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PTK8607 Datasheet(PDF) 12 Page - List of Unclassifed Manufacturers

Part # PTK8607
Description  8 Bit Micro-controller Data Sheet
PDF  25 Pages
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Manufacturer  ETC [List of Unclassifed Manufacturers]
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PTK8607 Datasheet(HTML) 12 Page - List of Unclassifed Manufacturers

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PTK8607 Data Sheet
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Page12
9.13 特殊暫存器 CFR3
– 預設值 00000000 (本位元僅可寫)
位元
名 稱
功
能
說
明
Bit7
Bit2
-
保留位元! 不可寫入 1
功能:I/O 狀態控制位元。
說明:本雙位元組合(Bit0 及 Bit1)可控制 I/O 三種狀態設定。
使用: .I/O 輸入或輸出模式(0,0)。
Exp.指定 Port21 到 Port26 是輸入腳,Port27 是輸出腳
MOVLW
xxxxxx00b
MVW2CR4
MOVLW
01111111b
TRIS
06H
.控制 I/O 的下拉電阻開或關模式(1,0)。
Exp.指定 Port24,Port25,Port26 有下拉電阻
MOVLW
xxxxxx10b
MVW2CR4
MOVLW
01110000b
TRIS
06H
.控制 I/O 的上拉電阻開或關模式(1,1)。
Exp.指定 Port20,Port21,Port27 有下拉電阻
MOVLW
xxxxxx11b
MVW2CR4
MOVLW
01111100b
TRIS
06H
00
I/O 輸入或輸出設定暫存器,預設值 11111111。
Bit = 1 (設定是輸入 pin 功能
)
Bit = 0 (設定是輸出 pin 功能
)
10
I/O 下拉電阻設定暫存器,預設值 11111111。
Bit = 1 (關閉 Pull Down Resister Function)
Bit = 0 (開啟 Pull Down Resister Function)
Bit1
Bit0
IOCGS1
and
IOCGS0
11
I/O 上拉電阻設定暫存器,預設值 00000000。
Bit = 1 (開啟 Pull Up Resister Function)
Bit = 0 (關閉 Pull Up Resister Function)



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