uLCD-35DT
Datasheet
Revision 1.8
Copyright © 2023 4D Systems
Content may change at any time. Please refer to the resource centre for latest documentation.
Contents
1. Description
4
2. Features
5
3. Hardware Overview
6
4. Hardware Interface - Pins
10
4.1. Unmounted Connector
10
4.2. Serial Ports - TTL Level
10
4.3. General Purpose I/O
14
4.4. System Pins
16
4.5. Alternate Pin Function Overview
17
4.6. SPI
20
4.7. I2C
21
4.8. Pulse Out
22
4.9. PWM Out
23
4.10. Pin Counter
24
4.11. Quadrature In
25
4.12. Analog Inputs
26
5. PmmC/Firmware Programming
28
6. Module Features
30
6.1. Display - 3.5" TFT Touch Screen
30
6.2. DIABLO16 Processor
31
6.3. Audio
31
6.4. SD/SDHC Memory Cards
32
6.5. FAT16
32
7. Display Precautions
33
8. Hardware Tools
34
8.1. Programming Cable/Adaptor
34
9. Programming Language
35
10. Workshop4 IDE
36
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11. Starter Kit
37
12. Mechanical Details
38
13. Schematic Diagram
39
14. Specifications
40
15. Revision History
4D Systems
41
DATASHEET
Page 3 of 41
uLCD-35DT
Description
1. Description
The uLCD-35DT is a high-resolution 480x320 pixel 3.5" Intelligent Display Module powered by the 4D
Systems' DIABLO16 Graphics Processor.
The uLCD-35DT is designed with versatility in mind, allowing for either cable loom connection* or
direct PCB connection to a Host, enabling a wider range of customers to take advantage of this
display module.
Driving the display and peripherals is the DIABLO16 processor, a very capable and powerful chip that
enables stand-alone functionality, programmed using the 4D Systems Workshop 4 IDE Software. The
Workshop IDE enables graphic solutions to be constructed rapidly and with ease due to its design
being solely for 4D graphics processors.
The DIABLO16 Processor offers considerable FLASH and RAM upgrades over the PICASO processor,
and also provides mappable functions such as I2C, SPI, Serial, PWM, Pulse Out, and Quadrature
Input, to various GPIO, and also provide up to 4 Analog Input channels.
The display module has an array of features including PWM for Sound, Touch Detection, micro-SD
memory storage, general-purpose I/O including Analog Inputs, multiple TTL Serial, I2C and SPI
channels and multiple millisecond resolution timers, amongst many more features.
Anything that has been designed in the past to run on a PICASO Processor can theoretically run on
this DIABLO16 Module with minor changes. Please ensure you contact the 4D Systems' support
team if unsure if upgrading from a PICASO product and wanting to design with or change over to
this uLCD-35DT Module.
Note
Cable loom connection possible on special orders only, as the cable loom connectors are not populated by
default on the uLCD-35DT and only with special orders subject to a MOQ. These are not stocked and are
available on special order requests only. Please contact the 4D Systems Sales department if you require
customised modules with these headers populated.
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Page 4 of 41
uLCD-35DT
Features
2. Features
• Powerful 3.5" Intelligent LCD-TFT display module powered by DIABLO16.
• 480x320 HVGA Resolution, RGB 65K true-to-life colours, TFT Screen with integrated 4-wire
Resistive Touch Panel.
• Easy 5-pin interface to any TTL Serial Host: VCC, TX, RX, GND, RESET
• 6 banks of 32750 bytes of Flash memory for User Application Code and Data.
• 32Kb of SRAM purely for the User.
• 16 General Purpose I/O pins for user interfacing, which include 4 configurable Analog Inputs.
• The GPIO is variously configurable for alternative functions such as:
• 3x I2C channels available.
• 1x SPI dedicated for SD Card and 3x configurable SPI channels available.
• 1x dedicated and 3x configurable TTL Serial comm ports available.
• Up to 6 GPIO can be used as Pin Counters.
• Up to 6 GPIO for PWM (simple and Servo).
• Up to 10 GPIO for Pulse Output.
• Up to 14, GPIO can be configured for Quadrature Encoder Inputs (2 channels).
• On-board micro-SD memory card connector for multimedia storage and data logging purposes.
HC memory card support is also available for cards larger than 4GB.
• An alternative micro-SD memory card connector is available on special orders.
• DOS-compatible file access (FAT16 format) as well as low-level access to card memory.
• A dedicated raw PWM Audio pin is driven by WAV files from a micro-SD card.
• Display full colour images, animations, icons and video clips on chosen 4D Systems display.
• Supports all available Windows fonts.
• 4.0V to 5.5V range operation (single supply).
• Module dimensions: 56.9 x 97.6 x 15.8mm (including corner plates).
• Weighing ~ 50g.
• Display Viewing Area: 49.0 x 73.4mm
• 4x corner plates with 2.6mm holes for mechanical mounting.
