M16CSLASH29 datasheet(350/499 Pages) RENESAS

350 / 499 page

19. Programmable I/O Ports

page 326

Figure 19.9 PCR Register

Figure 19.10 PACR Register

Pin Assignment Control Register (1)

Symbpl

Address

After Reset

PACR

025D16

0016

Bit Name

Function

Bit Symbol

b7 b6 b5 b4 b3 b2 b1 b0

Pin enabling bit

Nothing is assigned. If necessary,

set to 0. When read, the

content is 0

(b6-b3)

010 : 64 pin

011 : 80 pin

All other values are reserved. Do

not use.

PACR0

PACR1

PACR2

Reserved bits

U1MAP

UART1 pin remapping bit

UART1 pins assigned to

0 : P67 to P64

1 : P73 to P70

NOTE:

1. Set the PACR register by the next instruction after setting the PRC2 bit in the PRCR register to 1 (write

enable).

Port Control Register

Symbpl

Address

After Reset

PCR

03FF16

0016

Bit Name

Function

Bit symbol

b7 b6 b5 b4 b3 b2 b1 b0

PCR0

Port P1 control bit

(b7-b1)

Operation performed when the P1

0: When the port is set for input,

the input levels of P10 to P17

pins are read. When set for

output, the port latch is read.

1: The port latch is read

regardless of whether the port

is set for input or output.

Nothing is assigned. If necessary, set to 0.

When read, the content is 0

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