DMC73CE167 查看數據表（PDF） - Daewoo Semiconductor

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DMC73CE167

8Bit Single Chip Microcontroller

Daewoo Semiconductor 

27

8Bit Single Chip Microcontroller

DMC73C167

5.1.3 C Port

The C Port is an 8-bit bidirectional I/O port any of those eight pins can be individually

programmed as input and output lines under software control. In the DMC73C167,

the user can specify internal pull-up (5V) resistor insertion or not selectively for port C

pins (mask option)

Table 5-5. P11 0108h CDDR C Port Direction

Bit

7

6

5

4

3

2

1

0

R

W

CDDR7 CDDR6 CDDR5 CDDR4 CDDR3 CDDR2 CDDR1 CDDR0

Table 5-6. P10 010Ah CDATA C Port Data

Bit

7

6

5

4

3

2

1

0

R

W

CDATA7 CDATA6 CDATA5 CDATA4 CDATA3 CDATA2 CDATA1 CDATA0

Table 5-7. C Port Control Register Operation

CDDRn

0

1

Driection

Input Port

Output Port

CDATAn(Read)

0 ; Input 'Low'

1 : Input 'High'

Written Data

CDATAn(Write)

Invalid

0 ; Output 'Low'

1 : Output 'High'

5.1.4 D Port

The D Port is a 4-bit bidirectional I/O port any of those four pins can be individually

programmed as input and output lines under software control. In the DMC73C167, the

user can specify internal pull-up (5V) resistor insertion or not selectively for port D pins

(mask option).

Table 5-8. P13 010Dh DDDR D Port Direction

Bit

7

6

5

4

3

2

1

0

R

W

-

-

-

-

DDDR3 DDDR2 DDDR1 DDDR0

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