• RoHS and CE Compliant.
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uLCD-35DT
Hardware Overview
3. Hardware Overview
Note
P1, P2 and uSD1 are not Populated on standard modules. On special order subject to MOQ, these can be
produced. Please contact 4D Systems Sales for more information.
H2 Pinout (Programming Header)
Pin
Symbol
I/O
Description
1
+5V
P
Main Voltage Supply +ve input pin. Reverse polarity protected. The range is 4.0V to
5.5V, nominal 5.0V.
3
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 micro LCD. 5.0V Tolerant Pin. Connected to TX0 via Resistor.
5
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 micro LCD. 5.0V Tolerant Pin. Connected to RX0 via Resistor.
7
GND
P
Supply Ground
9
RESET
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.
2,4,6,8,10
N/C
-
Pins are Reserved and must be left disconnected at all times
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uLCD-35DT
Hardware Overview
H1 Pinout (Programming Header)
Pin
Symbol
I/O
1
PA3
I/O/A
2
SPK-
O
Used in conjunction with SPK+, this is used to connect an external speaker for
applications that require a larger more powerful speaker than what is supplied
onboard the uLCD-35DT. Disconnect the onboard speaker when using this.
3
PA2
I/O/A
Used in conjunction with SPK-, this is used to connect an external speaker for
applications that require a larger more powerful speaker than what is supplied
onboard the uLCD-35DT. Disconnect the onboard speaker when using this.
4
SPK+
O
Used in conjunction with SPK-, this is used to connect an external speaker for
applications that require a larger more powerful speaker than what is supplied
onboard the uLCD-35DT. Disconnect the onboard speaker when using this.
5
PA1
I/O/A
6
PA11
I/O
7
PA0
I/O/A
8
PA10
I/O
9
N/C
-
10
PA14
I/O
11
GND
P
12
PA15
I/O
13
GND
P
Supply Ground
14
+5V
P
Main Voltage Supply +ve input pin. Reverse polarity protected. The 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
17
NC
-
18
AUDENB
I/O
External Amplifier enables the pin, to control an external amplifier from the
module, or control the onboard Amplifier from an external source.
19
PA9
I/O
General Purpose I/O. This pin is 5.0V tolerant.
20
RESET
I
21
PA8
I/O
22
+3.3V_OU
P
23
PA7
I/O
4D Systems
Description
General Purpose I/O pin with Analog Capability. This pin is 3.3V tolerant when used
as a Digital, with a range of 0-3.3V when used as an Analog Input
General Purpose I/O pin with Analog Capability. This pin is 3.3V tolerant when used
as a Digital, with a range of 0-3.3V when used as an Analog Input
General Purpose I/O. This pin is 5.0V tolerant.
General Purpose I/O pin with Analog Capability. This pin is 3.3V tolerant when used
as a Digital, with a range of 0-3.3V when used as an Analog Input.
General Purpose I/O. This pin is 5.0V tolerant.
Not Connected
General Purpose I/O. This pin is 3.3V tolerant only.
Supply Ground
General Purpose I/O. This pin is 3.3V tolerant only.
PWM Audio output from Module, or Audio Input to Amplifier, determined by J1
Not Connected
Master Reset, Active Low (GND), See H2 Pin 9 Description
General Purpose I/O. This pin is 5.0V tolerant.
3.3V Output, limited to approximately 100mA, for external use.
General Purpose I/O. This pin is 5.0V tolerant.
DATASHEET
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uLCD-35DT
Hardware Overview
Pin
Symbol
I/O
Description
24
RX0
I
25
PA6
I/O
26
TX0
O
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.
Asynchronous serial port 0 receive pin. COM0. 3.3V Levels, 5V tolerant
General Purpose I/O. This pin is 5.0V tolerant.
Asynchronous serial port 0 transmit pin. COM0. 3.3V Level Output
P1 Pinout (NOT POPULATED)
Pin
Symbol
I/O
1
+5V
P
Main Voltage Supply +ve input pin. Reverse polarity protected. The range is
4.0V to 5.5V, nominal 5.0V.
2
+3.3V_OUT
P
3.3V Output, limited to approximately 100mA, for external use.
3
GND
P
Supply Ground
4
PA12
I/O
General Purpose I/O. This pin is 5.0V tolerant.
5
PA13
I/O
General Purpose I/O. This pin is 5.0V tolerant.
6
PA14
I/O
General Purpose I/O. This pin is 3.3V tolerant only.
7
PA15
I/O
General Purpose I/O. This pin is 3.3V tolerant only.
8
AUDIO
I/O
PWM Audio output from Module, or Audio Input to Amplifier, determined
by J1
9
AUDENB
I/O
External Amplifier enables the pin, to control an external amplifier from the
module, or control the onboard Amplifier from an external source.
