M16CSLASH1N datasheet(172/238 Pages) RENESAS

172 / 238 page

Rev.1.00

Oct 20, 2004

page 160 of 222

M16C/1N Group

17. Programmable I/O Ports

REJ09B0007-0100Z

b5 b4

Port Pi direction register (Note 1, 2, 3)

Symbol

PDi (i = 0 to 5)

00E216, 00E316

00E616

00E716, 00EA16

00EB16

Address

When reset

0016

XXXXXX002

0016

XXXXX0002

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

Function

Bit name

Bit symbol

0 : Input mode

(Functions as an input port)

1 : Output mode

(Functions as an output port)

(i = 0 to 5)

Note 1: Set bit 2 of protect register (address 000A16) to "1" before rewriting to the port P0 direction register.

Note 2: Nothing is assigned in bit 2 to bit 7 of port P2 direction register. When write, set "0". When read, their

contents are "0".

Note 3: Nothing is assigned in bit 3 to bit 7 of port P5 direction register.

When write, set "0".

When read, their contents are "0".

Figure 17.5 Port Pi direction register

Note 1: Nothing is assigned in bit 2 to bit 7 of port P2 register.

When write, set "0".

When read, their contents are "0".

Note 2: Nothing is assigned in bit 3 to bit 7 of port P5 register.

When write, set "0".

When read, their contents are "0".

b5 b4

Port Pi register (Note 1, 2)

Symbol

Pi (i = 0 to 5)

Address

00E016, 00E116, 00E416,

00E516, 00E816, 00E916

When reset

Indeterminate

Function

Bit name

Bit symbol

Pi_0

Port Pi0 register

Pi_1

Port Pi1 register

Pi_2

Port Pi2 register

Pi_3

Port Pi3 register

Pi_4

Port Pi4 register

Pi_5

Port Pi5 register

Pi_6

Port Pi6 register

Pi_7

Port Pi7 register

Data is input and output to and from

each pin by reading and writing to and

from each corresponding bit

0 : "L" level data

1 : "H" level data

(i = 0 to 5)

Figure 17.6 Port Pi register

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