HT82K68A datasheet(2/30 Pages) HOLTEK

2 / 30 page

Pin Assignment

Pin Description

Pin Name

I/O

Mask

Option

Description

PA0~PA7

I/O

Wake-up

Pull-high

or None

Bidirectional 8-bit input/output port. Each bit can be configured as a wake-up input

by mask option. Software* instructions determine the CMOS output or Schmitt Trig-

ger input with or without 12K pull-high resistor.

PB0~PB7

I/O

Pull-high

or None

Bidirectional 8-bit input/output port. Software* instructions determine the output or

Schmitt Trigger input with or without pull-high resistor.

PC0

I/O

Wake-up

Pull-high

or None

This pin is an I/O port. NMOS open drain output with pull-high resistor and can be

used as DATA or CLOCK line of PS2. This pin can be configured as a wake-up in-

put by mask option.

PC1

I/O

Wake-up

Pull-high

or None

This pin is an I/O port. NMOS open drain output with pull-high resistor and can be

used as DATA or CLOCK line of PS2. This pin can be configured as a wake-up in-

put by mask option.

PC2~PC3

I/O

Wake-up

Pull-high

or None

Bidirectional 2-bit input/output port. Each bit can be configured as a wake-up input

by mask option. Software* instructions determine the CMOS output or Schmitt Trig-

ger input with or without pull-high resistor.

PC2 also as external interrupt input pin. PE0 determine whether rising edge or fall-

ing edge of PC2 to trigger the INT circuit.

PC4~PC7

I/O

Pull-high

or None

Bidirectional 4-bit input/output port. Software* instructions determine the CMOS

output or Schmitt Trigger input with or without pull-high resistor.

PD0~PD7

I/O

Pull-high

or None

Bidirectional 8-bit input/output port. Software* instructions determine the CMOS

output or Schmitt Trigger input with or without pull-high resistor.

HT82K68A

Rev. 1.10

November 20, 2001

P B 6

P B 7

P A 4

P A 5

P A 6

P A 7

O S C 2

O S C 1

V D D

R E S E T

P E 4 ( L E D )

P D 3

P D 2

P D 1

P D 0

P C 7

P C 6

P C 5

P C 4

P C 3

P B 5

P B 4

P A 3

P A 2

P A 1

P A 0

P B 3

P B 2

P B 1

P B 0

P D 7

P D 6

P D 5

P D 4

V S S

P E 2 ( L E D )

P E 3 ( L E D )

P C 0

P C 1

P C 2

4 0

3 9

3 8

3 7

3 6

3 5

3 4

3 3

3 2

3 1

3 0

2 9

2 8

2 7

2 6

2 5

2 4

2 3

2 2

2 1

1 0

1 1

1 2

1 3

1 4

1 5

1 6

1 7

1 8

1 9

2 0

P B 5

P B 4

P A 3

P A 2

P A 1

P A 0

P B 3

P B 2

P B 1

P B 0

N C

P D 7

P D 6

P D 5

P D 4

V S S

P E 2 ( L E D )

P E 3 ( L E D )

P C 0

P C 1

P C 2

P E 0

P E 1

P B 6

P B 7

P A 4

P A 5

P A 6

P A 7

N C

O S C 2

O S C 1

V D D

R E S E T

P E 4 ( L E D )

P D 3

P D 2

P D 1

P D 0

P C 7

P C 6

P C 5

P C 4

P C 3

H T 8 2 K 6 8 A

4 0 D I P - A

H T 8 2 K 6 8 A

4 8 S S O P - A

4 8

4 7

4 6

4 5

4 4

4 3

4 2

4 1

4 0

3 9

3 8

3 7

3 6

3 5

3 4

3 3

3 2

3 1

3 0

2 9

2 8

2 7

2 6

2 5

1 0

1 1

1 2

1 3

1 4

1 5

1 6

1 7

1 8

1 9

2 0

2 1

2 2

2 3

2 4

2 0

1 9

1 8

1 7

1 6

1 5

1 4

1 3

1 2

1 1

1 0

2 8

2 7

2 6

2 5

2 4

2 3

2 2

2 1

2 0

1 9

1 8

1 7

1 6

1 5

1 0

1 1

1 2

1 3

1 4

H T 8 2 K 6 8 A

2 0 S O P - A

P A 3

P A 2

P A 1

P A 0

P B 1

P B 0

V S S

P E 2

P C 0

P C 1

P A 4

P A 5

P A 6

P A 7

O S C 2

O S C 1

V D D

R E S E T

P C 3

P C 2

H T 8 2 K 6 8 A

2 8 S O P - A

P B 5

P B 4

P A 3

P A 2

P A 1

P A 0

P B 3

P B 2

P B 1

P B 0

V S S

P C 1

P C 2

P C 3

P B 6

P B 7

P A 4

P A 5

P A 6

P A 7

O S C 2

O S C 1

V D D

R E S E T

P C 7

P C 6

P C 5

P C 4

HT82K68A Datasheet(PDF) 2 Page - Holtek Semiconductor Inc

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