6

MA009A Technical Summary

MEGAWIN

function will make the mater to expand interrupt pins very easily.

I/O Port 1

Name

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

P1

P17

P16

P15

P14

P13

P12

P11

P10

Port P1 input or output status register.

Name

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

P1CR

-

-

-

-

-

-

CR11

CR10

Port P1 I/O control register.

P1CR.0: P1.0 ~ P1.3 is input or output, 0: input, 1: output

P1CR.1: P1.4 ~ P1.7 is input or output, 0: input, 1: output

Name

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

P1POR

-

-

-

-

-

-

PO11

PO10

Port P1 pull high/output mode control register.

If P1CR.x == 0 (input mode)

P1POR.0: P1.0 ~ P1.3 pull high control, 0: enable (large resistance, 350K), 1: disable

P1POR.1: P1.4 ~ P1.7 pull high control, 0: enable (large resistance, 350K), 1: disable

If P1CR.x == 1 (output mode)

P1POR.0: P1.0 ~ P1.3 CMOS/NMOS selector, 0: CMOS, 1: NMOS

P1POR.1: P1.4 ~ P1.7 CMOS/NMOS selector, 0: CMOS, 1: NMOS

Name

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

P1PSR

-

-

-

-

-

-

PS11

PS10

Port P1 strong pull high selection register.

If P1CR.x == 0 (input mode)

P1PSR.0: P1.0 ~ P1.3 strong pull high control, 0: disable, 1: enable (small resistance, 50K)

P1PSR.1: P1.4 ~ P1.7 strong pull high control, 0: disable, 1: enable (small resistance, 50K)

Name

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

P1SCR

-

-

-

-

-

-

SC11

SC10

Port P1 sink control register.

If P1CR.x == 1 (output mode)

P1SCR.0: P1.0 ~ P1.3 output sink ability control, 0: weak, 1: strong (large sink current)

P1SCR.1: P1.4 ~ P1.7 output sink ability control, 0: weak, 1: strong (large sink current)