SC84520AP Ver la hoja de datos (PDF) - Silan Microelectronics

Número de pieza

componentes Descripción

Fabricante

SC84520AP

TWO IN ONE SCROLLING MOUSE CONTROLLER

Silan Microelectronics 

Silan

Semiconductors

SC84520

PIN DESCRIPTION

Pin Name

I/O

OPT

I/O

OSC OUT

O

OSCR

I

CLK/RTS

I/O

DATA/RXD

I/O

VSS

--

R

I

M

I/O

L

I/O

X1

X2

I

Y1

Y2

Z1

I

Z2

VSS

VDD

Description

INPUT: 200kΩ pull low to VSS.

When OPT is connected to VDD, SC84520 will enter test mode. In test mode, L will

be the output of X1, while M will be the output of X2. Toggling R key can change

these output to be Y1, Y2 or Z1, Z2 respectively.

OUTPUT: 2kHz Z-axis LED-driving source with A/D/E/F version.

“1” = VDD, “0” = floating

High duty is about 60µs.

The RC oscillation clock output. Or 3mA sink current output for X, Y photo emitters.

Connect 50kΩ ± 1% precise resistor for oscillation.

Connect to 8024 auxiliary port CLK line in PS/2 mode or connect directly to RS232C

RTS pin in serial mode. Auto-detect the operating port by this pin.

Connect to 8024 auxiliary port DATA line in PS/2 mode or connect directly to

RS232C RXD pin in serial mode.

Negative power input.

Three key-switches inputs. 200kΩ resistor pull low.

In Z-axis key mode, M key toggling can change the scrolling speed from low to high.

Three step dynamic input impedance. If OSC OUT is not connected to LEDs, the

dynamic input impedance will be off.

Use current comparator to measure photo-couples “ON”, or “OFF”.

Z-axis input.

Photo mode: Three steps dynamic input impedance. Current comparator input.

Key mode: 200kΩ resistor pull low. 7 levels increased by “M” key.

Voltage mode: 200kΩ resistor pull low. 7 level voltage comparator.

Mechanical mode: 13.2 kΩ resistor pull low, Current comparator input.

Negative power.

Power line.

HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD

Rev: 1.0 2000.12.31

5

Share Link: