DMC TSC-40-IC User Manual
Analog Resistive Touch Screen Controller
TSC-40/IC product specification
TSC-40/IC Product Specification
Table of Contents
1. PRODUCTS OUTLINE ................................................................................................. 2
1-1. Scope of Application ................................................................................................................... 2
1-2. Outline......................................................................................................................................... 2
1-3. Features ...................................................................................................................................... 2
1-4. General specification ................................................................................................................... 3
2. Pin layout and representation ........................................................................................ 4
3. Pin functions ............................................................................................................... 5
4. Initial setting ................................................................................................................ 7
4-1. EEPROM setting ......................................................................................................................... 7
4-2. Touch screen mode setting ........................................................................................................ 7
4-3. Power supply voltage setting ...................................................................................................... 7
5. Data sheet .................................................................................................................. 8
5-1. Absolute maximum rating ........................................................................................................... 8
5-2. Recommended operational conditions ......................................................................................... 9
5-3. Timing requirement ................................................................................................................... 10
5-4. DC standards ............................................................................................................................ 11
6. Packaging Specification .............................................................................................. 12
6-1. Outline....................................................................................................................................... 12
6-2. Notes on storage/handling ........................................................................................................ 12
6-3. Basic packaging ........................................................................................................................ 12
6-4. Small group packaging ............................................................................................................. 13
6-5. Tray specification ...................................................................................................................... 14
6-6. Product name label specification .............................................................................................. 14
7. Storage Specification ................................................................................................. 15
7-1. Storage Conditions.................................................................................................................... 15
7-2. Baking ....................................................................................................................................... 15
8. Implementation Temperature Specification ................................................................... 16
9. Terminal Pin Specification ........................................................................................... 17
10. Cleaning ................................................................................................................. 17
11. Changes and improvements ...................................................................................... 18
11-1. Version history ........................................................................................................................ 18
12. Warranty ................................................................................................................. 19
12-1. Warranty Period ...................................................................................................................... 19
12-2. Warranty Target ...................................................................................................................... 19
12-3. Warranty Exceptions ............................................................................................................... 19
13. Notes on use ........................................................................................................... 20
13-1. Overall handling ...................................................................................................................... 20
13-2. Others ..................................................................................................................................... 20
Dimensional Drawing
Circuit Diagram
Document No. DER-S0100A 1 Version 1.4 ©2012 DMC Co., Ltd.
TSC-40/IC Product Specification
1. PRODUCTS OUTLINE
1-1. Scope of Application
This specification applies to the TSC-40/IC.
1-2. Outline
TSC-40/IC is an analog touch screen control IC that performs A/D conversion on analog signal for the
4-wire and 5-wire resistive analog touch screen, and transmits coordination data with 10bit resolution to
the host in a 9600bps serial (asynchronous).
The serial communication enables a connection with PC’s serial port via RS-232C I/F circuit or TTL level.
At the coordinate detection, internal filtering process provides a stabilized coordinate value. By using the
correction function, in addition to the losses that occur in the circuit, display deflection between touch
screen input point that occur in each element and indicator cursor can be corrected to adjust the display
position.
1-3. Features
§ Two coordinate output modes are provided and selected per application: “Coordinate data mode”
where coordinate information is sent with 10bit resolution as it is, and “correction data mode” where
read coordinate is converted to the indicator’s display coordinate and sent.
§ “Correction data mode“ is available after EEPROM is externally attached. It enables to set up to nine
correction points. Coordinate data can be corrected with the base of correction points. Using this
function allows the host driver to make the implementation of correction function unnecessary. In
addition, by placing correction points at the touch screen center and center points of four edges of
touch screen, resistance value deviation of transparent electrode film can be corrected.
§ Two external switch functions are always available in the coordinate (correction) data mode. Two
pieces of external switch information are, at the transmission of coordinate data, included in the
coordinate data as pen-down/pen-up information. Since in the pen-up mode, pen-up data can be
always output to the host, this switch is available as a function switch.
§ At the touch screen input, buzzer and LED outputs are available. Input confirmation via display and
sound is available.
§ When no touch screen input is performed, the state moves to “power-save mode“ so that such
application can be supported that requests a low power consumption.
§ Seven types of coordinate output rates are provided and either can be selected per application among
seven types: six types from 30 to 150p/s plus one type, a point mode that outputs the coordinate only
one time when pen-down is performed.
Document No. DER-S0100A 2 Version 1.4 ©2012 DMC Co., Ltd.
TSC-40/IC Product Specification
Item
Rating
Notes
Power supply voltage
DC 3.3V to 5.5V
Power consumption
29.5mW (standard)
Operating Temp
-20 ˚C to +85 ˚C
(No dew condensation)
Temperature range at storing
-40 ˚C to +125 ˚C
(No dew condensation)
Communication
scheme
Communication scheme
Asynchronous, serial
Each setting is fixed
Communication rate
9600bps
Data length
8bits
Stop bit
1bit
Parity
None
Operation frequency
6MHz
Fixed to 6MHz
Coordinate output rate (point / second)
(1) Point mode
(2) 30p/s (3) 50p/s
(4) 80p/s (5) 100p/s
(6) 130p/s (7) 150p/s
Point Mode: Only when touch screen is
input, pen-down ID is sent once. After
input ends, no pen-up ID is sent.
Linearity error
±3 LSB
Input response time
10ms (TYP)
150p/s, For coordinate data mode.
Coordinate resolution
10bit (1024×1024)
In the correction data function,
resolution follows the setting value
Dimension (mm)
9×9×1.7
1-4. General specification
Document No. DER-S0100A 3 Version 1.4 ©2012 DMC Co., Ltd.
