fma1127dc Fujitsu Microelectronics, Inc., fma1127dc Datasheet - Page 12

• Manufacturer Part Number: fma1127dc
• Description: Touch Sensor Controller
• Manufacturer: Fujitsu Microelectronics, Inc.

Touch Sensor Controller
Typical Application Circuit
Notes:
• The voltage range of VDD can be from 2.3V to 5.5V. If internal LDO is used, it should be from 3V to 5.5V.
• Pull-Up resistors are required for I
• Each tuning capacitor is an optional component depending on PCB layout environment.
• The circuit above is a typical application circuit using an internal LDO.
• RESET_N pin should be connected to host MCU GPIO and needs an RC filter. (R1=10KΩ, C1=1uF)
• For LED control through DIO ports, sink current circuit is mandatory as shown above.
10
From MCU
resistor is typically used.
Fujitsu Microelectronics America, Inc.
MCU
MCU
MCU
(LED Control Circuit)
DIO_N
R1
2K
10K
1uF
R2
2K
C1
RESET_N
VDD
R3
10
1
2
3
4
5
6
7
8
9
TINT
DIO_1
SCL
GINT
BEEP
TCLK
DIO_10
DIO_0
SDA
DIO_11
2
C communication. For 5V application, 2K ohm resistor is typically used. For 3V application, 1K ohm
FMA1127DC
40N
VLDO
VPH
VGG
V25
S6
S7
S3
S4
S5
S8
30
29
28
27
26
25
24
23
22
21
VDD
Touch PAD 10
Touch PAD 11
Touch PAD 0
Touch PAD 4
Touch PAD 5
Touch PAD 6
Touch PAD 7
Touch PAD 8
Touch PAD 9
Touch PAD 1
Touch PAD 2
Touch PAD 3
Data Sensor
Tuning Cap
Touch PAD 0~11