4d Systems 7.0" DIABLO16 Intelligent Display $LCD-70DT uLCD-70DT データシート
製品コード
uLCD-70DT
4D SYSTEMS uLCD-70DT Display Module
© 2014 4D SYSTEMS Page 9 of 23 www.4dsystems.com.au
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System Pins
4.3.
+5V IN (Module Voltage Input)
H1 Pin 14, H2 Pin 1, 5V Barrel Jack centre*:
Module supply voltage input pins. At least one of
these pins must be connected to a stable supply
voltage in the range of 4.0 Volts to 5.5 Volts DC.
Nominal operating voltage is 5.0 Volts. Note
backlight brightness will be lower for voltages
under 5.0V. 500mA of current is the minimum
recommended for module stability. It is highly
recommended to use a 1A supply for best stability
and results.
3.3V_OUT (3.3V Output)
H1 Pin 22:
3.3V Output for the user, limited to approximately
20mA. Used for powering small external devices or
components.
GND (Module Ground)
H1 Pin 11/13, H2 Pin 7, Barrel Jack sheath*:
Device ground pins. Any of these pins can be used
to GND the module, at least one must be
connected to ground.
RESET (Module Master Reset)
H1 Pin 20, H2 Pin 9:
Module Master Reset pin. An active low pulse of
greater than 2μs will reset the module. Internally
pulled up to 3.3V via a 10K resistor. Only use open
collector type circuits to reset the device if an
external reset is required.
AUDENB (Audio Enable Output)
H1 Pin 18:
Output dedicated to enable or disable and
external amplifier, where required. Active High.
AUDIO (PWM Audio Input/Output)
H1 Pin 16:
Universal Input or Output specifically for Audio.
This pin connects directly into the on-board
amplifier, but also with the filtered PWM output
from the DIABLO16 Processor. This pin can be used
to input a signal into the on-board amplifier to
play audio from an external device using the on-
board amplifier, or as a line-level output to drive
an external amplifier with DIABLO16 generated
Audio. Note that AUDENB must be enabled (high)
in DIABLO16 for any input signal to be heard.
Alternate Pin Funtions - Overview
Most of the GPIO pins have an alternate function
other than being for General Purpose I/O.
GPIO pins can be configured to be SPI, I
2
C, Serial or
a range of other functions.
Note: Not all pins however can be configured to
be any of the alternate pin functions.
be any of the alternate pin functions.
Please refer to the following tables which illustrate
which pins can be associated alternative functions.
The previous table illustrates which of the GPIO
can be used for the four different I/O Support
Functions.
Note: Once a pin is allocated to an alternate
function, another pin cannot also be allocated to
the same alternate function.
function, another pin cannot also be allocated to
the same alternate function.
Please refer to the separate document titled
'DIABLO16-4DGL-Internal-Functions.pdf' for more
information on how to set the alternate pin
configurations.
The Alternate pin functions have been broken up
into a few tables for simplification. There are
DIABLO16 Alternate Pin Configurations
I/O Support Functions
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PA0
✓
✓
PA1
✓
✓
PA2
✓
✓
PA3
✓
✓
PA4
✓
✓
✓
✓
PA5
✓
✓
✓
✓
PA6
✓
✓
✓
✓
PA7
✓
✓
✓
✓
PA8
✓
✓
✓
✓
PA9
✓
✓
✓
✓
PA10
✓
PA11
✓
PA12
✓
PA13
✓
PA14
PA15