M16CSLASH26 datasheet(173/239 Pages) RENESAS

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Renesas Technology Corp.

Programmable I/O Ports

167

M16C/26 Group

SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

Under

development

Preliminary Specifications Rev. 0.9

Specifications in this manual are tentative and subject to change.

Figure 1.17.5. Direction registers

Port Pi direction register

Symbol

Address

When reset

PDi (i = 6, 7, 10)

03EE16, 03EF16, 03F616

0016

Bit name

Function

Bit symbol

PDi_0

Port Pi0 direction register

PDi_1

Port Pi1 direction register

PDi_2

Port Pi2 direction register

PDi_3

Port Pi3 direction register

PDi_4

Port Pi4 direction register

PDi_5

Port Pi5 direction register

PDi_6

Port Pi6 direction register

PDi_7

Port Pi7 direction register

0 : Input mode

(Functions as an input port)

1 : Output mode

(Functions as an output port)

(i = 6, 7, 10)

Port P8 direction register

Symbol

Address

When reset

PD8

03F216

000X00002

Bit name

Function

Bit symbol

PD8_0

Port P80 direction register

PD8_1

Port P81 direction register

PD8_2

Port P82 direction register

PD8_3

Port P83 direction register

PD8_6

Port P86 direction register

PD8_7

Port P87 direction register

0 : Input mode

(Functions as an input port)

1 : Output mode

(Functions as an output port)

0 : Input mode

(Functions as an input port)

1 : Output mode

(Functions as an output port)

Port P1 direction register

Symbol

Address

When reset

PD1

03E316

000XXXXX2

Bit name

Function

Bit symbol

Nothing is assigned.

Write "0" when writing to this bit. The value is "0" when read.

PD1_5

Port P15 direction register

PD1_6

Port P16 direction register

PD1_7

Port P17 direction register

0 : Input mode

(Functions as an input port)

1 : Output mode

(Functions as an output port)

Port P9 direction register (Note)

Symbol

Address

When reset

PD9

03F316

XXXX00002

Bit name

Function

Bit symbol

PD9_1

Port P90 direction register

PD9_2

Port P91 direction register

PD9_3

Port P92 direction register

PD9_4

Port P93 direction register

0 : Input mode

(Functions as an input port)

1 : Output mode

(Functions as an output port)

Nothing is assigned.

Write "0" when writing to this bit. The value is "0" when read.

PD8_5

direction register

Nothing is assigned.

Write "0" when writing to this bit. The value is "0" when read.

Port P85

Note : Set bit 2 of the protect register (address 000A16) to "1" when writing new values to this register.

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