Renesas M16C User Manual

Rev.1.10    Jul 01, 2005    page 233 of 318
REJ09B0124-0110

M16C/6N Group (M16C/6NK, M16C/6NM)

19. Programmable  I/O Ports

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

Nothing is assigned. When write, set to "0".
When read, its content is indeterminate.

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

(1) (2)

Bit Name

Bit Symbol

RW

b7

b6

b5

b4

b3

b2

b1

b0

PD0 to PD3
PD4 to PD7
PD9 to PD12 

(3)

PD13 

(3)

03E2h, 03E3h, 03E6h, 03E7h
03EAh, 03EBh, 03EEh, 03EFh
03F3h, 03F6h, 03F7h, 03FAh
03FBh

00h
00h
00h
00h

Symbol

Address

After Reset

Symbol

Address

After Reset

NOTES:

1. Make sure the PD7 and PD9 registers are written to by the next instruction after setting the PRC2 bit in the

PRCR register to "1" (write enabled).

2. When using the ports P11 to P13, set the PU37 bit in the PUR3 register to "1" (usable). 
3. The PD11 to PD13 registers are only in the 128-pin version. 

PDi_0

PDi_1

PDi_2

PDi_3

PDi_4

PDi_5

PDi_6

PDi_7

Port Pi_0 Direction Bit

Port Pi_1 Direction Bit

Port Pi_2 Direction Bit

Port Pi_3 Direction Bit

Port Pi_4 Direction Bit

Port Pi_5 Direction Bit

Port Pi_6 Direction Bit

Port Pi_7 Direction Bit

0 : Input mode

(Functions as an input port)

1 : Output mode

(Functions as an output port)

RW

RW

RW

RW

RW

RW

RW

RW

Function

Port P8 Direction Register

Bit Name

Bit Symbol

RW

b7

b6

b5

b4

b3

b2

b1

b0

PD8

03F2h

00X00000b

PD8_0

PD8_1

PD8_2

PD8_3

PD8_4

-

(b5)

PD8_6

PD8_7

Port P8_0 Direction Bit

Port P8_1 Direction Bit

Port P8_2 Direction Bit

Port P8_3 Direction Bit

Port P8_4 Direction Bit

Port P8_6 Direction Bit

Port P8_7 Direction Bit

0 : Input mode

(Functions as an input port)

1 : Output mode

(Functions as an output port)

0 : Input mode

(Functions as an input port)

1 : Output mode

(Functions as an output port)

RW

RW

RW

RW

RW

-

RW

RW

Function