R5F211B2SP datasheet(45/339 Pages) RENESAS

45 / 339 page

R8C/1A Group, R8C/1B Group

5. Programmable I/O Ports

Rev.1.30

Dec 08, 2006

Page 29 of 315

REJ09B0252-0130

Figure 5.5

Registers PD1, PD3, and PD4

Figure 5.6

Registers P1 and P3

Port Pi Direction Register (i = 1, 3, 4)

(1, 2)

Symbol

Address

After Reset

PD1

00E3h

00h

PD3

00E7h

00h

PD4

00EAh

00h

Bit Symbol

Bit Name

Function

NOTES :

PDi_3

Port Pi3 direction bit

PDi_5

Port Pi0 direction bit

Port Pi1 direction bit

Port Pi4 direction bit

Port Pi2 direction bit

PDi_4

Port Pi5 direction bit

0 : Input mode

(functions as an input port)

1 : Output mode

(functions as an output port)

Port Pi6 direction bit

b7 b6 b5 b4 b3 b2

PDi_2

b1 b0

PDi_1

PDi_0

PDi_6

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, set to 0 (input mode). When read, the content is 0.

PDi_7

Port Pi7 direction bit

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

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

Port Pi Register (i = 1, 3)

(1)

Symbol

Address

After Reset

00E1h

Undefined

00E5h

Undefined

Bit Symbol

Bit Name

Function

NOTE :

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

If it is necessary to set bits P3_0 to P3_2, and P3_6, 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 Pi0 bit

Port Pi1 bit

Port Pi7 bit

Port Pi5 bit

Port Pi4 bit

Port Pi3 bit

Port Pi6 bit

Port Pi2 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(1)

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