fma1127dc Fujitsu Microelectronics, Inc., fma1127dc Datasheet

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fma1127dc

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

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Price
Part Number:
fma1127dc_40N
Manufacturer:
FUJITSU
Quantity:
229
Overview
The FMA1127DC is a low-power, compact, flexible touch sensor
controller that converts capacitance generated between the human
body and a conductive touch pad to digital data without any analog
signal processing.
Its programmability increases design flexibility and gives better
performance and stability for a broad range of applications.The
FMA1127DC’s Automatic Impedance Calibration (AIC™) function
can be easily configured to support different sensitivities for
individual channels independently as well as to change values of
parameters, such as calibration intervals. AIC may also be
temporarily paused and resumed by a host MCU.
Among the many new features of the FMA1127DC is Adjacent
Pattern Interference Suppression (APIS™). APIS is a filtering
function that eliminates adjacent key or pattern interference. The
FMA1127DC also gives touch-strength output in addition to touch
on/off output.There is a number of DIOs depending on the package
type that can be configured and programmed to meet a customer’s
specific needs, giving customers even greater flexibility and value.
The FMA1127DC comes with various package types to support
different number of input channels and DIOs.
The FMA1127DC touch sensor controller is developed and owned by
ATLab Inc., South Korea, and is distributed by Fujitsu
Microelectronics America, Inc.
Features
• Patented full-digital architecture
• Extremely low power consumption (140
• Supports 12 input channels (40QFN and 30SSOP) or 9 input
• Programmable registers to characterize applications
• I
• Configurable Automatic Impedance Calibration (AIC
• Two types of interrupts (GINT for general purpose and TINT for
• 8-bit resolution of touch strength data (256 steps)
channels (32QFN and 24SSOP) or 6 input channels (24QFN and
20SSOP)
touch detection)
2
C interface with the host MCU
FMA1127DC
Touch Sensor Controller
μ
A in active mode)
TM
)
• Three different modes for Adjacent Pattern Interference Suppres-
• Configurable DIO pins as direct touch outputs, extended GPIOs,
• Beep generation for tactile feeling
• Idle and Sleep modes for power saving
• De-bounced touch outputs and external inputs
• 5 steps of FIFO to save external inputs for a slow speed of MCU
Applications
• Portable devices such as PDAs, cellular phones, MP3
• Home appliances and consumer electronic products
• Computer input devices such as mice and keyboards
sion (APIS
or external interrupt inputs
players, remote controllers, and other integrated input devices
Touch Pad System Model
Zref
Zin
Touch Pad
TM
Touch Pad System Model
Zref
Zin
Touch Pad
)
Impendance
Detection
Change
Impendance
Detection
Zin < Zref
Change
Impedance Status
Impedance Status
Zin
Zref
Zin
Zref
Ztouch
Touch
Detected

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fma1127dc Summary of contents

Page 1

... The FMA1127DC comes with various package types to support different number of input channels and DIOs. The FMA1127DC touch sensor controller is developed and owned by ATLab Inc., South Korea, and is distributed by Fujitsu Microelectronics America, Inc. ...

Page 2

Touch Sensor Controller Table of Contents Ordering Information ...............................................................................................................................................................................1 Package Pinouts ......................................................................................................................................................................................1 Electrical Characteristics ..........................................................................................................................................................................3 Operation Principles.................................................................................................................................................................................4 Touch Detection...................................................................................................................................................................................... 4 AIC™ (Automatic Impedance Calibration)................................................................................................................................................. 4 APIS™ Touch Output .............................................................................................................................................................................4 Functional Characteristics ........................................................................................................................................................................6 2 Communication Specifications for I C ........................................................................................................................................................ 7 ...

Page 3

... FMA1127DC-24N 24QFN FMA1127DC-30S 30SSOP FMA1127DC-24S 24SSOP FMA1127DC-20S 20SSOP Package Pinouts RESET_N 34 ID_1 35 FMA1127DC ID_0 36 40N DIO_5 37 DIO_4 38 DIO_3 39 DIO_2 40 40-Pin QFN Package Dimension 5mm x 5mm x 0.85mm 4mm x 4mm x 0.9mm 4mm x 4mm x 0.85mm 12.7mm x 10.3mm x 2.5mm 8.2mm x 7.8mm x 2.0mm 6 ...

Page 4

Touch Sensor Controller RESET_N DIO_5 3 DIO_4 4 DIO_3 5 DIO_2 6 DIO_1 7 DIO_0 8 SDA 9 SCL 10 TINT 11 GINT 12 TCLK 13 VSS 14 AREF 15 30-Pin SSOP 2 Fujitsu Microelectronics America, Inc. ...

Page 5

... GPIO Driving Current Iol Digital Output Low Current Conditions When System Clock is 1.6MHz When System Clock is 1.6MHz Load = 100pF Load = 100pF When using internal 2.5V LDO and internal Clock When using external 2.5V LDO At Vol = 0.6V At Vol = 0.4V FMA1127DC Min. Typ. Max. - 2.3 3.3 5 ...

