O
PTICAL
M
OUSE
S
ENSOR
IC
ATA1088XA
Notice
Some content in the datasheet can be altered without notice
@Lab
Optical Mouse Sensor “ ATA1088XA ” Data Sheet
@Lab
ATA1088XA
Optical Mouse Sensor
Data Sheet
INTRODUCTION
Description
The ATA1088 ("Mighty") is an optical sensor with capability of replacing current track ball mouse of
computer system. How the most common optical sensor for mouse works today is:
The sensor
captures "snapshots" of the work surface at 1,700 times per second, then the captured images are
sent to an arithmetic unit to determine direction and magnitude of movement in accordance with speed
and acceleration.
However, the key differences in ATA1088 from other optical sensors are that it is designed based on a
system level architecture so that it can eliminate side parts resulting in saving extra manufacturing
costs.
Additionally, PS/2 interface is included within Mighty so that no MCU is need to interface
through PS/2. ATA1088 also tolerates to all different magnitudes of movement so that the sensor can
be used for design purpose where accuracy is the most important factor as well as for gaming purpose
where speed would be the critical factor.
The sensor is in a 24-pin optical DIP package and comes with the default resolution of 400 counts per
inch (cpi) and the rate of motion up to 12.75 inches per second.
Page
2/13
June, 2003
@Lab
Optical Mouse Sensor “ ATA1088XA ” Data Sheet
Features
Optical navigation technology
No mechanical parts
High reliability
Complete 2-D motion sensor
High speed motion detection
Proprietary enhanced navigation accuracy over a wide variety of surfaces
No precision optical alignment
Single 5.0 volt power supply
Low operation current
PS/2 interface is included
Power Conservation Mode during times of no movement (No Motion).
Applications
Mice for desktop PC’s, Workstations, and notebook PC’s
Trackballs
Integrated input devices
Page
3/13
June, 2003
@Lab
Optical Mouse Sensor “ ATA1088XA ” Data Sheet
Top View of ATA1088XA
24
23
22
21
20
19
18
17
16
15
14
11
10
ATA1088XA
XXXXXXXX
Description
Reserved/Open (I)
Reserved/Open (I)
Reserved/Open (I)
Reserved / Tied to VDD(I)
Reserved/Open (I)
LED On/Off (O)
Reserved/Open (I)
Power
Resetb (I)
Ground
Mechanical or Optical Wheel
Selection (I)
PS2 Clock (I/O)
PS2 Data (I/O)
Ground
Left Button (I)
Power
Wheel A (I)
Middle Button (I)
Wheel B (I)
Right Button (I)
Oscillator (I)
Ground
Power
Power
12
9
1
2
3
4
5
6
7
Pinout
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
Name
TEST1
TEST2
TEST3
TEST4
TEST5
XY_LED
TEST7
VDD
RESETB
VSS
WHL_SEL
PS2_CL
PS2_DA
VSS
LB_SW
VDD
Z_A
MB_SW
Z_B
RB_SW
OSC
VSSA
VDDA
VDDA
Note: Pin assignments can be altered without notice
Page
4/13
8
@Lab
13
June, 2003
@Lab
Optical Mouse Sensor “ ATA1088XA ” Data Sheet
ELECTRICAL CHARACTERISTICS
Parameter
Absolute Maximum Ratings
Storage Temperature
Operating Temperature
Supply Voltage
Input Voltage
ESD
Tstg
Topr
Vdd
Vin
-
°C
°C
V
V
V
−20
0
−0.5
Vss−0.3
200
2000
70
50
7.0
Vdd+0.3
All pins, machine model
All pins, human body model
Symbol
Unit
Min.
Typ.
Max.
Note
Recommended Operating Conditions
Operating Temperature
Supply Voltage
Power Supply Rise Time
Clock Frequency
Distance from lens reference
plane to surface
Speed
Topr
Vdd
Vrt
fclk
D
S
°C
V
msec
MHz
mm
Inch/sec
2.0
-
0
4.5
-
25
5.0
50
6
2.2
-
2.4
12.75
40
5.5
100
AC Electrical Specification (Recommended operating conditions: Temp=25°C, Vdd=5.0V, and CLK=6MHz)
PS/2 Motion Report Rate
Motion Scale Factor
Response Time
Power-Up Delay
Trsp1
reports
/sec
counts
/sec
msec
msec
-
-
8.7
-
100
400
10.9
500
-
-
13.1
-
Movement to data in no motion
mode
See R7 and C6 in the
application circuit.
See PS/2 Timing Diagrams
DC Electrical Specification (Recommended operating conditions: Temp=25C and Vdd=5.0V)
Supply Current (in Motion)
Supply Current (No Motion)
Input Low Voltage
Input High Voltage
OSC Input Low Voltage
OSC Input High Voltage
Output Low Voltage (LED)
Output High Current (LED)
Idd
Idd1
V
IL
V
IH
V
OIL
V
OIH
V
OLL
I
OHLED
mA
mA
V
V
V
V
V
mA
-
-
-
2.0
-
3.5
-
1.5
12
1.2
-
-
-
-
0.3
4
25
2.5
0.8
-
1.5
-
0.5
6.5
Page
5/13
June, 2003
京公网安备 11010802033920号
EEWORLD
