GMS81608 datasheet(28/79 Pages) HYNIX

部件名	GMS81608

功能描述	LG Semicon 8-bit Microcontrollers

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制造商	HYNIX [Hynix Semiconductor]

网页	http://www.skhynix.com/kor/main.do

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R5 and R5DD registers: R5 is a 3-bit bidirectional

I/O port (address CAH). R50, R51 and R55 only are

physically implemented on this device.

R50, R51 have internal pullups which is activated on

input but deactivated on output. As input, these pins

that are externally pull low will source current (IP2 on

the DC characteristics) because of the internal pullups.

Caution:

Pins R50, R51 are present on 42SDIP, 44PLCC

package only, but not on 40DIP . Refer to Pin as -

signment.

Each pin is individually configurable as input and

output through the R5DD register (address CBH).

Port Pin

Alternate Function

R55

BUZ (Square-wave output for

Buzzer driving)

The control register PMR5 (address D1H) controls the

selection alternate function. After reset, this value is

"0", port may be used as general I/O ports. To use

buzzer function, write "1" to the PMR5.

R47 R46 R45 R44 R43 R42 R41 R40

Port 4 Data Register

ADDRESS: C8H

RESET VALUE: Undefined

R47 R46 R45 R44 R43 R42 R41 R40

R4DD

ADDRESS: C9H

RESET VALUE: 00000000

Direction select

0: Input

1: Output

Input/ Output data

R4

Port 4 Direction Register

T3S T1S EC2S EC0S INT3S INT2S INT1S INT0S

PMR4

ADDRESS: D0H

RESET VALUE: 00000000

0: R41

1: INT1

0: R47

1: T3O

0: R45

1: EC2

0: R46

1: T1O

0: R44

1: EC0

0: R43

1: INT3

0: R42

1: INT2

0: R40

1: INT0

MSB

LSB

IEDS

ADDRESS: F8H

RESET VALUE: 00000000

Edge Selection Register

External Interrupt Edge select

00: Reserved

01: Falling (1-to-0 transition)

10: Rising (0-to-1 transition)

11: Both (Rising & Falling)

INT3

INT2

INT1

INT0

Port 4 Mode Register

-

R55

-

R51 R50

Port 5 Data Register

ADDRESS: CAH

RESET VALUE: Undefined

-

R55

-

R51 R50

R5DD

ADDRESS: CBH

RESET VALUE: --0---00

Direction select

0: Input

1: Output

Input/ Output data

R5

Port 5 Direction Register

-

BUZS

-

PMR5

ADDRESS: D1H

RESET VALUE: --0-----

Port 5 Mode Register

0: R55

1: BUZ (Buzzer Port)

GMS81604/08

LG Semicon

24

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