R8C2K datasheet(71/471 Pages) RENESAS

71 / 471 page

R8C/2K Group, R8C/2L Group

7. Programmable I/O Ports

Rev.1.10

Dec 21, 2007

Page 54 of 450

REJ09B0406-0110

Figure 7.8

PDi (i = 0 to 4) Registers

Port Pi Direction Register (i = 0 to 4)

Symbol

Address

After Reset

PD0(1)

00E2h

00h

PD1

00E3h

00h

PD2

00E6h

00h

PD3(2)

00E7h

00h

PD4(3)

00EAh

00h

Bit Symbol

Bit Name

Function

NOTES:

3. Bits PD4_0 to PD4_4, PD4_6, and PD4_7 in the PD4 register are unavailable on this MCU.

If it is necessary to set bits PD4_0 to PD4_4, PD4_6, and PD4_7 in the PD4 register, set to 0 (input mode). When read,

the content is 0.

PDi_7

Port Pi_7 direction bit

Write to the PD0 register w ith the next instruction after that used to set the PRC2 bit in the PRCR register to 1 (w rite

enabled).

Bits PD0_4, PD0_6, and PD0_7 in the PD0 register are unavailable on this MCU.

If it is necessary to set bits PD0_4, PD0_6, and PD0_7 in the PD0 register, set to 0 (input mode). When read, the

content is 0.

Bits PD3_0 to PD3_2, PD3_6, and PD3_7 in the PD3 register are unavailable on this MCU.

If it is necessary to set bits PD3_0 to PD3_2, PD3_6, and PD3_7 in the PD3 register, set to 0 (input mode). When read,

the content is 0.

b3 b2

PDi_2

b1 b0

PDi_1

PDi_0

b7 b6 b5 b4

PDi_3

Port Pi_3 direction bit

0 : Input mode

(functions as an input port)

1 : Output mode

(functions as an output port)

Port Pi_6 direction bit

Port Pi_1 direction bit

PDi_6

Port Pi_4 direction bit

PDi_5

Port Pi_0 direction bit

Port Pi_2 direction bit

PDi_4

Port Pi_5 direction bit

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