HT82J97E datasheet(2/46 Pages) HOLTEK

2 / 46 page

Pin Assignment

Pin Description

Pin Name

I/O

ROM Code

Option

Description

PA0~PA7

I/O

Pull-low

Pull-high

Wake-up

CMOS/NMOS/PMOS

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

wake-up input by ROM code option. The input or output mode is con-

trolled by PAC (PA control register).

Pull-high resistor options: PA0~PA7

Pull-low resistor options: PA0~PA3

CMOS/NMOS/PMOS options: PA0~PA7

Wake-up options: PA0~PA7

PB0/AN0

PB1/AN1

PB2/AN2

PB3/AN3

PB5/AN5

PB6/VRL

I/O

Pull-high

Analog input

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

CMOS output or Schmitt trigger input with pull-high resistor (determined

by pull-high options).

The PB can be used as analog input of the analog to digital converter

(determined by options).

Pull-low resistor for options: PB2, PB3

PB4/AN4

PB7/VRH

I/O

Pull-high

Analog input

Wake-up

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

CMOS output or Schmitt trigger input with pull-high resistor (determined

by pull-high options).

The PB can be used as analog input of the analog to digital converter

(determined by options).

Wake-up options: PB4, PB7

VSS

¾¾

Negative power supply, ground

PC0~PC3

I/O

Pull-high

Bidirectional I/O lines. Software instructions determine the CMOS out-

put or Schmitt trigger input with pull-high resistor (determined by

pull-high options).

PC2 can be used as PWM1 output

PC3 can be used as PWM2 output

RES

Schmitt trigger reset input. Active low.

VDD

¾¾

Positive power supply

V33O

3.3V regulator output

USBD+/CLK

I/O

USBD+ or PS2 CLK I/O line

USB or PS2 function is controlled by software control register

USBD-/DATA

I/O

USBD- or PS2 DATA I/O line

USB or PS2 function is controlled by software control register

OSCI

OSCO

OSCI, OSCO are connected to a 6MHz or 12MHz crystal/resonator (de-

termined by software instructions) for the internal system clock.

HT82J97E

Rev. 1.30

May 10, 2004

2 0

1 9

1 8

1 7

1 6

1 5

1 4

1 3

1 2

1 1

1 0

H T 8 2 J 9 7 E

2 0 S O P - A

V S S

V 3 3 O

U S B D + / C L K

U S B D - / D A T A

R E S

P A 0

P A 1

P B 2

P B 3

P B 4

O S C I

O S C O

V D D

P A 7

P A 6

P A 5

P A 4

P A 3

P A 2

P B 7

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 J 9 7 E

2 8 S O P - A

V S S

V 3 3 O

U S B D + / C L K

U S B D - / D A T A

R E S

P A 0

P A 1

P C 0

P C 1

P B 0 / A N 0

P B 1 / A N 1

P B 2 / A N 2

P B 3 / A N 3

P B 4 / A N 4

O S C I

O S C O

V D D

P C 3 / P W M 2

P C 2 / P W M 1

P A 7

P A 6

P A 5

P A 4

P A 3

P A 2

P B 7 / V R H

P B 6 / V R L

P B 5 / A N 5

HT82J97E Datasheet(PDF) 2 Page - Holtek Semiconductor Inc

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