Datasheet

4D SYSTEMS uLCD-35DT Display Module
© 2014 4D SYSTEMS Page 6 of 24 www.4dsystems.com.au
uLCD-35DT Display Module
Continued overleaf…
I = Input, O = Output, P = Power, A = Analog Input
H1 Pinout (Expansion Header)
Pin
Symbol
I/O
Description
1
PA3
I/O/A
General Purpose I/O pin with Analog Capability. This pin is 5.0V tolerant when
used as a Digital, with a range of 0-3.3V when used as an Analog Input
2
SPK-
O
Used in conjunction with SPK+, this is used to connect an external speaker for
application that require a larger more powerful speaker than what is supplier
on-board the uLCD-35DT. Disconnect the on-board speaker when using this.
3
PA2
I/O/A
General Purpose I/O pin with Analog Capability. This pin is 5.0V tolerant when
used as a Digital, with a range of 0-3.3V when used as an Analog Input
4
SPK+
O
Used in conjunction with SPK-, this is used to connect an external speaker for
application that require a larger more powerful speaker than what is supplier
on-board the uLCD-35DT. Disconnect the on-board speaker when using this.
5
PA1
I/O/A
General Purpose I/O pin with Analog Capability. This pin is 5.0V tolerant when
used as a Digital, with a range of 0-3.3V when used as an Analog Input
6
PA11
I/O
General Purpose I/O. This pin is 5.0V tolerant.
7
PA0
I/O/A
General Purpose I/O pin with Analog Capability. This pin is 5.0V tolerant when
used as a Digital, with a range of 0-3.3V when used as an Analog Input
8
PA10
I/O
General Purpose I/O. This pin is 5.0V tolerant.
9
N/C
-
Not Connected
10
PA14
I
General Purpose Input Only. This pin is 5.0V tolerant.
11
GND
P
Supply Ground
12
PA15
I
General Purpose Input Only. This pin is 5.0V tolerant.
13
GND
P
Supply Ground
14
+5V
P
Main Voltage Supply +ve input pin. Reverse polarity protected. Range is 4.0V to
5.5V, nominal 5.0V. (Not connected to H2 +5V, separated with diodes)
15
N/C
-
Not Connected
16
AUDIO
I/O
PWM Audio output from Module, or Audio Input to Amplifier, determined by J1
17
N/C
-
Not Connected
18
AUDENB
I/O
External Amplifier enable pin, to control an external amplifier from the module,
or control the on board Amplifier from an external source.
19
PA9
I/O
General Purpose I/O. This pin is 5.0V tolerant.
20
RESET
I
Master Reset, Active Low (GND), See H2 Pin 9 Description
21
PA8
I/O
General Purpose I/O. This pin is 5.0V tolerant.
22
+3.3V_OUT
P
3.3V Output, limited to approximately 100mA, for external use.
23
PA7
I/O
General Purpose I/O. This pin is 5.0V tolerant.
24
RX0
I
Asynchronous serial port 0 receive pin. COM0
25
PA6
I/O
General Purpose I/O. This pin is 5.0V tolerant.
26
TX0
O
Asynchronous serial port 0 transmit pin. COM0
27
PA5
I/O
General Purpose I/O. This pin is 5.0V tolerant.
28
PA13
I/O
General Purpose I/O. This pin is 5.0V tolerant.
29
PA4
I/O
General Purpose I/O. This pin is 5.0V tolerant.
30
PA12
I/O
General Purpose I/O. This pin is 5.0V tolerant.