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The following document contains information on Cypress products.
AN702-00013-1v0-E
8-BIT MICROCONTROLLER
New 8FX Family
MB95870K/860K/850K series
Migration to TSCMCU
AN702-00013-1v0-E
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Copyright© 2012 FUJITSU SEMICONDUCTOR LIMITED all rights reserved
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Revision History
Rev
Date
Remark
1.0.0
2012-08-15
Initial Version
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AN702-00013-1v0-E
Contents
REVISION HISTORY ............................................................................................................ 2
CONTENTS .......................................................................................................................... 3
TARGET PRODUCTS .......................................................................................................... 4
1 INTRODUCTION .............................................................................................................. 5
1.1
Purpose................................................................................................................... 5
1.2
Definitions, Acronyms and Abbreviations ................................................................ 5
1.3
Document Overview ................................................................................................ 5
2 OVERVIEW ...................................................................................................................... 6
2.1
ATLab DCC ............................................................................................................. 6
2.2
TSCMCU ................................................................................................................. 7
3 TUNING SYSTEM ............................................................................................................ 8
3.1
3.2
Tuning Hardware ..................................................................................................... 8
3.1.1
DCC Tuning Hardware............................................................................... 8
3.1.2
TSCMCU Tuning Hardware ....................................................................... 9
Touch Software ..................................................................................................... 10
3.2.1
Tuning Viewer .......................................................................................... 10
3.2.2
F-Touch ................................................................................................... 11
4 REGISTER OPERATION ............................................................................................... 12
4.1
Register Definitions ............................................................................................... 12
4.2
Register Accessing................................................................................................ 13
4.2.1
DCC Register Accessing ......................................................................... 13
4.2.2
TSCMCU Register Accessing .................................................................. 13
5 ADVANTAGE OF TSCMCU ........................................................................................... 14
5.1
Extremely Fast ...................................................................................................... 14
5.2
Extremely Low Power ............................................................................................ 14
5.3
Extremely Robust .................................................................................................. 14
5.4
Extremely EASY to implement............................................................................... 14
6 ADDITIONAL INFORMATION ....................................................................................... 15
7 APPENDIX ..................................................................................................................... 16
7.1
List of Figures and Tables ..................................................................................... 16
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Target products
This application note is described about below products;
Series
Product Number (not included Package suffix)
MB95870K
MB95F876K
MB95860K
MB95F866K
MB95850K
MB95F856K
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1 Introduction
1.1
Purpose
