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HT45R4U датащи(PDF) 59 Page - Holtek Semiconductor Inc

номер детали HT45R4U
подробное описание детали  TinyPowerTM A/D Type e-Banking ASSP OTP MCU with LCD
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производитель  HOLTEK [Holtek Semiconductor Inc]
домашняя страница  http://www.holtek.com
Logo HOLTEK - Holtek Semiconductor Inc

HT45R4U датащи(HTML) 59 Page - Holtek Semiconductor Inc

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Rev. 1.10
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HT45R4U
TinyPowerTM A/D Type
e-Banking ASSP OTP MCU with LCD
PAC0 Control bit
PA0 Data bit
PA0 Output Function
0
0
PA0 = "0"
0
1
PA0 = BZ
1
0
PA0 = input line
1
1
PA0 = input line
PA0 Pin Function Control (ENBZ=1)
PAC1 Control bit
PA0 Data bit
PA1 Output Function
0
0
PA1 = "0"
0
1
PA1 = BZ
1
0
PA1 = input line
1
1
PA1 = input line
PA1 Pin Function Control (ENBZB=1)
BZC Register
Bit
7
6
5
4
3
2
1
0
Name
ENBZ
ENBZB
BZ�
BZ1
BZ0
R/W
R/W
R/W
R/W
R/W
R/W
POR
0
0
0
0
0
Bit7~5
unimplemented,readas"0"
Bit4
ENBZ:BZPinFunctionSelection
0:I/Ofunction
1:BZfunction
Bit3
ENBZB:BZPinFunctionSelection
0:I/Ofunction
1:BZfunction
Bit2~0
BZ2~BZ0:BuzzerOutputFrequencySelection
000:fSUB/22
001:fSUB/23
010:fSUB/24
011:fSUB/25
100:fSUB/26
101:fSUB/27
110:fSUB/28
111:fSUB/29
In te r nal C lo ck S our ce
PA 0 Da ta
BZ O ut put a t PA 0
BZ O ut put a t PA1
PA 1 Da ta
Buzzer Output Pin Control
Note:TheabovedrawingshowsthesituationwherebothpinsPA0andPA1areselectedbysoftware
controlbitstobeBZandBZbuzzerpinoutputs.ThePortControlRegisterofbothpinsmust
havealreadybeensetupasoutput.ThedatasetuponpinPA1hasnoeffectonthebuzzeroutputs.


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