R8CSLASH15 datasheet(196/277 Pages) RENESAS

196 / 277 page

R8C/14 Group, R8C/15 Group

17. Programmable I/O Ports

Rev.2.10

Jan 19, 2006

Page 184 of 253

REJ09B0164-0210

Figure 17.5

PD1, PD3 and PD4 Registers

Figure 17.6

P1, P3 and P4 Registers

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

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_4

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”.

PDi_6

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

(1, 2)

Symbol

Address

After Reset

00E1h

Indeterminate

00E5h

Indeterminate

00E8h

Indeterminate

Bit Symbol

Bit Name

Function

NOTES :

Port Pi6 Bit

Port Pi2 Bit

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

for input mode can be read by reading the

corresponding bit in this register. The pin

level on any I/O port w hich is set for

output mode can be controlled by w riting

to the corresponding bit in this register.

0 : “L” level

1 : “H” level(1)

Port Pi0 Bit

Port Pi1 Bit

Port Pi7 Bit

Port Pi5 Bit

Port Pi4 Bit

Port Pi3 Bit

b7 b6 b5 b4

Pi_1

Pi_5

Pi_0

Pi_2

Pi_4

Pi_3

b3 b2 b1

Bits P4_0 to P4_4 in the P4 register are unavailable on this MCU. If it is necessary to set bits P4_0 to P4_4, set to

“0” (“L” level). When read, the content is “0”.

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

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