10
RESET
--
Master Reset, Active Low (GND), See P1 Pin 5 Description
11
RX0
--
Asynchronous serial port 0 receive pin. COM0. 3.3V Levels, 5V tolerant
12
--
--
Asynchronous serial port 0 transmit pin. COM0. 3.3V Level Output
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Description
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uLCD-35DT
Hardware Overview
P2 Pinout (NOT POPULATED)
Pin
Symbol
I/O
Description
1
PA0
I/O/A
General Purpose I/O pin with Analog Capability. This pin is 3.3V tolerant
when used as a Digital, with a range of 0-3.3V when used as an Analog Input
2
PA1
I/O/A
General Purpose I/O pin with Analog Capability. This pin is 3.3V tolerant
when used as a Digital, with a range of 0-3.3V when used as an Analog Input
3
PA2
I/O/A
General Purpose I/O pin with Analog Capability. This pin is 3.3V tolerant
when used as a Digital, with a range of 0-3.3V when used as an Analog Input
4
PA3
I/O/A
General Purpose I/O pin with Analog Capability. This pin is 3.3V tolerant
when used as a Digital, with a range of 0-3.3V when used as an Analog Input
5
PA4
I/O
General Purpose I/O. This pin is 5.0V tolerant.
6
PA5
I/O
General Purpose I/O. This pin is 5.0V tolerant.
7
PA6
I/O
General Purpose I/O. This pin is 5.0V tolerant.
8
PA7
I/O
General Purpose I/O. This pin is 5.0V tolerant.
9
PA8
I/O
General Purpose I/O. This pin is 5.0V tolerant.
10
PA9
I/O
General Purpose I/O. This pin is 5.0V tolerant.
11
PA10
I/O
General Purpose I/O. This pin is 5.0V tolerant.
12
PA11
I/O
General Purpose I/O. This pin is 5.0V tolerant.
Note
I = Input, O = Output, P = Power, A = Analog Input
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uLCD-35DT
Hardware Interface - Pins
4. Hardware Interface - Pins
This section describes in detail the hardware interface pins of the device.
4.1. Unmounted Connector
Header P1 and P2 (which are not mounted by default) are a 12-way (1x12) 1.25mm pitch wire-to-board
housing, part number 125C-SR-12T from JAWS, enabling a wiring loom to be attached for remote
mount applications. Mating connectors for P1 and P2 are 125C-12P for the housing and 125C-T for the
terminals.
uSD connector uSD1 (which is not mounted by default) is a Molex 47309-2651 micro-SD Push-Pull
card connector. This shares the same bus as uSD2 and therefore only one is mounted on the board
at once.
Please contact the 4D Systems Sales team if these parts are desirable for your given applications.
Please note that a minimum order quantity may be required, and these are not stocked in this
configuration.
4.2. Serial Ports - TTL Level
The DIABLO16 Processor has three hardware asynchronous serial ports (COM1 - COM3) that can be
configured on a variety of the processor GPIO pins. TX/RX0 (COM0) is dedicated and its pins are fixed.
All of the DIABLO16's serial ports can be used to communicate with external serial devices.
TX/RX0 is referred to as COM0 and is the only one used for programming the DIABLO16 itself.
The primary features are:
• Full-Duplex 8-bit data transmission and reception.
• Data format: 8 bits, No Parity, 1 Stop bit.
• Independent Baud rates from 300 baud up to 600K baud.
• Single byte transmits and receives a fully buffered service. The buffered service feature runs in
the background capturing and buffering serial data without the user application having to
constantly poll any of the serial ports. This frees up the application to service other tasks.
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uLCD-35DT
Serial Ports - TTL Level
A single-byte serial transmission consists of the start bit, 8 bits of data followed by the stop bit. The
start bit is always 0, while a stop bit is always 1. The LSB (Least Significant Bit, Bit 0) is sent out first
following the start bit. The figure below shows a single-byte transmission timing diagram.
COM0 is also the primary interface for 4DGL user program downloads and chip configuration PmmC
programming. Once the compiled 4DGL application program (EVE byte-code) is downloaded and
the user code starts executing, the serial port is then available to the user application. Refer to the
PmmC/Firmware programming section for more details.
TX0 pin (Serial Transmit COM0):
Dedicated Asynchronous Serial port COM0 transmit pin, TX0. Connect this pin to the
external serial device receive (Rx) signal. This pin is 5.0V tolerant.
RX0 pin (Serial Receive COM0):
Dedicated Asynchronous Serial port COM0 receive pin, RX0. Connect this pin to an external
serial device transmit (Tx) signal. This pin is 5.0V tolerant.
TX1 pin (Serial Transmit COM1):
Asynchronous Serial port COM1 transmit pin, TX1. Connect this pin to external serial device
receive (Rx) signal. This can be configured to one of the GPIO pins, see the table below.
RX1 pin (Serial Receive COM1):
Asynchronous Serial port COM1 receive pin, RX1. Connect this pin to an external serial
device transmit (Tx) signal. This can be configured to one of the GPIO pins, see the table
below.
