Datasheet > EM83812DP

EM83812DP

更新时间： 2025-07-14 22:36:15

品牌	Logo	应用领域
义隆 - ELAN		控制器
页数	文件大小	规格书
11页	88K
描述
ALL-INONE PLUG & PLAY SCRLLING SERIAL MOUSE CONTROLLER

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EM83812DP 数据手册

EM83812

ALL-INONE PLUG & PLAY SCRLLING SERIAL MOUSE CONTROLLER

GENERAL DESCRIPTION

The EM83812 PnP Scrolling Mouse Controller is specially designed to control serial mouse device.

This single chip can interface three key-switches and 4 X-Y photo-couples plus Z-axis directly to RS-232C.

There are four types Z-axis inputs used to implement scrolling mouse functionality.

FEATURES

• Using 50kΩ ±1% resistor for RC oscillation.

• Compatible with Microsoft serial scrolling mouse.

• 100 bytes PnP ID code could be filled by code layer.

• Built-in noise immunity circuit.

• The sampiling rate of motion detector is up to 65KHz.

• Built-in three zener diodes : one in VDD to VSS, two in RTS to VDD.

• CMOS push-pull RXD output.

• Built-in current comparator for photo-couples input.

• Built-in three step dynamic input impedance.

• Three key-switches and four photo-couples inputs.

• RTS debouncing circuit included.

• Photo couple test mode included.

• Low power dissipation.

• Six types Z direction input:

1. Photo couples input. (Z/1)

2. Key-switches input.

3. Voltage-sensing input.

• Package type:

4. Mechanical input. (Z/1)

5. Photo couples input. (Z/4)

6. Mechanical input. (Z/2)

EM83812AP : 16DIP, Photo couples input. (Z/1) EM83812DP: 16DIP, Mechanical input. (Z/1)

EM83812BP : 16DIP, Key-switches input.

EM83812CP : 16DIP, Voltage-sensing input.

EM83812EP : 16DIP, Photo couples input. (Z/4)

EM83812FP : 16DIP, Mechanical input. (Z/2)

APPLICATION

• Serial PnP scrolling mouse.

PIN ASSIGNMENT

EM83812A/B/C/D/E/FP

OSCR

OSC.OUT

RTS

RXD

OPT

VSS

* This specification are subject to be changed without notice.

9.3.1999

12 3 4 5 6 7...11

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