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HD6433644R Datasheet(PDF) 203 Page - Renesas Technology Corp

Part # HD6433644R
Description  8-Bit Single-Chip Microcomputer
PDF  549 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

HD6433644R Datasheet(HTML) 203 Page - Renesas Technology Corp

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Section 8 I/O Ports
Rev. 6.00 Sep 12, 2006 page 183 of 526
REJ09B0326-0600
Bits 7 to 3
 Reserved Bits: Bits 7 to 3 are reserved; they are always read as 1, and cannot be
modified.
Bit 2
 P22/TXD Pin Function Switch (TXD): Bit 2 selects whether pin P22/TXD is used as P22
or as TXD.
Bit 2: TXD
Description
0
Functions as P22 I/O pin
(initial value)
1
Functions as TXD output pin
Bit 1
 Reserved Bit: Bit 1 is reserved: it is always read as 0 and cannot be modified.
Bit 0
 P32/SO1 Pin PMOS Control (POF1): This bit controls the PMOS transistor in the
P32/SO1 pin output buffer.
Bit 0: POF1
Description
0
CMOS output
(initial value)
1
NMOS open-drain output



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