Panasonic F77G, MN101C77C user manual Port 5 IV

Models: F77G MN101C77C

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Chapter 4 I/O Ports

4-5

Port 5

4-5-1 Description

„General Port Setup

Each bit of the port 5 control I/O direction register (P5DIR) can be set individually to set pins as input or output. The control flag of the port 5 direction control register (P5DIR) is set to "1" for output mode, and "0" for input mode.

To read input data of pin, set the control flag of the port 5 direction control register (P5DIR) to "0" and read the value of the port 5 input register (P5IN).

To output data to pin, set the control flag of the port 5 direction control register (P5DIR) to "1" and write the value of the port 5 output register (P5OUT).

Each pin can be set individually whether pull-up resistor is added or not, by the port 5 pull-up resistor control register (P5PLU). Set the control flag of the port 5 pull-up resistor control register (P5PLU) to "1" to add pull-up resistor.

„Special Function Pin Setup

P50 to P52 are used as I/O pin for the serial interface 3, as well. P51 is output pin of the serial interface 3 transmission data. When the SC3SBOS flag of the serial interface 3 mode register 1 (SC3MD1) is "1", P51 is serial data output pin. P50 is the input pin of the serial interface 3 reception data. P52 is I/O pin of the serial interface 3 clock. When the SC3SBTS flag of serial interface 3 mode register 1 (SC3MD1) is "1", P52 is serial clock output pin.

IP53 to P54 are used as I/O pin for the serial interface 4, as well. P53 is data I/O pin of the serial interface

4.When the SELI2C flag of the serial interface 4 address register 1 (SC4AD1) is "1", P53 is serial interface

4I/O pin. P54 is the serial interface 4 clock I/O pin. When the SELI2C flag of serial interface 4 address register 1 (SC4AD1) is "1", P54 is serial clock I/O pin.

Port 5 IV - 21

Page 171
Image 171
Panasonic F77G, MN101C77C user manual Port 5 IV