WT6014 データシートの表示（PDF） - Weltrend Semiconductor

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WT6014

Digital Monitor Controller

Weltrend Semiconductor 

Port_C :

WT6014

Digital Monitor Controller

Ver. 1.21 Jul-31-1998

Pin PC0 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.

Address R/W

0014H W

0015H W

0015H R

Initial

00H

FFH

--

Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0

PC7OE PC6OE PC5OE PC4OE PC3OE PC2OE PC1OE PC0OE

PC7W PC6W PC5W PC4W PC3W PC2W PC1W PC0W

PC7R PC6R PC5R PC4R PC3R PC2R PC1R PC0R

Bit Name

PC7OE - PC0OE

PC7W - PC0W

PC7R - PC0R

Bit value = “1”

Output enable.

Outputs high level (IOH= -5mA).

Pin is high level.

Bit value = “0”

Output disable (internal pull-up).

Outputs low level (IOL= 10mA).

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.

PCnOE

PCnW

PCnR

5mA

10mA

100uA

Structure of I/O Port C

Pin PC0 to PC7

Weltrend Semiconductor, Inc.

7

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