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WT6018 Datasheet(PDF) 7 Page - List of Unclassifed Manufacturers |
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WT6018 Datasheet(HTML) 7 Page - List of Unclassifed Manufacturers |
7 / 23 page WT6018 Digital Monitor Controller Ver. 1.41 Jul-31-1998 Weltrend Semiconductor, Inc. 7 Port_C : Pin PC0 - general purpose I/O pin shared with 4-bit A/D converter 0 input. Pin PC1 - general purpose I/O pin shared with 4-bit A/D converter 1 input Pin PC2 to PC7 - general purpose I/O pins. The REG#14H defines the I/O direction and the REG#15H controls the output level. The structure of Port_C is same as the Port_B except the sink current is 10mA. When PC0 and PC1 are programmed as the A/D converter inputs, the pull high transistor is disconnected. Address R/W Initial Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0 0014H W 00H PC7OE PC6OE PC5OE PC4OE PC3OE PC2OE PC1OE PC0OE 0015H W FFH PC7W PC6W PC5W PC4W PC3W PC2W PC1W PC0W 0015H R -- PC7R PC6R PC5R PC4R PC3R PC2R PC1R PC0R Bit Name Bit value = “1” Bit value = “0” PC7OE - PC0OE Output enable. Output disable (internal pull-up). PC7W - PC0W Outputs high level (IOH= -5mA). Outputs low level (IOL= 10mA). PC7R - PC0R Pin is high level. Pin is low level. Port_D : Pin SCL/PD0 - general purpose I/O pin shared with DDC interface serial clock. Pin SDA/PD1 - general purpose I/O pin shared with DDC interface serial data. The structure of these two pins are same as the PB4 and PB5. Default is DDC interface and can be changed to I/O port D by setting ENPD bit. Address R/W Initial Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0 000FH W 00H -- -- -- ENPD PD1OE PD0OE PD1W PD0W 000FH R -- -- -- -- -- -- -- PD1R PD0R Bit Name Bit value = “1” Bit value = “0” ENPD Enable I/O Port_D. DDC interface.(open drain) PD1OE - PD0OE Output enable. Output disable (internal pull-up). PD1W - PD0W Outputs high level (IOH= -5mA). Outputs low level (IOL= 5mA). PD1R- PD0R Pin is high level. Pin is low level. * If program wants to read current status on the I/O pins (any I/O port), do not set output enable bit to “0”. Because the registers for reading I/O are always indicating the current state on the I/O pins, set output enable bit to “0” will change the level on the I/O pin. Please reference the I/O pin structure. |
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