R8C2K datasheet(72/471 Pages) RENESAS

72 / 471 page

R8C/2K Group, R8C/2L Group

7. Programmable I/O Ports

Rev.1.10

Dec 21, 2007

Page 55 of 450

REJ09B0406-0110

Figure 7.9

Pi (i = 0 to 4) Registers

Figure 7.10

P2DRR Register

Port Pi Register (i = 0 to 4)

Symbol

Address

After Reset

P0(1)

00E0h

Undefined

00E1h

Undefined

00E4h

Undefined

P3(2)

00E5h

Undefined

P4(3)

00E8h

Undefined

Bit Symbol

Bit Name

Function

NOTES:

3. Bits P4_0, P4_1, P4_3, and P4_4 in the P4 register are unavailable on this MCU.

If it is necessary to set bits P4_0, P4_1, P4_3, and P4_4, set to 0 (“L” level). When read, the content is 0.

Pi_7

Bits P0_4, P0_6, and P0_7 in the P0 register are unavailable on this MCU.

If it is necessary to set bits P0_4, P0_6, and P0_7, set to 0 (“L” level). When read, the content is 0.

Bits P3_0 to P3_2, P3_6, and P3_7 in the P3 register are unavailable on this MCU.

If it is necessary to set bits P3_0 to P3_2, P3_6, and P3_7, set to 0 (“L” level). When read, the content is 0.

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

Port P2 Drive Capacity Control Register

Symbol

Address

After Reset

P2DRR

00F4h

00h

Bit Symbol

Bit Name

Function

NOTE:

P2DRR4

P2_4 drive capacity

P2_5 drive capacity

P2_1 drive capacity

P2_0 drive capacity

P2DRR3

P2_2 drive capacity

P2DRR1

P2DRR0

b7 b6 b5 b4 b3 b2 b1

Both “H” and “L” output are set to high drive capacity.

P2DRR7

P2DRR5

Set P2 output transistor drive capacity

0 : Low

1 : High(1)

P2DRR2

P2_7 drive capacity

P2_3 drive capacity

P2DRR6

P2_6 drive capacity

R8C2K Datasheet(PDF) 72 Page - Renesas Technology Corp

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