TX2 pin (Serial Transmit COM2):
Asynchronous Serial port COM2 transmit pin, TX2. Connect this pin to the external serial
device receive (Rx) signal. This can be configured to one of the GPIO pins, see the table
below.
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uLCD-35DT
Serial Ports - TTL Level
RX2 pin (Serial Receive COM2):
Asynchronous Serial port COM2 receive pin, RX2. Connect this pin to an external serial
device transmit (Tx) signal. This can be configured to one of the GPIO pins, see the table
below.
TX3 pin (Serial Transmit COM3):
Asynchronous Serial port COM3 transmit pin, TX3. Connect this pin to the external serial
device receive (Rx) signal. This can be configured to one of the GPIO pins, see the table
below.
RX3 pin (Serial Receive COM3):
Asynchronous Serial port COM3 receive pin, RX3. Connect this pin to an external serial
device transmit (Tx) signal. This can be configured to one of the GPIO pins, see the table
below.
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uLCD-35DT
Serial Ports - TTL Level
DIABLO16 Serial TTL Comm Port Configuration Options
TX1
PA0
PA1
RX1
TX2
Yes
Yes
PA2
Yes
RX2
TX3
Yes
Yes
Yes
Yes
RX3
Yes
Yes
Yes
Yes
Yes
PA3
Yes
Yes
Yes
Yes
Yes
Yes
PA4
Yes
Yes
Yes
Yes
Yes
Yes
PA5
Yes
Yes
Yes
Yes
Yes
Yes
PA6
Yes
Yes
Yes
Yes
Yes
Yes
PA7
Yes
Yes
Yes
Yes
Yes
Yes
PA8
Yes
Yes
Yes
Yes
Yes
Yes
PA9
Yes
Yes
Yes
Yes
Yes
Yes
PA10
Yes
Yes
Yes
PA11
Yes
Yes
Yes
PA12
Yes
Yes
Yes
Yes
Yes
Yes
PA13
Yes
Yes
Yes
Yes
Yes
Yes
PA14
PA15
As per the table, not all GPIO can be configured to be every serial port, or RX/TX.
Note
Pins PA4-PA13 are 5.0V tolerant, while pins PA0-PA3, PA14, PA15 are 3.3V tolerant only. All pins output at 3.3V
levels.
Please refer to the Diablo16 Internal Functions Manual for information on how to set the DIABLO16
pin mappings.
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uLCD-35DT
General Purpose I/O
4.3. General Purpose I/O
There are 16 general purpose Input/Output (GPIO) pins available to the user. These provide flexibility
for individual bit operations along with serving collectively for byte-wise operations using the BUS
functions
DIABLO16 Alternate Pin Configurations General Purpose I/O
Digital Input
Digital Output
Bus Read
Bus Write
Analog Read
PA0
Yes
Yes
Yes
Yes
Yes
PA1
Yes
Yes
Yes
Yes
Yes
PA2
Yes
Yes
Yes
Yes
Yes
PA3
Yes
Yes
Yes
Yes
Yes
PA4
Yes
Yes
Yes
Yes
PA5
Yes
Yes
Yes
Yes
PA6
Yes
Yes
Yes
Yes
PA7
Yes
Yes
Yes
Yes
PA8
Yes
Yes
Yes
Yes
PA9
Yes
Yes
Yes
Yes
PA10
Yes
Yes
Yes
Yes
PA11
Yes
Yes
Yes
Yes
PA12
Yes
Yes
Yes
Yes
PA13
Yes
Yes
Yes
Yes
PA14
Yes
Yes
Yes
PA15
Yes
Yes
Yes
Please refer to the Diablo16 Internal Functions Manual for information on how to set the DIABLO16
pin mappings.
PA0-PA3:
General purpose I/O pins, or can serve as Analog Input pins. Each pin can be individually set
for INPUT or OUTPUT or ANALOG. Power-Up Reset default is all INPUTS. When set as
Digital Inputs, the pins are 3.3V tolerant. Digital GPIO can source/sink 10mA. For more
information see the Specifications section.
When set as Analog Inputs, the pins have a 0 to 3.3V range and have 12 bit resolution. For
more information, see the Analog Inputs section.
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uLCD-35DT
General Purpose I/O
PA4-PA13:
General purpose I/O pins. Each pin can be individually set for INPUT or OUTPUT. Power-Up
Reset default is all INPUTS. When set as Digital Inputs, the pins are 5V tolerant. Digital GPIO
can source/sink 10mA. For more information see the Specifications section.
PA14-PA15:
Same as PA4-PA13 however these pins are 3.3V tolerant only.
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uLCD-35DT
System Pins
4.4. System Pins
+5V (Module Voltage Input):
H1 Pin 14, H2 Pin 1, P1 Pin 1:
Module supply voltage input pin. One of these pins must be connected to a stable supply voltage in
the range of 4.0 Volts to 5.5 Volts DC. The nominal operating voltage is 5.0 Volts. Note that backlight
brightness will be lower for voltages under 5.0V.
