FMA1125DC-24S Fujitsu Semiconductor America Inc, FMA1125DC-24S Datasheet - Page 6

• Manufacturer Part Number: FMA1125DC-24S
• Description: IC CTLR TOUCH SENSOR 24SSOP
• Manufacturer: Fujitsu Semiconductor America Inc
• Type: Capacitiver

Specifications of FMA1125DC-24S

• Touch Panel Interface: *
• Number Of Inputs/keys: *
• Resolution (bits): *
• Data Interface: I²C
• Data Rate/sampling Rate (sps, Bps): *
• Voltage Reference: *
• Voltage - Supply: 2.4 V ~ 5 V
• Current - Supply: 100µA
• Operating Temperature: -40°C ~ 90°C
• Mounting Type: Surface Mount
• Package / Case: 24-SSOP
• Output Type: Logic
• Interface: I²C
• Input Type: Logic
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 865-1049-2

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)