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HT66F40 数据表(PDF) 68 Page - Holtek Semiconductor Inc

部件名 HT66F40
功能描述  Enhanced A/D Flash Type MCU 8-Bit MCU with EEPROM
PDF  244 Pages
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制造商  HOLTEK [Holtek Semiconductor Inc]
网页  http://www.holtek.com
标志 HOLTEK - Holtek Semiconductor Inc

HT66F40 数据表(HTML) 68 Page - Holtek Semiconductor Inc

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HT68F20/HT68F30/HT68F40/HT68F50/HT68F60
HT68FU30/HT68FU40/HT68FU50/HT68FU60
Rev. 1.60
68
October 24, 2011
Pull-high Resistors
Many product applications require pull-high resistors for their switch inputs usually requiring the use of an external re-
sistor. To eliminate the need for these external resistors, all I/O pins, when configured as an input have the capability of
being connected to an internal pull-high resistor. These pull-high resistors are selected using registers PAPU~PGPU,
and are implemented using weak PMOS transistors.
· PAPU Register
Bit
76543210
Name
D7
D6
D5
D4
D3
D2
D1
D0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
POR
00000000
· PBPU Register
¨ HT68F40/HT68F50/HT68F60
Bit
76543210
Name
D7
D6
D5
D4
D3
D2
D1
D0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
POR
00000000
· PCPU Register
¨ HT68F30/HT68F40/HT68F50/HT68F60
Bit
76543210
Name
D7
D6
D5
D4
D3
D2
D1
D0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
POR
00000000
· PDPU Register
¨ HT68F40/HT68F50/HT68F60
Bit
76543210
Name
D7
D6
D5
D4
D3
D2
D1
D0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
POR
00000000
· PEPU Register
¨ HT68F40/HT68F50/HT68F60
Bit
76543210
Name
D7
D6
D5
D4
D3
D2
D1
D0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
POR
00000000



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