fma1127dc Fujitsu Microelectronics, Inc., fma1127dc Datasheet - Page 14

• 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.
12
resistor is typically used.
Fujitsu Microelectronics America, Inc.
Data Sensor
Tuning Cap
Tou ch PAD
Touch_Sensor _4
Touch_Sensor _3
Touch_Sensor _2
Touch_Sensor _1
Touch_Sensor _0
Touch_Sensor _7
Touch_Sensor _6
Touch_Sensor _5
Touch_Sensor _8
From MCU
2
C communication. For 5V application, 2K ohm resistor is typically used. For 3V application, 1K ohm
R1
10K
1uF
To uch_Sensor _2
Touch_Sensor _3
Touch_Sensor _1
Touch_Sensor _0
C1
RESET_N
RESET_N
VCC (3V~5V)
28
32
25
26
27
29
30
31
DIO_3
DIO 2
S2
S1
S0
RESET
S3
ID
1
FMA1127DC
24
2
23
2K
2K
3
32N
22
4
21
5
10nF
20
6
19
(LED Control Circuit)
DIO_N
7
18
CONFIG_0
CONFIG_1
8
17
DIO_6
DIO_7
DIO_9
DIO_8
AREF
S8
VDD
16
15
14
13
12
10
11
9
Touch_Sensor _8
Reference Sensor
Tuning Cap
X pF