EM78P803A

8-bit Micro-controller

_________________________________________________________________________________________________________________________________________________________________

* This specification are subject to be changed without notice.

17

2005/8/12

V1.3.3

CONT register is readable (CONTR) and writable (CONTW).

IOC5 (P5IOC: PORT5 I/O control)

7

6

5

4

3

2

1

0

IOC57

IOC56

IOC55

IOC54

0

0

0

0

R/W-1

R/W-1

R/W-1

R/W-1

R-0

R-0

R-0

R-0

Bit 0 ~ Bit 3 : unused

Bit 4 ~ 7 (IOC54 ~ IOC57) : PORT5(4~7) I/O direction control register

0

put the relative I/O pin as output

1

put the relative I/O pin into high impedance

IOC6 (P6IOC: PORT6 I/O control)

7

6

5

4

3

2

1

0

IOC67

IOC66

IOC65

IOC64

IOC63

IOC62

IOC61

IOC60

R/W-1

R/W-1

R/W-1

R/W-1

R/W-1

R/W-1

R/W-1

R/W-1

Bit 0 ~ Bit 7 (IOC60 ~ IOC67) : PORT6(0~7) I/O direction control register

0

put the relative I/O pin as output

1

put the relative I/O pin into high impedance

IOC7 (P7IOC: PORT7 I/O control)

7

6

5

4

3

2

1

0

IOC77

IOC76

IOC75

IOC74

IOC73

IOC72

IOC71

IOC70

R/W-1

R/W-1

R/W-1

R/W-1

R/W-1

R/W-1

R/W-1

R/W-1

Bit 0 ~ Bit 7 (IOC70 ~ IOC77) : PORT7(0~7) I/O direction control register

0

put the relative I/O pin as output

1

put the relative I/O pin into high impedance

P74~P75 are shared with TIP and RING. When the bit DEDPWR is set, P74~P75 must be set as input port.

Otherwise, P74~P75 and DED function will collide and not work as normal.

IOC8 (P8IOC: PORT8 I/O control)

7

6

5

4

3

2

1

0

0

0

0

0

IOC83

IOC82

IOC81

IOC80

R-0

R-0

R-0

R-0

R/W-1

R/W-1

R/W-1

R/W-1

Bit 0 ~ Bit 3 (IOC80 ~ IOC83) : PORT8(0~3) I/O direction control register

0

put the relative I/O pin as output

1

put the relative I/O pin into high impedance

Bit 4 ~ Bit 7 : unused

IOC9 (P9IOC: PORT9 I/O control)

7

6

5

4

3

2

1

0

IOC97

IOC96

IOC95

IOC94

0

0

0

0

R/W-1

R/W-1

R/W-0

R/W-0

R-0

R-0

R-0

R-0

Bit 0 ~ Bit 3 : unused

Bit 4 ~ Bit 7 (IOC94 ~ IOC97) : PORT9(4~7) I/O direction control register

0

put the relative I/O pin as output

1

put the relative I/O pin into high impedance