Renesas 16-bit single-chip microcomputer Manual De Usuario

Rev.1.02    Jul 01, 2005    page 231 of 314
REJ09B0126-0102

M16C/6N Group (M16C/6NL, M16C/6NN)

19. Programmable  I/O Ports

This document is under development and its contents are subject to change.

Port P8 Register

Bit name

Bit symbol

RW

b7

b6

b5

b4

b3

b2

b1

b0

P8

03F0h

Indeterminate

Symbol

Address

After Reset

P8_0

P8_1

Pi8_2

P8_3

P8_4

P8_5

P8_6

P8_7

Port P8 _0 Bit

Port P8 _1 Bit

Port P8 _2 Bit

Port P8 _3 Bit

Port P8 _4 Bit

Port P8 _5 Bit

Port P8 _6 Bit

Port P8 _7 Bit

The pin level on any I/O port which is set 
for input mode can be read by reading
the corresponding bit in this register.
The pin level on any I/O port which is
set for output mode can be controlled
by writing to the corresponding bit in 
this register. (Except for P8_5.)
0 : "L" level
1 : "H" level

RW

RW

RW

RW

RW

RO

RW

RW

Function

Port P14 Control Regisrer (128-pin version) 

(1)

Address

03DEh

Symbol

PC14

After Reset

XX00XXXXb

RW

RW

RW

Function

Bit Name

Bit Symbol

P140

Port P14_0 Bit

P141

Port P14_1 Bit

The pin level on any I/O port which is set 
for input mode can be read by reading the 
corresponding bit in this register.
The pin level on any I/O port which isset for 
output mode can be controlled by writing to 
the corresponding bit in this register. 
0 : "L" level
1 : "H" level

b7

b6

b5

b4

b3

b2

b1

b0

-

-

-

(b3-b2)

RW

RW

PD140

Port P14_0 Direction
Bit

PD141

Port P14_1 Direction
Bit

0 : Input mode

(Functions as an input port)

1 : Output mode

(Functions as an output port)

Nothing is assigned. When write, set to "0". 
When read, their contents are indeterminate.

-

(b7-b6)

Nothing is assigned. When write, set to "0". 
When read, their contents are indeterminate.

NOTE:

1. When using the port P14, set the PU37 bit in the PUR3 register to "1" (usable).

Bit Name

Bit Symbol

RW

b7

b6

b5

b4

b3

b2

b1

b0

NOTES:

1. Since P7_1 and P9_1 are N channel open-drain ports, the data is high-impedance.
2. When using the ports P11 to P13, set the PU37 bit in the PUR3 register to "1" (usable). 

If this bit is set to "0" (unusable), the P11 to P13 regisrers are set to "00h".

3. The P11 to P13 registers are only in the 128-pin version. 

Pi_0

Pi_1

Pi_2

Pi_3

Pi_4

Pi_5

Pi_6

Pi_7

Port Pi_0 Bit

Port Pi_1 Bit

Port Pi_2 Bit

Port Pi_3 Bit

Port Pi_4 Bit

Port Pi_5 Bit

Port Pi_6 Bit

Port Pi_7 Bit

The pin level on any I/O port which is set 
for input mode can be read by reading
the corresponding bit in this register.
The pin level on any I/O port which is
set for output mode can be controlled
by writing to the corresponding bit in 
this register.
0 : "L" level
1 : "H" level

RW

RW

RW

RW

RW

RW

RW

RW

Function

Port Pi Register (i = 0 to 7, 9 to 13) 

(1) (2)

P0 to P3
P4 to P7
P9 to P12 

(3)

P13 

(3)

03E0h, 03E1h, 03E4h, 03E5h
03E8h, 03E9h, 03ECh, 03EDh
03F1h, 03F4h, 03F5h, 03F8h
03F9h

Indeterminate
Indeterminate
Indeterminate
Indeterminate

Symbol

Address

After Reset