Pin functions – DMC TSC-40/IC User Manual
Page 6
Document No. DER-S0100A
5
Version 1.4 ©2012 DMC Co., Ltd.
TSC-40/IC Product Specification
3. Pin functions
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
V
REF
I
A/D converter reference voltage input pin; Vcc is connected.
6
RST
I
Reset input pin (active L).
7
CNV
SS
I
Operation mode control pin; Vss is connected.
8
V
CC
I
Power supply input pin; Vcc is connected.
9
X
IN
I
Clock input pin; When using external clock, clock is input to this pin.
10
X
OUT
O
Clock output pin; When using external clock, this pin is opened.
11
V
SS
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.