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HT67F488 датащи(PDF) 104 Page - Holtek Semiconductor Inc

номер детали HT67F488
подробное описание детали  TinyPowerTM A/D Flash MCU with LCD & EEPROM
PDF  171 Pages
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производитель  HOLTEK [Holtek Semiconductor Inc]
домашняя страница  http://www.holtek.com
Logo HOLTEK - Holtek Semiconductor Inc

HT67F488 датащи(HTML) 104 Page - Holtek Semiconductor Inc

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Rev. 1.60
104
�ove��e� ��� �016
HT67F488/HT67F489
TinyPowerTM A/D Flash MCU with LCD & EEPROM
LCD Control Register
LCDC0 Register
Bit
7
6
5
4
3
2
1
0
�a�e
LCDE�
TYPE
DTYC
BIAS
—
RSEL�
RSEL1
RSEL0
R/W
R/W
R/W
R/W
R/W
—
R/W
R/W
R/W
POR
0
0
0
0
—
0
0
0
Bit7
LCDEN:LCDenable/disablecontrol
0:Disable
1:Enable
NotethattheLCDdriverandA/Dconvertershouldnotbeenabledsimultaneously
whentheLCDoutputandA/Dchannelaresharedwiththesamepin.
Bit6
TYPE:LCDWaveformTypeselection
0:TypeA
1:TypeB
Bit5
DTYC:DefineLCDDuty
0:1/4Duty(LCDCOM:COM0~COM3)
1:1/8Duty(LCDCOM:COM0~COM7)
Note:IfDTYC=1,thenCOM4~COM7pinswillbeconfiguredasLCDCOM.
IfDTYC=0,thenCOM4~COM7pinswillbeconfiguredasI/O.
Bit4
BIAS:DefineLCDBias
0:1/3Bias
1:1/4Bias
Bit3
Unimplemented,readas“0”
Bit2~0
RSEL2~RSEL0:TotalBiasResistorRTselection
000:1170K
001:225K
010:60K
011:QuickChargingMode,switchbetween60Kand1170K.
1xx:QuickChargingMode,switchbetween60Kand225K.
Note:Thebiasresistorfor1/3biasisRT/3,1/4biasisRT/4.
ThedevicesprovidelowpowerquickchargingmodeforLCDdisplay.Inquickchargingmode,
theLCDwillprovideLCDbiascurrentbyRT=60K,atbeginningofLCDdisplayrefreshes(i.e
themomentonLCDCOMchanges).Afterquickchargingtime,thebiasresistorwillchangeto
225K/1170K.



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