Page 6

... AIC input parameters. More detailed information is available in the FM1127 Tuning Guide. The ICD engine residing in the FMA1127DC controls reference impedance values for each sensor input pin by acquiring each input impedance data. It periodically updates all reference impedance values under the condition that all twelve touch pads remain in no-touched status. This auto-calibration function absorbs environmental changes and guarantees product stability. APIS™ ...

Page 7

... Touch Output by APIS Touch Output by APIS III FMA1127DC APIS Mode I Output Data st rength APIS Mode II Output Data st rength Strength Threshold APIS Mode III Output Data st rength Fujitsu Microelectronics America, Inc. 5 ...

Page 8

Touch Sensor Controller Functional Characteristics System Clock: 1.6MHz, Sensor Clock: 20kHz System Clock: 1.6MHz, Sensor Clock: 10kHz System Clock: 800kHz, Sensor Clock: 10kHz System Clock: 800Hz, Sensor Clock: 5kHz System Clock: 400kHz, Sensor Clock: 5kHz System Clock: 400kHz, Sensor Clock: ...

Page 9

... Bus Standard-Mode Min. -0.5 -0.5 3.0 0 3 with a Bus ILmax n/a -10 DDmax 2 C bus system levels must relate their input levels to the V is switched off. DD FMA1127DC Fast-Mode Max. Min. Max n/a 1.5 n/a 0.3 V -0.5 0 (1) DD n/a n/a (2) 0 (2) (2) DD n/a n/a (2) 0 (2) (2) DD ...

Page 10

Touch Sensor Controller Table 2. AC Electrical Specifications for I Symbol Parameter SCL Clock Frequency f SCL Hold Time (repeated) START Condition. After this t HD:STA Period, the First Clock Pulse is Generated t LOW Period of the SCL Clock ...

Page 11

... Touch Interrupt, it can be generated when touch status is changed. General Interrupts including touch interrupt and EINT. Can be masked. Beep Output Chip ID Select(00:0x58, 01:0x59, 10:0x5A, 11:0x5B) Test pins. Should be grounded. Power (2.3V-5.5V) 2.5V Regulator Power Output 2.5V Power Input Ground FMA1127DC S9 20 S10 19 18 S11 AREF 17 16 CONFIG_0 ...

Page 12

... Touch Sensor Controller Typical Application Circuit R1 10K RESET_N From MCU 1uF C1 1 DIO_1 DIO_0 3 SDA MCU 4 FMA1127DC SCL MCU 5 MCU TINT 6 GINT 7 BEEP 8 TCLK 9 DIO_11 10 DIO_10 VDD DIO_N (LED Control 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. ...

Page 13

... Touch Interrupt, it can be generated when touch status is changed. General Interrupts including touch interrupt, and they can be masked. Test Pin, Should be grounded Chip ID Select(0:0x58, 1:0x5B) Test pins. Should be grounded. Power (2.5V~5.5V) 2.5V Regulator Power Output 2.5V Power Input Ground FMA1127DC Description Fujitsu Microelectronics America, Inc. 11 ...

Page 14

... 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 Fujitsu Microelectronics America, Inc Touch_Sensor uch_Sensor Touch_Sensor FMA1127DC Touch_Sensor RESET_N 32N RESET DIO_3 31 DIO ...

Page 15

... Touch Interrupt, it can be generated when touch status is changed. General Interrupts including touch interrupt, and they can be masked. Test Pin, Should be grounded Chip ID Select(0:0x58, 1:0x5B) Test pins. Should be grounded. Power (2.5V-5.5V) 2.5V Regulator Power Output 2.5V Power Input Ground FMA1127DC Description Fujitsu Microelectronics America, Inc. 13 ...

Page 16

... 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. 14 Fujitsu Microelectronics America, Inc Touch_Sensor_2 S2 19 Touch_Sensor_1 S1 20 Touch_Sensor_0 FMA1127DC S0 21 24N RESET_ N RESET_ DIO_2 ...

Page 17

... C Data from/to Host CLK from Host Touch Interrupt, it can be generated when touch status is changed. General Interrupts including touch interrupt and EINT. Can be masked Chip ID Select(0:0x58, 1:0x5B) Power (2.5V~5.5V) 2.5V Regulator Power Output 2.5V Power Input Ground FMA1127DC ...

Page 18

... For LED control through DIO ports, sink current circuit is mandatory as shown above. 16 Fujitsu Microelectronics America, Inc. Touch PAD Data Sensor From MCU Tuning Cap FMA1127DC 30S 2 C communication. For 5V application, 2K ohm resistor is typically used. For 3V application, 1K ohm R1 10K RESET_N 1uF ...

