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HT45F65 Datasheet(PDF) 152 Page - Holtek Semiconductor Inc

Part # HT45F65
Description  Glucose Meter 8-Bit Flash MCU
PDF  231 Pages
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Manufacturer  HOLTEK [Holtek Semiconductor Inc]
Direct Link  http://www.holtek.com
Logo HOLTEK - Holtek Semiconductor Inc

HT45F65 Datasheet(HTML) 152 Page - Holtek Semiconductor Inc

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Rev. 1.60
1��
�ove��e� ��� �01�
Rev. 1.60
1�3
�ove��e� ��� �01�
HT45F65/HT45F66/HT45F67
Glucose Meter 8-Bit Flash MCU
Bandgap
Thebandgapcircuitisasfollowringfigure,whichconsistsof8-bitDAC,bandgap,OPAand
resistorsandprovidesaccuratereferencevoltagetoADCandDAC,andoutputreferencevoltageis
selectedbyBGOS[1:0].The8-bitDACofferamoreaccuratereferencevoltagetoothercircuit.
BA�DGAP
6.��K
11K
80K
(if R-�R output i�pedance=�0K)
DACVREF
8-�its
T�i� to ±0.0��%
T�i� to ±3%
8-�it
R-�R
DAC
BGC Register
Bit
7
6
5
4
3
2
1
0
�a�e
—
—
—
BGE�
—
—
BGOS1
BGOS0
R/W
—
—
—
R/W
—
—
R/W
R/W
POR
—
—
—
0
—
—
0
0
Bit7~5
Unimplemented,readas"0"
Bit4
BGEN:Bandgapcontrol
0:disable
1:enable
Whenthisbitisequalto0,thebandgapenterspowerdownmode.
Bit3~2
Unimplemented,readas"0"
Bit1~0
BGOS1, BGOS0:Bandgapoutputselection.
0x:2.0V
10:AVDD
11:highimpedance(floating)
PVREF Register
Bit
7
6
5
4
3
2
1
0
�a�e
D7
D6
D�
D�
D3
D�
D1
D0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
POR
0
0
0
0
0
0
0
0
Bit7~0
D7~D0:8-bitDACoutputforbandgapfineturn



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