3.3V_OUT (3.3V Output):
H1 Pin 22, P1 Pin 2:
3.3V Output for the user limited to approximately 100mA. Used for powering small external
devices or components.
GND (Module Ground):
H1 Pins 11 & 13, H2 Pin 7, P1 Pin 3:
Device ground pins. At least one of these pins must be connected to the ground.
RESET (Module Master Reset):
H1 Pin 20, H2 Pin 9, P1 Pin 10:
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):
H1 Pin 18, P1 Pin 9:
Pin used to enable/disable the onboard amplifier, or to control an external amplifier. The
pin can be controlled from the Diablo16 or driven directly. Active Low to power the onboard
amplifier.
AUDIO (Audio Input/Output):
H1 Pin 16, P1 Pin 8:
This pin outputs Audio from the DIABLO16 Processor to either the onboard amplifier or to
an external amplifier or can be used to receive external audio to be played on the onboard
amplifier. Use Jumper J1 to control its use. Used in conjunction with the AUDENB signal
automatically by the Diablo Processor. Refer to the Schematic diagram to see the 3 viable
positions of the J1 Jumper.
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uLCD-35DT
Alternate Pin Function Overview
4.5. Alternate Pin Function 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, I2C, Serial or a range of other functions.
Note
Not all pins can be configured to be any of the alternate pin functions.
Refer to the tables below that illustrate the GPIO pins you can associate with alternative functions.
DIABLO16 Alternate Pin Configurations I/O Support Functions
Pulse Out
PWM Out
Pin Counter
Quadrature In
PA0
Yes
Yes
PA1
Yes
Yes
PA2
Yes
Yes
PA3
Yes
Yes
PA4
Yes
Yes
Yes
Yes
PA5
Yes
Yes
Yes
Yes
PA6
Yes
Yes
Yes
Yes
PA7
Yes
Yes
Yes
Yes
PA8
Yes
Yes
Yes
Yes
PA9
Yes
Yes
Yes
Yes
PA10
Yes
PA11
Yes
PA12
Yes
PA13
Yes
PA14
PA15
Note
• Once a pin is allocated to an alternate function, another pin cannot also be allocated to the same
alternate function.
• Quadrature In requires 2 Pins
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uLCD-35DT
Alternate Pin Function Overview
Please refer to the Diablo16 Internal Functions Manual 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
communication-based functions and I/O support-based functions.
Further information is available in the next sections for each of the alternative pin functions.
The following table illustrates which GPIO can be used for the three different SPI channels available.
DIABLO16 Alternate Pin Configurations SPI Communications
SPI1
SDO
PA0
PA1
SPI1
SDI
SPI1
SCK
SPI2
SDO
Yes
Yes
PA2
Yes
SPI2
SDI
SPI2
SCK
SPI3
SDO
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
PA4
Yes
Yes
Yes
PA5
Yes
Yes
PA6
Yes
PA7
Yes
SPI3
SCK
Yes
Yes
Yes
Yes
PA3
SPI3
SDI
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
PA8
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
PA9
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
PA10
Yes
Yes
Yes
PA11
Yes
Yes
Yes
PA12
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
PA13
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
PA14
PA15
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uLCD-35DT
Alternate Pin Function Overview
The table below illustrates the GPIO pins you can use for the three different I 2C channels available.
DIABLO16 Alternate Pin Configurations I2C Communication
I 2C1 SDA
I 2C1 SCL
I 2C2 SDA
I 2C2 SCL
I 2C3 SDA
I 2C3 SCL
PA0
Yes
Yes
Yes
Yes
Yes
Yes
PA1
Yes
Yes
Yes
Yes
Yes
Yes
PA2
Yes
Yes
Yes
Yes
Yes
Yes
PA3
Yes
Yes
Yes
Yes
Yes
Yes
PA4
Yes
Yes
Yes
Yes
Yes
Yes
PA5
Yes
Yes
Yes
Yes
Yes
Yes
PA6
Yes
Yes
Yes
Yes
Yes
Yes
PA7
Yes
Yes
Yes
Yes
Yes
Yes
PA8
Yes
Yes
Yes
Yes
Yes
Yes
PA9
Yes
Yes
Yes
Yes
Yes
Yes
PA10
Yes
Yes
Yes
Yes
Yes
Yes
PA11
Yes
Yes
Yes
Yes
Yes
Yes
PA12
Yes
Yes
Yes
Yes
Yes
Yes
PA13
Yes
Yes
Yes
Yes
Yes
Yes
PA14
PA15
SPECIAL
SPECIAL
SPECIAL
SPECIAL
SPECIAL
SPECIAL
Note
SPECIAL - please see I2C section.