Page 19

... I C CLK from Host Touch Interrupt, it can be generated when touch status is changed. General Interrupts including touch interrupt and EINT. Can be masked Chip ID Select(0:0x58, 1:0x5B) Power (2.5V-5.5V) 2.5V Regulator Power Output 2.5V Power Input Ground FMA1127DC VPH VLDO V25 AREF Fujitsu Microelectronics America, Inc ...

Page 20

... 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. 18 Fujitsu Microelectronics America, Inc. FMA1127DC 2K 2K RESET_N 1uF ...

Page 21

... I C CLK from Host Touch Interrupt, it can be generated when touch status is changed. General Interrupts including touch interrupt and EINT. Can be masked Chip ID Select(0:0x58, 1:0x5B) Power (2.5V-5.5V) 2.5V Regulator Power Output 2.5V Power Input Ground FMA1127DC VPH VLDO V25 VSS S8 S9 Description Fujitsu Microelectronics America, Inc ...

Page 22

... 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. 20 Fujitsu Microelectronics America, Inc. FMA1127DC 2K 2K 10K RESET_N ...

Page 23

... Power Connection There are two methods to supply power to the FMA1127DC touch sensor controller. One is to receive V25 core voltage from internal LDO and the other is to receive core voltage from an external power supply. In the case of using internal LDO, the LDO should be turned on in Sleep mode and hence it will cause slightly higher power consumption than using an external power supply for V25 core voltage ...

Page 24

... Touch Sensor Controller Power Sequence To initialize the FMA1127DC properly, please refer to the Power Sequence below when the power is given initially during boot-up. If the reset transition time during power on does not follow the time sequence below, the Internal LDO and oscillator would not operate normally ...

Page 25

... Strength Threshold 4 21 Strength Threshold 5 22 Strength Threshold 6 23 Strength Threshold 7 24 Strength Threshold 8 25 Strength Threshold 9 Notes: Please refer to the FMA1127DC Application Guide for detailed register descriptions. Ads Reg Name 26 Strength Threshold 10 27 Strength Threshold 11 28 Sampling Interval 29 Integration Time 2A ...

Page 26

Touch Sensor Controller Package Dimensions 40QFN Pin # Exposed Pad 31 30 3.8±0 0.35±0.05 0.85±0.05 24 Fujitsu Microelectronics America, Inc. 5.00 5.00 Top View 3.8±0.1 10 Pin # 0.35±0.05 45° 0.40 10 ...

Page 27

... BSC 3.75 BSC 0. 0.60 ø0.50 Dp 0.1 Max. 4.00 BSC 3.75 BSC Top View 4–10 0.900.10 0.05 Max. Side View R0.20 4x 0.500.10 0.500.10 Bottom View 0.650.05 0.20 Ref. Detail ‘A’ FMA1127DC 2. R0.20 2.80 See Detail A 0.40 Typ. +0.05 0.30 -0.07 +0.05 0.20 -0.07 Units Fujitsu Microelectronics America, Inc. ...

Page 28

Touch Sensor Controller 24QFN Pin # Exposed Pad 19 18 2.700. 0.350.05 0.850.05 26 Fujitsu Microelectronics America, Inc. 4.00 4.00 Top View 2.700.01 Pin # (not soldering) 1 0.350.05 0. 0.230.05 Bottom ...

Page 29

... Top View 2.300.10 0.05 Min. 16 10.300.30 15 0.350.10 0.80 Typ. Side View FMA1127DC 0.203 0.600.20 9.53 7.500.20 End View 2.50 Max. Units: mm Fujitsu Microelectronics America, Inc. 27 ...

Page 30

Touch Sensor Controller 24SSOP 24 1.65 ø1.0 1 1.00 4.10 Top View 0.75 1.700.50 0.75 28 Fujitsu Microelectronics America, Inc. ø3.00 7.800.20 +0.0 0.30 -0. 0.65 Typ. Side View 0.25 BSC 0 Min. 12 1.20 8 0.05 Min. ...

Page 31

... Top View 10 0.675 0.675 8 0.65 Typ. Side View FMA1127DC 0.25 BSC 5 10 1.00 9 4.400.10 5.40 0–8 1.00 R0.30 R0.30 +0.10 0.15 -0.05 End View 1.85 Max 0.05 Min. Units: mm Fujitsu Microelectronics America, Inc. 29 ...

Page 32

... Revision May 1, 2009 V1.0 June 15, 2009 V2.1 The FMA1127DC touch sensor controller is developed and owned by ATLab Inc., South Korea, and is distributed by Fujitsu Microelectronics America, Inc. FUJITSU MICROELECTRONICS AMERICA, INC. Corporate Headquarters 1250 East Arques Avenue, M/S 333, Sunnyvale, California 94085-5401 Tel: (800) 866-8608 Fax: (408) 737-5999 E-mail: inquiry@fma ...

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