This application note describes how to migrate from ATLab’s Digital Contact Controller (DCC)
to Fujitsu’s TSCMCU.
Firstly, this document provides the relationship of ATLab’s DCC and Fujitsu’s TSCMCU.
Then, it covers the principal differences between the two series IC. At last, this document
introduces the feature of TSCMCU.
It assumes that the users have some basic knowledge of ATLab’s DCC and TSCMCU.
1.2
Definitions, Acronyms and Abbreviations
TSC
Capacitance Touch Sensor
TSCMCU
MCU with TSC inside
ATLab’s DCC ATLab’s Digital Contact Controller
AICTM
Automatic Impedance Calibration
TM
APIS
Adjacent Pattern Interference Suppression
F-Touch
F-Touch for SOFTUNE
1.3
Document Overview
The rest of document is organized as follows:
Chapter 2 explains.Overview
Chapter 3 explains Tuning System
Chapter 4 explains Register Operation
Chapter 5 explains Advantage of TSCMCU
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2 Overview
This chapter provides the overview of ATLab’s DCC and Fujitsu’s TSCMCU
2.1
ATLab DCC
ATLab’s Digital Contact Controller contains kinds of low-power, compact, flexible touch
sensor controller that convert capacitance generated between human body and conductive
touch pad to digital data without any analog signal processing.
A host MCU is necessary to support register configuration and touch digital data read. Below
is topological graph of DCC application:
Parameters are loaded to from MCU to DCC
DCC
Touch Pads
MCU
I2C bus
Touch information as interrupt, wake up etc.
Figure 2-1: Topological Graph of DCC Application
Its programmability increases design flexibility and gives better performance and stability for
a broader range of applications. DCC provides configurable Automatic Impedance
Calibration (AICTM) and three different modes for Adjacent Pattern Interference Suppression
(APISTM).
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2.2
TSCMCU
Fujitsu’s TSCMCU is an outstanding One-Chip solution which integrates the F2MC-8FX
MCU and ATLab’s DCC IP. Below shows the topological graph of TSCMCU application:
F2MC-8FX CPU
TS
(DCC)
TSCMCU
Touch Pads
Internal Bus
Figure 2-2: Topological Graph of TSCMCU
It maintains all excellence performance of DCC such as AICTM and APISTM. The integration,
make the register configuration and touch digital data read easier.
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3 Tuning System
This chapter introduces the difference in tuning software interface
The tuning system helps developers to tune the target board with various parameters that
determine the performance of the target touch board. The tuning system is positioned
between the PC and the target touch board. It allows the developers to view all necessary
parameters for tuning and transfers the desired parameters to the touch IC attached on the
target touch board.
Tuning System
PC
Target Board
Tuning
Software
Tuning
Hardware
Figure 3-1: Conceptual Diagram for Tuning System
3.1
Tuning Hardware
3.1.1 DCC Tuning Hardware
Tuning Kit
Target Touch Boards
Figure 3-2: DCC Tuning Hardware
Users can transmit commands to the MCU or receive touch data from the MCU through the
USB interface. The MCU in the tuning kit controls the DCC on the target touch board via the
I2C interface by reading/writing data to access internal registers in the DCC.
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3.1.2 TSCMCU Tuning Hardware
BGMA
Target Touch Board
Figure 3-3: TSCMCU Tuning Hardware
As touch sensor become parts of TSCMCU, extra tools are not required for tuning. Through
cooperation with tuning F-Touch, the BGMA implement register value get and set, touch
data read and so on. The usage of BGMA in this mode is similar with emulation and debug
mode. General information of F-Touch introduced in エラー! 参照元が見つかりません。,
and user may refer to F-Touch user manual MCU-UM-500016: MB2146_540_E-EVB_SW
for more information.
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3.2
Touch Software
The Touch Software installed in the PC will displays various registers to control and read to
show current impedance values of all input channels in real time. It powerfully support
parameter acquisition and setup, touch status monitor, touch data save, and operation time
calculation.
3.2.1 Tuning Viewer
ATLab provides Tuning Viewer as tuning software of DCC. This software provides MCU
configuration control window additionally. It’s used to configure parameters of MCU which
build up in Tuning kit, and tuning out one set of parameters of host MCU.
A typical tuning window of Tuning Viewer is shown in Figure 3-4. It contains:

