參數(shù)資料
型號(hào)： HT49C50
廠商： Holtek Semiconductor Inc.
元件分類： 8位微控制器
英文描述： 8-BIT MICROCONTROLLER
中文描述： 8位微控制器
文件頁(yè)數(shù)： 27/52頁(yè)
文件大?。?/td> 318K
代理商： HT49C50
HT49C50
27
August 18, 1999
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LCD driver output (1/3 duty, 1/2 bias, R/C type)
LCD driver output
The output number of the HT49C50 LCD driver
can be 33 2 or 33 3 or 32 4 by mask option (i.e.,
1/2 duty or 1/3 duty or 1/4 duty). The bias type of
LCD driver can be R type or C type. If the R
bias type is selected, no external capacitor is re-
quired. If the C bias type is selected, a capacitor
mounted between C1 and C2 pins is needed. The
bias voltage of LCD driver can be 1/2 bias or 1/3
bias by mask option. If 1/2 bias is selected, a ca-
pacitor mounted between V2 pin and ground is
required.If1/3biasisselected,twocapacitorsare
needed for V1 and V2 pins. Refer to application
diagram.
Buzzer
HT49C50 provides a pair of buzzer output BZ
and BZ, which share pins with PA0 and PA1 re-
spectively, ad determined by mask option. Its
output frequency can be selected by mask op-
tion.
When the buzzer function is selected, setting
the PA.0 and PA.1 0 simultaneously, will en-
ables the buzzer output and sets the PA.0 1 to
disable the buzzer output.
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