TSC-40/IC Product Specification
INDEX
SEL4/EEP-CS
16
SEL3/EEP-CLK
15
SEL2/EEP-DI
14
LED1
13
P30
12
VSS
11
XOUT
10
XIN
9
17 18
SYD/LL
19
SYU/UL
20
SXL/UR
21
SXR/LR
22
THO
23
THI
24
RxD_I
1
AN2 2 AN3
3
SEL1
4
EEP-DO
5
VREF
6
RST
7
CNVSS
8
VCC
SEL0
25
RxD
26
TxD
27
SW1
28
SW0
29
BEEP
30
AN0
31
AN1
32
TSC-40x
xxx
####
2. Pin layout and representation
Marking specification
TSC-40x Product number x: version number
xxx ROM number
#### Lot number
Document No. DER-S0100A 4 Version 1.4 ©2012 DMC Co., Ltd.
TSC-40/IC Product Specification
Pin
number
Pin name
I/O
Functional description
1
AN2
I/O
Touch screen XL/UR input pin.
2
AN3
I/O
Touch screen XR/LL input pin.
3
SEL1
I
Transition select pin.
H = Auto transition*1 after reset. L = transition by command.
4
EEP-DO
I
EEPROM DO input pin; At using no EEPROM, Vcc or GND is connected.
5
VREF
I
A/D converter reference voltage input pin; Vcc is connected.
6
RST
I
Reset input pin (active L).
7
CNVSS
I
Operation mode control pin; Vss is connected.
8
VCC
I
Power supply input pin; Vcc is connected.
9
XIN
I
Clock input pin; When using external clock, clock is input to this pin.
10
XOUT
O
Clock output pin; When using external clock, this pin is opened.
11
VSS
I
Power supply input pin (GND); GND is connected.
12
P30
O
Opened*2.
13
LED1
O
LED output pin; ON = Lo, OFF = Hi.
14*3
SEL2/EEP-DI
I/O
EEPROM DI signal output pin; When using EEPROM, EEPROM DI is connected.
Whether or not EEPROM is used, connect with GND via resistance.
15*3
SEL3/EEP-CLK
I/O
EEPROM SK signal output pin; When using EEPROM, EEPROM SK is connected.
Touch screen mode setting pin. (L=4-wire, H=5-wire)
Whether or not EEPROM is used, connect with Vcc or GND via resistance.
16*3
SEL4/EEP-CS
I/O
EEPROM setting pin shared with EEPROM CS signal output pin.
EEPROM is set via resistance and Vcc or GND is connected. (L = Used, H = Not
used).
When using EEPROM, EEPROM CS is connected.
17 O
Unused pin; Opened.
18
SYD/LL
O
Touch screen LL control pin.
19
SYU/UL
O
Touch screen UL control pin.
20
SXL/UR
O
Touch screen UR control pin.
21
SXR/LR
O
Touch screen LR control pin.
22
THO
O
Pen down detection pin.
23
THI
I
In power-save mode, start signal input pin by pen down.
24
RxD_I
I
In power-save mode, start signal input pin by command reception.
Only used serial mode, RxD is connected.
25
SEL0
I
If power supply voltage is 4.0 to 5.5V, GND is connected. If power supply voltage is
3.3 to 4.0V, Vcc is connected.
26
RxD
I/O
Data receive pin.
27
TxD
I/O
Data send pin.
28
SW1
I
SW1 input pin *4; H = ON = 1, L = OFF = 0.
29
SW0
I
SW0 input pin *4; H = ON = 1, L = OFF = 0.
30
BEEP
O
BEEP output pin; Hi output; Output frequency =2.5kHz, Output time =50ms.
31
AN0
I
Touch screen YD/LL input pin.
32
AN1
I
Touch screen YU/Sense input pin.
3. Pin functions
Document No. DER-S0100A 5 Version 1.4 ©2012 DMC Co., Ltd.
TSC-40/IC Product Specification
*1: Auto transition = Mode changes by a command are not performed. It becomes a “Coordinate Data
Mode (150pps)” immediately after reset.
*2: Always open. If connected with VCC, VSS, or other circuit, an error operation may occur.
*3: About pin number 14, 15 and 16, immediately after a power supply injection, it works as an input
terminal and becomes an output terminal after that. Do not open these terminals.
*4: If neither SW0 nor SW1 function is used, connect 28 and 29 pins to GND directly.
Document No. DER-S0100A 6 Version 1.4 ©2012 DMC Co., Ltd.
TSC-40/IC Product Specification
SEL4/EEP-CS
VCC
L= Used
H= Not used
CS
(TSC-40/IC)
(EEPROM)
Mode
Pin number 15
4-wire touch screen
GND
5-wire touch screen
Vcc
Power supply voltage
Mode
Pin number 25
3.3 to 4.0V
3.3V mode
Vcc
4.0 to 5.5V
5V mode
GND
4. Initial setting
4-1. EEPROM setting
Depending on that calibration is performed in either TSC-40/IC or host, you can select whether EEPROM
is used or not to store the correction data. EEPROM selection can be set via pin number 16, where
hardware reset release enables the setting.
4-2. Touch screen mode setting
Touch screen mode setting for 4-wire/5-wire is performed by setting pin number 15 to “H” or “L”. When
power supply is turned on, or hardware reset is released, pin number 15 is read to turn on in either
4-wire/5-wire mode.
4-3. Power supply voltage setting
Power supply mode setting for 3.3V/5V is performed by setting pin number 25 to “H” or “L”. When power
supply is turned on, or hardware reset is released, pin number 25 is read to turn on in either 3.3V mode/5V
mode.
*When you operate it with 3.3V mode, the inside frequency of CPU works at 3MHz, and the sampling rate
is 80pps max in calibration data mode.
Document No. DER-S0100A 7 Version 1.4 ©2012 DMC Co., Ltd.
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