Panasonic MN101C77C User Manual

Chapter 4    I/O Ports

IV - 4

Overview

Ports 0 to 2, ports 5 to 8 and port A are controlled by the data output register (PnOUT), the data input

register (PnIN), the I/O direction control register (PnDIR), the pull-up resistor control register (PnPLU) and

the pull-up / pull-down resistor control resister (PnPLUD) and registers (P1OMD, P1TCNT, PAIMD, FLOAT)

that control special function pin.

Table 4-1-3 shows the registers to control ports 0 to 2, Ports 5 to 8 and Port A ;

Regis ter

Address

R/W

Function

Page

P0OUT

x'03F10'

R/W

Port 0 output register

IV-7

P0IN

x'03F20'

R

Port 0 input regis ter

IV-7

P0DIR

x'03F30'

R/W

Port 0 direction control regis ter

IV-7

P0PLU

x'03F40'

R/W

Port 0 pull-up resistor control regis ter

IV-7

P1OUT

x'03F11'

R/W

Port 1 output register

IV-13

P1IN

x'03F21'

R

Port 1 input regis ter

IV-13

P1DIR

x'03F31'

R/W

Port 1 direction control regis ter

IV-13

P1PLU

x'03F41'

R/W

Port 1 pull-up resistor control regis ter

IV-13

P1OMD

x'03F2F'

R/W

Port 1 output mode register

IV-14

P1TCNT

x'03F7E'

R/W

Port 1 output control register

IV-14

P2OUT

x'03F12'

R/W

Port 2 output register

IV-17

P2IN

x'03F22'

R

Port 2 input regis ter

IV-17

P2DIR

x'03F32'

R/W

Port 2 direction control regis ter

IV-17

P2PLU

x'03F42'

R/W

Port 2 pull-up resistor control regis ter

IV-17

P5OUT

x'03F15'

R/W

Port 5 output register

IV-21

P5IN

x'03F25'

R

Port 5 input regis ter

IV-21

P5DIR

x'03F35'

R/W

Port 5 direction control regis ter

IV-21

P5PLU

x'03F45'

R/W

Port 5 pull-up resistor control regis ter

IV-21

P6OUT

x'03F16'

R/W

Port 6 output register

IV-27

P6IN

x'03F26'

R

Port 6 input regis ter

IV-27

P6DIR

x'03F36'

R/W

Port 6 direction control regis ter

IV-27

P6PLU

x'03F46'

R/W

Port 6 pull-up resistor control regis ter

IV-27

P6SYO

x'03F1E'

R/W

Port 6 synchronous output control register

IV-28

Port 6

Port 0

Port 1

Port 2

Port 5