4D Systems
DATASHEET
Page 19 of 41
uLCD-35DT
SPI
4.6. SPI
There are 3 user-configurable SPI channels available for mapping to GPIO, for use by the user for the
target application. All 3 SPI channels are Master only, and cannot be configured to be slaves at this
time.
The SPI Bus speed is configurable using the SPIx_Init() Function in 4DGL, and allows various speeds
from 78.125Khz to 17.5Mhz.
Please refer to the table for details on which GPIO can be configured for SPI.
Note
The additional SPI channel (SPI0) is dedicated to memory cards and cannot be reconfigured for alternate
uses.
To map an SPI channel to a set of GPIO pins, the following 4DGL functions are used:
• SPIx_SCK_pin(pin); // Map the SCK pin
• SPIx_SDI_pin(pin); // Map the SDI pin
• SPIx_SDO_pin(pin); // Map the SDO pin
where:
'SPIx' is substituted with SPI1, SPI2 or SPI3 accordingly, and
'pin' is the target GPIO pin compatible with that particular pin function.
Chip Select for use with SPI can be any other unused GPIO pin, configured as a Digital Output. The
lowering and raising of the selected CS (GPIO) pin is done manually by the user in the 4DGL
application.
Please refer to the Diablo16 Internal Functions Manual for more information on how to use the SPI
functions, along with the Diablo16 Processor Datasheet.
4D Systems
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uLCD-35DT
I2C
4.7. I2C
There are 3 user-configurable I2C channels available for mapping to GPIO, for use by the user for the
target application. All 3 I2C channels are Master only, and cannot be configured to be slaves at this
time.
Please refer to the table for details on which GPIO can be configured for I 2C.
To map an I 2C Channel to a set of GPIO pins, the following 4DGL function is used:
• I2Cx_Open(Speed, SCLpin, SDApin);
where:
'I2Cx' is substituted with I2C1, I2C2 or I2C3 accordingly,
'Speed' is the desired I2C Bus speed, and
'SCLpin' and 'SDApin' are the target GPIO pins compatible with that particular pin function.
Note
The normal I 2C pins are PA0 to PA13, however, the use of these pins has a few limitations.
1. There is no slew rate control at I2C_MED.
2. I2C_FAST is not truly 1MHz.
If either of these restrictions needs to be addressed, a special case of SCLpin = PA14 and SDApin = PA15 exists
ONLY for speeds I2C_MED (which uses slew rate control) and I2C_FAST (which is truly 1MHz)
Please refer to the Diablo16 Internal Functions Manual for more information on how to use the I 2C
functions, along with the Diablo16 Processor Datasheet.
4D Systems
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Page 21 of 41
uLCD-35DT
Pulse Out
4.8. Pulse Out
Pulse Out is used to create a single pulse of set duration on the selected pin of choice, which is
inverted in polarity to the current state of the pin.
This 'inversion of polarity' means if a Pin is currently held HI, and Pulse Out is executed on that Pin,
the pin will pulse LO and then return to HI. Same with vice versa, if currently LO and Pulse Out are
executed on that Pin, it will pulse HI and then return to LO.
This is available in both blocking and non-blocking versions.
Please refer to the table for details on which GPIO can be configured to Pulse Out.
Note
Each Pulse Out request needs at least a 1ms lead time due to the scheduling of the event with the internal
1ms timer.
To enable the Pulse Out function on a GPIO pin, the following 4DGL functions are used:
• pin_Pulseout(pin, value); //Non-Blocking
• pin_PulseoutB(pin, value); //Blocking
where:
'pin' is the target GPIO pin compatible with that particular pin function, and
'value' is the length of the pulse in milliseconds.
Please refer to the Diablo16 Internal Functions Manual for more information on how to use the Pulse
Out functions, along with the Diablo16 Processor Datasheet.
4D Systems
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uLCD-35DT
PWM Out
4.9. PWM Out
There are 6 PWM channels available to be configured by the user, with 4-time bases available for
selection. The PWM can be configured to be used in Servo Mode, or Simple Mode.
Please refer to the table for details on which GPIO can be configured to PWM.
Servo Mode allows a millisecond input value with 0.01ms resolution, which runs at a frequency of
approximately 50Hz or 50pps (20ms). The position of the servo is determined by the width of the
pulse. Generally, 1.5ms is 90 degrees, 1ms is 0 degrees and 2ms is 180 degrees. Servos however vary,
and the DIABLO16 PWM control can be adjusted to suit most applications.
Simple Mode allows a percentage input value with a resolution of 0.1%, which runs at a frequency of
approximately 70KHz.
To enable the PWM output on a GPIO pin, the following 4DGL function is used:
• PWM_Init(pin, mode, value);
where:
'pin' is the GPIO compatible with the particular pin function,
'mode' is the type of PWM to generate, and
'value' is the parameter that defined the PWM pulse itself.
Please refer to the Diablo16 Internal Functions Manual for more information on how to use the PWM
functions, along with the Diablo16 Processor Datasheet.
