fma1127da Fujitsu Microelectronics, Inc., fma1127da Datasheet - Page 7
fma1127da
Manufacturer Part Number
fma1127da
Description
Touch Sensor Controller
Manufacturer
Fujitsu Microelectronics, Inc.
Datasheet
1.FMA1127DA.pdf
(32 pages)
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There are three modes in APIS:
APIS mode 1: reports the strongest output only (Figure 3).
APIS mode 2: reports all outputs that exceeds pre-defined thresholds (value of Strength Threshold register) (Figure 4).
APIS mode 3: reports two strongest outputs (suitable for multi-touch applications) (Figure 5).
All three modes are described in the Figures below. The red-colored circles and bars show the output.
Touch Interference
Touch Interference
Touch Interference
Area
Area
Area
Real Touch Out put
Real Touc h Output
Real Touc h Output
1
4
7
*
1
4
7
*
1
4
7
*
2
5
8
8
0
0
2
5
8
8
0
0
2
5
8
8
0
0
3
6
9
#
3
6
9
#
3
6
9
#
Touch Output by APIS III
Touc h Out put by APIS I
Touch Output by APIS II
1
4
7
*
1
4
7
*
1
4
7
*
2
5
8
8
0
0
2
5
8
8
0
0
2
5
8
8
0
0
3
6
9
#
3
6
9
#
3
6
9
#
APIS Mode II
APIS Mode III
APIS Mode I
Output Data
Output Data
Output Data
st rength
st rength
st rength
Threshold
Strength
*
*
*
8
8
8
0
0
0
#
#
#
FMA1127DA
Fujitsu Microelectronics America, Inc.
5
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