET VALUE : ----0000
-
-
-
-
PWM1HR3PWM1HR2PWM1HR1PWM1HR0
---
-
XXX
X
MUX
1
T1CN
T1CK[1:0]
T1 ( 8-bit )
T1ST
0 : Stop
1 : Clear and Start
CLEAR
COMPARATOR
COMPARATOR
T1PDR(8-bit)
PWM1HR[1:0]
T1PPR(8-bit)
PWM1HR[3:2]
T1PDR(8-bit)
SQ
R
POL
PWM1O
R56/
PWM1O/T1O
T0 clock source
fXI
TM1
ADDRESS : D2H
RESET VALUE : 00000000
POL
16BIT
PWM1E
CAP1
T1CK1
T1CK0
T1CN
T1ST
X
010
XXX
X
[R5FUNC.6]
Period High
Duty High
Slave
Master
Bit Manipulation Not Available
X : The value "0" or "1" corresponding your operation.
[T0CK]
(2-bit)


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