4D Systems
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uLCD-35DT
Pin Counter
4.10. Pin Counter
There are 6 Pin Counter channels available to be configured by the user, used to count incoming
pulses with the ability to call a user function on overflow. The Pin Counter function is available for use
in a variety of modes.
The counters can be read and written at any time.
Please refer to the table for details on which GPIO can be configured to the Pin Counter.
To enable the Pin Counter function on a GPIO pin, the following 4DGL function is used:
• pin_Counter(pin, mode, OVFfunction);
where:
'pin' is the GPIO pin compatible with this particular function,
'mode' is the type of trigger used to count on such as Rising/Falling/Edge, and
'OVFfunction' is the user function to call when the counter overflows if desired.
Please refer to the Diablo16 Internal Functions Manual for more information on how to use the Pin
Counter functions, along with the Diablo16 Processor Datasheet.
4D Systems
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uLCD-35DT
Quadrature In
4.11. Quadrature In
There are two Quadrature Input channels available on the DIABLO16 processor, which requires 2
GPIO pins each.
Please refer to the table for details on which GPIO can be configured for Quadrature Input.
Quadrature Input allows a quadrature encoder to be connected, and the position counter and delta
counter can be read at any time.
To enable the Quadrature Input function on a set of GPIO pins (2 pins required), the following 4DGL
function is used:
• Qencoderx(PHApin, PHBpin, mode);
where:
'Qencoderx' is substituted for Quencoder1 or Quencoder2 accordingly,
'PHApin' is the pin connected to the A Phase of the Encoder,
'PHBpin' is the pin connected to the B Phase of the Encoder, and
'mode' is not currently used so is to be set to zero (0).
Please refer to the Diablo16 Internal Functions Manual for more information on how to use the
Quadrature Input functions, along with the Diablo16 Processor Datasheet.
4D Systems
DATASHEET
Page 25 of 41
uLCD-35DT
Analog Inputs
4.12. Analog Inputs
Please refer to the table under the General Purpose I/O section for details about pins you can
configure to analog inputs.
The analog inputs on the DIABLO16 have a range of 0V to 3.3V, each with a max resolution of 12 bits.
You can read the analog inputs using either the standard mode, averaged mode or high-speed
mode.
• Standard Mode results are immediately read in a sample. Standard Mode can read over 40000
values per second. Operates at 12-bit.
• Averaged Mode results are immediately read in 16 samples and their average is returned.
Averaged Mode can read ~20000 values per second. Operates at 12-bit.
• Highspeed Mode collects a user-specified number of samples at a user-specified rate/frequency
and can execute a user function when complete. The updated value updates ~250000 times
across 1-4 channels. Operates at 10-bit.
Note
The various analog modes can interfere with the operation of the touch screen if their functions are called too
frequently. It is recommended to limit the calls of the analog functions to a maximum of once every
millisecond. Please refer to the Diablo16 Internal Functions Manual for further information on this topic.
To enable a GPIO as an Analog Input for Standard or Averaged modes, you must use the following
4DGL function to set the pin:
• pin_Set(mode, pin);
where:
'mode' is the desired mode defined above, either Standard or Averaged, and
'pin' is the GPIO compatible with this function which is to become an Analog Input.
For highspeed mode, you must the following 4DGL function to set the pin and define the
parameters:
• ana_HS(rate, samples, 1buf, 2buf, 3buf, 4buf, func);
where:
'rate' is the number of samples per second,
'samples' is the number of samples to collect per channel,
'1buf' to '4buf' are the buffer addresses for the 4 channels, and
'func' is the user function to call when the number of samples specified has been collected.
4D Systems
DATASHEET
Page 26 of 41
uLCD-35DT
Analog Inputs
Please refer to the Diablo16 Internal Functions Manual for more information on how to use the
Analog Input functions, along with the Diablo16 Processor Datasheet.
Note
Analog Inputs are 0-3.3V tolerant only. Do not apply voltages outside of this range as you will damage
Diablo16.
4D Systems
DATASHEET
Page 27 of 41
uLCD-35DT
PmmC/Firmware Programming
5. PmmC/Firmware Programming
The DIABLO16 processor is a custom graphics processor. All functionality including the high-level
commands is built into the chip. This chip level configuration is available as a PmmC (Personalitymodule-micro-Code) file, which can be likened to traditional Firmware. There is also a Display Driver
file, which separates specific display settings from the PmmC, unlike on the PICASO processor where
everything is combined.
A PmmC file contains all of the low level micro-code information (analogy of that of a soft silicon)
which defines the characteristics and functionality of the device. The ability to program the device
with a PmmC file provides an extremely flexible method of customising as well as upgrading it with
future enhancements.
The Display Driver contains the initialisation and parameters associated with the particular display
that is to be connected to the DIABLO16 processor.
The PmmC file and Display Driver file can only be programmed into the device via the COM0 serial
port with the aid of Workshop 4, the 4D Systems IDE software.
