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WT62P1-S44 Datasheet(PDF) 7 Page - List of Unclassifed Manufacturers |
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WT62P1-S44 Datasheet(HTML) 7 Page - List of Unclassifed Manufacturers |
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7 / 48 page  WT62P1 Data Sheet Rev. 1.01 Weltrend Semiconductor, Inc. Page 8 Port A Control Register Name Addr R/W Initial Bit 7 Bit 6 Bit 5 Bit4 Bit 3 Bit 2 Bit 1 Bit 0 PA_CTRL 0000h W 00h PA7OE PA6OE PA5OE PA4OE PA3OE PA2OE PA1OE PA0OE Bit Name Description PAnOE Port An Output Enable. When it is set, PAn is output pin. When it is cleared, PAn is input pin with internal pull high (except PA0 and PA1 pins). Port A Data Register Name Addr R/W Initial Bit 7 Bit 6 Bit 5 Bit4 Bit 3 Bit 2 Bit 1 Bit 0 R 00h PA7 PA6 PA5 PA4 PA3 PA2 PA1 PA0 PA_DATA 0001h W 00h PA7 PA6 PA5 PA4 PA3 PA2 PA1 PA0 Bit Name Description PAn (W) This bit controls the output level when the corresponding PAnOE bit is set. When PAn=1, PAn pin outputs high level. (PA0 and PA1 are open-drain output) When PAn=0, PAn pin outputs low level. PAn (R) When PAnOE=1 (i.e. output port), this bit is same as PAn (W). When PAnOE=0, this bit indicates the input level. “ 1” means high and “ 0” means low. I/O Port B I/O Port B is shared with some special functions. When the special function is disabled, it is an general I/O port and is same as Port A2. If it is configured as an output, it can source/sink 6mA. If it is configured as an input, it has an internal pull-up resistor. Port B Control Register Name Addr R/W Initial Bit 7 Bit 6 Bit 5 Bit4 Bit 3 Bit 2 Bit 1 Bit 0 PB_CTRL 0002h W 00h -- -- PB5OE PB4OE PB3OE PB2OE PB1OE PB0OE Bit Name Description PBnOE Port Bn Output Enable. When it is set, PBn is output pin. When it is cleared, PBn is input pin with internal pull high Port B Data Register Name Addr R/W Initial Bit 7 Bit 6 Bit 5 Bit4 Bit 3 Bit 2 Bit 1 Bit 0 R 00h -- -- PB5 PB4 PB3 PB2 PB1 PB0 PB_DATA 0003h W 00h -- -- PB5 PB4 PB3 PB2 PB1 PB0 Bit Name Description PBn (W) This bit controls the output level when the corresponding PBnOE bit is set. When PBn=1, PBn pin outputs high level. When PBn=0, PBn pin outputs low level. PBn (R) When PBnOE=1 (i.e. output port), this bit is same as PBn (W). When PBnOE=0, this bit indicates the input level. “ 1” means high and “ 0” means low. |
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