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PDF EM83812BP Data sheet ( Hoja de datos )
| Número de pieza | EM83812BP | |
| Descripción | ALL-INONE PLUG & PLAY SCRLLING SERIAL MOUSE CONTROLLER | |
| Fabricantes | ELAN Microelectronics Corp | |
| Logotipo |  |
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EM83812
ALL-INONE PLUG & PLAY SCRLLING SERIAL MOUSE CONTROLLER
Preliminary
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)
4. Mechanical input. (Z/1)
2. Key-switches input.
5. Photo couples input. (Z/4)
3. Voltage-sensing input.
6. Mechanical input. (Z/2)
• Package type:
EM83812AP : 16DIP, Photo couples input. (Z/1) EM83812DP: 16DIP, Mechanical input. (Z/1)
EM83812BP : 16DIP, Key-switches input.
EM83812EP : 16DIP, Photo couples input. (Z/4)
EM83812CP : 16DIP, Voltage-sensing input. EM83812FP : 16DIP, Mechanical input. (Z/2)
APPLICATION
• Serial PnP scrolling mouse.
PIN ASSIGNMENT
EM83812A/B/C/D/E/FP
VDD
OSC.OUT
Z1
Z2
RTS
RXD
OPT
VSS
1
2
3
4
5
6
7
8
16 OSCR
15 Y2
14 Y1
13 X2
12 X1
11 L
10 M
9R
* This specification are subject to be changed without notice.
9.3.1999 1
1 page  
EM83812
ALL-INONE PLUG & PLAY SCRLLING SERIAL MOUSE CONTROLLER
ABSOLUTE MAXIMUM RATINGS
Preliminary
Parameter
Ratings
Unit
Min.
Max.
Temperature under bias
0
70 °C
Storage temperature range
-65
150 °C
Supply voltage
-0.3 7.5 V
Power dissipation
- 500 mW
DC ELECTRICAL CHARACTERISTICS (TA=25°C to 70°C, Vds=5.6V))
Parameters
Sym. Min. Typ. Max.
Unit
Operating voltage
Vdd 4.5 6 6.5
Vrts - 12 13
Operating current
Iop1 -
- 0.8
(Vdd=5.4, RTS=Vdd)
Operating current
Iop2 3 - -
(Vdd=6.2, RTS=Vdd)
RTS Operating current
Irts1 -
- 1.8
(Vdd=5.6, RTS=11V)
RTS operating current
(Vdd=5.6, RTS=12V) Irts2
4
-
-
RXD high output voltage
Irh 2 - -
(Vrh=Vrts=2.6V)
RXD low output voltage
Irl - - -2
(Vrh=Vss+2.6V)
RTS high input voltage
Vrts+ 9.6
-
-
RTS low input voltage
Vrts-
-
- 6.8
X1,X2,Y1,Y2,Z1,Z2 (photo mode)
Ipl 70 - -
low input reference current
X1,X2,Y1,Y2,Z1,Z2 (photo mode)
Iph - - 106
high input reference current
X1,X2,Y1,Y2,Z1,Z2 (photo mode)
Vpl1
0.8
-
1.2
input current
(input impedance) (80µA)
X1,X2,Y1,Y2,Z1,Z2 (photo mode)
Vpl2
1.5
-
2.1
input current
(input impedance) (500µA)
L,M,R,OPT,Z1,Z2 (key mode)
Vail -
- 1.5
input low voltage
Z1,Z2 (key mode)
Vaih 3.5
-
-
input high voltage
Z1,Z2 (voltage mode)
Vs -0.3 - +0.3
sensitivity
L,M,R,Z1,Z2 (key & voltage mode)
Imi 18 - 56
input current
(Vds=5.6V)
OPT Ixi -18 - -56
input current
OPT
Idc 4.5 -
-
high output current
(Iopt=20mA)
L,M,R,X1,X2,Y1,Y2,Z1,Z2
Iil 0 - -1.0
input leakage current
(Vds=0V)
OPT Iih 0 - 1.0
input leakage current
(Vds=5.6V)
V
V
mA
mA
mA
mA
mA
mA
V
V
µA
µA
V
V
V
V
V
µA
µA
V
µA
µA
* All voltage in above table are compared with VSS.
* This specification are subject to be changed without notice.
9.3.1999 5
5 Page 
EM83812
ALL-INONE PLUG & PLAY SCRLLING SERIAL MOUSE CONTROLLER
Preliminary
* This specification are subject to be changed without notice.
9.3.1999 11
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet EM83812BP.PDF ] | |
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