fma1125dc Fujitsu Microelectronics, Inc., fma1125dc Datasheet - Page 6

• Manufacturer Part Number: fma1125dc
• Description: Touch Sensor Controller
• Manufacturer: Fujitsu Microelectronics, Inc.

Touch Sensor Controller
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.
4
Fujitsu Microelectronics America, Inc.
Real Touch
Real Touch
Real Touch
Touch Interference Area
Touch Interference Area
Touch Interference Area
Figure 3: Operation of APIS Mode 1
Figure 4: Operation of APIS Mode 2
Figure 5: Operation of APIS Mode 3
APIS Touch Touch Output
APIS Touch Touch Output
APIS Touch Touch Output
APIS Mode 1 Touch Out Data
APIS Mode 2 Touch Out Data
APIS Mode 3 Touch Out Data
Confidential
Strength Threshold
Strength Threshold
Strength Threshold
(0x50˜0x57)
(0x50˜0x57)
(0x50˜0x57)