Main Window

Control Register Module

AIC Tuning Window

Manual Register Control Window

MCU Configuration Window

Data Save Window

Time Chart Window
Figure 3-4: Main Window of Tuning Viewer
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3.2.2 F-Touch
Fujitsu provides F-Touch of TSCMCU. This software provides outstanding vision and
functions:

Implement graphic display of Impedance value.

Close up touch status monitor display in one area

Additional Touch Area Calculation window

Data save dialog provide touch action information (channel number, touch time)

Configuration file import and export function

Support both Chinese and English
A typical tuning window of Tuning Viewer is shown in Figure 3-5. It contains:

Main Window

Time Chart Window

Data Save and Test Window

Touch Area Calculation
Figure 3-5: Main Window of F-Touch
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4 Register Operation
This chapter introduces the difference in register accessing
4.1
Register Definitions
Most of registers have same name and function definition in Fujitsu’s TSCMCU and ATLab’s
DCC, as TSCMCU integrated the DCC IP. The register definitions details have been listed in
below table (take ATA2538 and MB95F876 as examples of DCC and TSCMCU):
Table 4-1: Register Map in DCC and TSCMCU
Register in DCC
Register in TSCMCU
Description
ALPHA n
ALPHn
Strength Threshold n
STRTHn
Strength n
STRn
Calibrated Impedance n
CALIPn
TS calibrated impedance register ch. n
Impedance n
IMPEn
TS impedance register ch. n
PAn_R_SEL
RSELn
TS resistance select register ch. n
Beep Frequency
BPDUR
TS beep duration setting register
TS alpha value setting register ch. n
TS touch strength threshold setting register ch. n
TS touch strength register ch. n
TER0
TS touch channel enable register 0
TER1
TS touch channel enable register 1
N/A
PSC
TS prescaler control register
Warm Reset
WRESET
Beep Period
BPDUR
TS beep duration setting register
DIOR1
TS direct output control register 1
DIOR2
TS direct output control register 2
DIOR3
TS direct output control register 3
Feature
FTSEL
TS feature select register
AIC Wait Time
AICWAT
TS AIC wait time setting register
Calibration Interval
CALITV
TS calibration interval setting register
Integration Time
ITGTM
TS integration time setting register
IDLE Time
IDLETM
TS idle time setting register
Control1
CONTROL
Interrupt Mask
INTMR
TS interrupt mask register
Interrupt Clear
INTCR
TS interrupt clear register
FILTER Period
FLTP
FILTER Threshold
FLTTH
Reference Delay
REFDLY
BETA
BETA
TS beta value setting register
Touch Byte L
TOUCHL
TS touch data register (lower)
Touch Byte H
TOUCHH
TS touch data register (upper)
Interrupt Pending
INTPR
PA Configuration
GPIO Configuration
TS warm reset register
TS control register
TS filter period setting register
TS filter threshold setting register
TS reference delay setting register
TS interrupt pending register
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4.2
Register Accessing
4.2.1 DCC Register Accessing
DCC register access needs I2C bus protocol support for configuration and data read
operation.
4.2.2 TSCMCU Register Accessing
Since TS module is part of the MCU, users can access directly just like accessing other
registers.
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5 Advantage of TSCMCU
This chapter introduces the advantages of TSCMCU
5.1
Extremely Fast
Extremely FAST Response Time

No complex signal processing needed

Register programmable, 10 times/sec (100msec) ~ 5,000 times/sec (0.2msec)

Allow data management, filtering, etc.
5.2
Extremely Low Power
Extremely LOW Power Consumption

Supply current typical
 120µA Active mode, 37 µA Idle mode

5.3
Perfectly fit to portable products
Extremely Robust

Consistent sensitivity through AIC™

Resistant to outer signal disturbances through differential signal format

Water resistant designs possible

ESD protected up to 8KV (HBM) / 15KV (set / air)
5.4
Extremely EASY to implement

One single electrode is sufficient for touch channel

Advanced hardware functionality
 AIC™ impedance calibration
 APIS™ touch filtering

High design flexibility
 Individual channel sensitivity
 Touch strength output
 TSC can be either located close to touch pads or on the main PCB
 Touch pad can be as small as 1mm x 1mm

Evaluation Board with F-Touch Program available
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6 Additional Information
For more Information on FUJITSU semiconductor products, visit the following websites:
http://www.fujitsu.com/global/services/microelectronics/documents/
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7 Appendix
7.1
List of Figures and Tables
Table 4-1: Register Map in DCC and TSCMCU ................................................................... 12
Figure 2-1: Topological Graph of DCC Application ................................................................. 6
Figure 2-2: Topological Graph of TSCMCU ............................................................................ 7
Figure 3-1: Conceptual Diagram for Tuning System ............................................................... 8
Figure 3-2: DCC Tuning Hardware ......................................................................................... 8
Figure 3-3: TSCMCU Tuning Hardware ................................................................................. 9
Figure 3-4: Main Window of Tuning Viewer .......................................................................... 10
Figure 3-5: Main Window of F-Touch ................................................................................... 11
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