R8C2A datasheet(89/609 Pages) RENESAS

89 / 609 page

R8C/2A Group, R8C/2B Group

7. Programmable I/O Ports

Rev.2.00

Nov 26, 2007

Page 69 of 580

REJ09B0324-0200

Figure 7.13

Pi (i = 0 to 6 and 8) Registers

Port Pi Register (i = 0 to 6, 8)

Symbol

Address

After Reset

00E0h

Undefined

00E1h

Undefined

00E4h

Undefined

00E5h

Undefined

P4(1)

00E8h

Undefined

P5(2)

00E9h

Undefined

00ECh

Undefined

P8(3)

02E6h

Undefined

Bit Symbol

Bit Name

Function

NOTES:

3. The P8_7 bit in the P8 register is a reserved bit. If it is necessary to set the P8_7 bit, set to 0.

Bits P5_5 to P5_7 in the P5 register are reserved bits. If it is necessary to set bits P5_5 to P5_7, set to 0.

Bits P4_0 to P4_2 in the P4 register are unavailable on this MCU.

If it is necessary to set bits P4_0 to P4_2, set to 0 (“L” level). When read, the content is 0.

Pi_7

Pi_6

b3 b2 b1 b0

Pi_1

Pi_5

Pi_0

Pi_2

Pi_4

Pi_3

b7 b6 b5 b4

Port Pi_0 bit

Port Pi_1 bit

Port Pi_7 bit

Port Pi_5 bit

Port Pi_4 bit

Port Pi_3 bit

Port Pi_6 bit

Port Pi_2 bit

The pin level of any I/O port w hich is set to

input mode can be read by reading the

corresponding bit in this register. The pin level

of any I/O port w hich is set to output mode

can be controlled by w riting to the

corresponding bit in this register.

0 : “L” level

1 : “H” level

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