4d Systems 2.8" TFT Intelligent Display SK-28PTU SK-28PTU Data Sheet
Product codes
SK-28PTU
4D SYSTEMS µLCD-28PTU
© 2014 4D SYSTEMS Page 5 of 22 www.4dsystems.com.au
mi
cr
oLC
D
PIC
ASO
DI
SP
LA
Y
3. Pin Configuration and Summary
H2 Pin Outs (Programming Header)
Pin
Symbol
I/O Description
1
N/C
-
Not connected
2
RES
I
Master Reset signal. Internally pulled up to 3.3V via a 10K resistor. An active Low
pulse greater than 2 micro-seconds will reset the module. If the module needs to
be reset externally, only use open collector type circuits. This pin is not driven
low by any internal conditions. The host should control this pin via one of its port
pins using an open collector/drain arrangement.
pulse greater than 2 micro-seconds will reset the module. If the module needs to
be reset externally, only use open collector type circuits. This pin is not driven
low by any internal conditions. The host should control this pin via one of its port
pins using an open collector/drain arrangement.
3
N/C
-
Not connected
4
GND
P
Supply Ground
5
N/C
-
Not connected
6
RX
I
Asynchronous Serial Receive pin, TTL level. Connect this pin to the Transmit (Tx)
signal of other serial devices. Used in conjunction with the TX pin for
programming this microLCD. This pin is tolerant up to 5.0V levels.
signal of other serial devices. Used in conjunction with the TX pin for
programming this microLCD. This pin is tolerant up to 5.0V levels.
7
N/C
-
Not connected
8
TX
O
Asynchronous Serial Transmit pin, TTL level. Connect this pin to the Receive (Rx)
signal of other serial devices. Used in conjunction with the RX pin for
programming this microLCD. This pin is tolerant up to 5.0V levels.
signal of other serial devices. Used in conjunction with the RX pin for
programming this microLCD. This pin is tolerant up to 5.0V levels.
9
N/C
-
Not connected
10
+5V
P
Main Voltage Supply +ve input pin. Reverse polarity protected. Range is 4.0V to
5.5V, nominal 5.0V.
5.5V, nominal 5.0V.
I = Input, O = Output, P = Power
P1 – Lithium Battery Header
H1 – I/O Expansion Header
H2 – Programming Header
H1 H2 P1
1
29
2
30
1
9
2
10
1
5
2
6