HT82M99E datasheet(2/45 Pages) HOLTEK

2 / 45 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

Falling edge wake-up options: PA0~PA1, PA4~PA7

Rising and falling edge wake-up options: PA2~PA3

PB2, PB3

I/O

Pull-high

Pull-low

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).

Pull-low resistor for options: PB2, PB3

PB4, PB7

I/O

Pull-high

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).

Falling edge wake-up options: PB4, PB7

VSS

¾¾

Negative power supply, ground

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.

HT82M99E

Rev. 1.50

November 19, 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 M 9 9 E

2 0 D I P - A / 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 / X 1

P A 1 / X 2

P B 2 / Y 1

P B 3 / Y 2

P B 4 / R B 0

O S C I

O S C O

V D D

P A 7 / L E D

P A 6 / M

P A 5 / R

P A 4 / L

P A 3 / Z 2

P A 2 / Z 1

P B 7 / R B 1

1 8

1 7

1 6

1 5

1 4

1 3

1 2

1 1

1 0

H T 8 2 M 9 9 E

1 8 D I P - A / 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 / X 1

P A 1 / X 2

P B 2 / Y 1

P B 3 / Y 2

O S C I

O S C O

V D D

P A 7 / L E D

P A 6 / M

P A 5 / R

P A 4 / L

P A 3 / Z 2

P A 2 / Z 1

HT82M99E Scheda tecnica(PDF) 2 Page - Holtek Semiconductor Inc

HT82M99E Scheda tecnica(HTML) 2 Page - Holtek Semiconductor Inc

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45

Scheda tecnica Scarica

Link URL