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HT45R4U Folha de dados(PDF) 8 Page - Holtek Semiconductor Inc

Nome de Peças HT45R4U
Descrição Electrónicos  TinyPowerTM A/D Type e-Banking ASSP OTP MCU with LCD
Download  105 Pages
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Fabricante Electrônico  HOLTEK [Holtek Semiconductor Inc]
Página de início  http://www.holtek.com
Logo HOLTEK - Holtek Semiconductor Inc

HT45R4U Folha de dados(HTML) 8 Page - Holtek Semiconductor Inc

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Rev. 1.10
8
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Rev. 1.10
9
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HT45R4U
TinyPowerTM A/D Type
e-Banking ASSP OTP MCU with LCD
Pin Assignment
47
46
45
44
43
42
41
21 22 23 24 25 26 2728 29 30 31 32
33
34
35
36
37
38
39
40
64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49
48
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17 18 19 20
HT 45 R4 U
64 L QF P- A
PA 7/ IN T1
PA0 /B Z
PA1 /B Z
PA 2/ IN T0
PA 3/ PF D
PA4 /T MR 2
PA5 /T MR 1
PE 1/ RE S
PL CD
VM AX
V1
V2
C1
C2
CO M0
CO M1
SE G2 /P C2
SE G3 /P C3
SE G4 /P C4
SE G5 /P C5
SE G6 /P C6
SE G7 /P C7
SE G8 /P D0
SE G9 /P D1
SE G1 0/ PD 2
SE G1 1/ PD 3
SE G1 2/ PD 4
SE G1 3/ PD 5
SE G1 4/ PD 6
SE G1 5/ PD 7
SE G1 6
SE G1 7
Pin Description
Thefollowingtabledepictsthepinscommontoalldevices.
Pin/Pad Name
I/O
Options
Description
PA0/BZ
PA1/BZ
PA�/INT0
PA3/PFD
PA4/T�R�
PA�/T�R1
PA6/AN1
PA7/INT1
I/O
Bidi�e�tional 8-bit input/output po�t. Ea�� individual bit on t�is po�t �an be
configured as a wake-up input by the PAWU register control bit. Software
inst�u�tions dete�mine if t�e pin is a C�OS output o� S��mitt t�igge� input.
A pull-�ig� �esisto� �an be �onne�ted to ea�� pin dete�mined by t�e PAPU
�egiste�.
PA6 is pin-s�a�ed wit� t�e A/D input pin. T�e A/D inputs a�e sele�ted via
softwa�e inst�u�tions. On�e an I/O line is sele�ted as an A/D input� t�e I/O
fun�tion and pull-�ig� �esisto� a�e disabled automati�ally.
T�e BZ� BZ� INT0� PFD� T�R�� T�R1 and INT1 a�e pin-s�a�ed wit�
PA0~PA � and PA7 �espe�tively.
PB0/OSC1
PB1/OSC�
PB�/AN�/T�R0
PB3/AN3~PB7/
AN7
I/O
HXT o�
HIRC o�
EC
Bidi�e�tional 8-bit input/output po�t. Softwa�e inst�u�tions dete�mine if t�e
pin is a C�OS output o� S��mitt t�igge� input. A pull-�ig� �esisto� �an be
�onne�ted to ea�� pin by t�e PBPU �egiste�.
T�e OSC1 and OSC� pins a�e �onne�ted to an exte�nal ��ystal o� used
as I/O pins, determined by configuration options, for the internal system
�lo�k. T�e inte�nal system �an also �ome f�om t�e inte�nal �ig� speed
RC oscillator, HIRC, which is selected by configuration options. When the
HIRC is sele�ted as t�e system os�illato�� t�e OSC1 and OSC� pins �an
be used as no�mal I/O pins. T�e abb�eviation EC stands fo� Exte�nal Clo�k
mode. In t�e EC mode� an exte�nal �lo�k sou��e is p�ovided on OSC1 as
t�e system �lo�k.
T�e AN�/T�R0 and AN3~AN7 pins a�e pin-s�a�ed wit� PB�~PB7
�espe�tively and �ont�olled by softwa�e �ont�ol �egiste�s
PC0/SEG0~PC7/
SEG7
I/O
Bidi�e�tional 8-bit input/output po�t. Softwa�e inst�u�tions dete�mine if t�e
pin is a C�OS output o� S��mitt t�igge� input. A pull-�ig� �esisto� �an be
�onne�ted to ea�� pin dete�mined by t�e PCPU �egiste�.
T�e SEG0~SEG7 pins a�e LCD d�ive� outputs fo� LCD panel segments
and a�e pin-s�a�ed wit� PC0~PC7 pins �espe�tively.


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