Using a non-4D programming interface could damage your module, and void your Warranty.
PmmC Loader is a GUI interface designed to download PmmC's and Drivers to 4D Systems
Processors. It can automatically update existing PmmC's and Drivers present on a module, or
manually change or force download to a blank processor or module, overwriting anything written in
previously.
4D Systems
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uLCD-35DT
PmmC/Firmware Programming
Program Loader is a GUI interface designed to download Applications to either Flash or RAM, useful
for testing or production loading, without the need for Workshop4 itself.
Please contact our Support Team for more information on what we can provide. Some solutions also
exist for external processor-based loading, if there is a requirement for that. This solution is available
under NDA.
Using a non-4D programming interface could damage your module, and void your Warranty.
4D Systems
DATASHEET
Page 29 of 41
uLCD-35DT
Module Features
6. Module Features
The uLCD-35DT module is designed to accommodate most applications. Some of the main features
of the module are listed below.
6.1. Display - 3.5" TFT Touch Screen
The uLCD-35DT module is equipped with a 3.5" TFT display. Details of the display are listed below:
• Screen Size: 3.5" diagonal, 320x480 resolution, 65K colours
• Integrated 4-Wire Resistive Touch Screen
• Screen Dimensions: 54.5 x 83.0 x 3.35mm
• Viewing Area: 49.76 x 77.04mm
• Pixel Pitch: 0.153(H) x 0.153(V)mm
• Brightness: 220cd/m2
• Contrast Ratio: 500:1
• Viewing Angle Above Centre: 60 degrees
• Viewing Angle Below Centre: 60 degrees
• Viewing Angle Left of Centre: 70 degrees
• Viewing Angle Right of Centre: 70 degrees
• Viewing Direction: 6 O'clock
• 7 LEDs for Backlighting
Note
The Displays used are the highest-rated 'Grade A' Displays, which allow for 0-4 defective pixels. A defective
pixel could be solid Black (Dead), White, Red, Green or Blue.
4D Systems
DATASHEET
Page 30 of 41
uLCD-35DT
DIABLO16 Processor
6.2. DIABLO16 Processor
The DIABLO16 is a smart Controller and the interface to the TFT-LCD is almost plug-n-play.
All of the data and control signals are provided by the chip to interface directly with the display.
Powerful graphics, text, images, animation and countless more features are built right inside the
chip. You can refer to the DIABLO16 graphics processor datasheet for more information.
6.3. Audio
Audio playback support in the DIABLO16 Processor enables this module to play audio WAV files
stored in the micro-SD memory card. Filtered PWM audio is generated and made available on the
AUDIO pin of the 30-way ZIF connector, ready to interface with an audio amplifier on your
application board.
A simple instruction enables the user to play/pause/stop audio files while continuing the execution of
the user application code, such as display updates, touch recognition, communications, etc. The
audio system also allows real-time pitch change of audio samples.
For a complete list of audio commands please refer to the separate document titled:
• DIABLO16 4DGL Internal Functions
4D Systems
DATASHEET
Page 31 of 41
uLCD-35DT
SD/SDHC Memory Cards
6.4. SD/SDHC Memory Cards
The module supports micro-SD memory cards via the onboard latch-type micro-SD connector. The
memory card is used for all multimedia file retrieval such as images, animations and movie clips. The
memory card can also be used as general-purpose storage for data logging applications. Support is
available for off-the-shelf micro-SD (< 4GB) and high-capacity HC memory cards (4GB and above).
Memory cards up to 32GB in size can be used, however, it must be noted that only a portion of this
can be used by the FAT16 file system. See the section below for more details about FAT16.
Note
A microSD card capable of SPI is a requirement for all 4D Systems' display modules powered by Goldelox,
Picaso or Diablo16 Processors. If a non-SPI compatible card is used, it will simply fail to mount, or may cause
intermittent issues resulting in lockups and crashing of the application. Please refer to the 4D Systems
website for microSD cards offered by 4D Systems.
6.5. FAT16
The uLCD-35DT Module uses off-the-shelf standard SDHC/SD/micro-SD memory cards with up to
2GB capacity usable with FAT16 formatting. For any FAT file-related operations, before the memory
card can be used it must first be formatted with the FAT16 option. The formatting of the card can be
done on any PC system with a card reader. Select the appropriate drive and choose the FAT16 (or just
FAT in some systems) option when formatting. The card is now ready to be used in the DIABLO16based application.
The DIABLO16 Processor also supports high-capacity HC memory cards (4GB and above). The
available capacity of SD-HC cards varies according to the way the card is partitioned and the
commands used to access it.
The FAT partition is always first (if it exists) and can be up to the maximum size permitted by FAT16.
Windows 7 will format FAT16 up to 4GB. Windows XP will format FAT16 up to 2GB and the Windows
XP command prompt will format FAT16 up to 4GB.
4D Systems
DATASHEET
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uLCD-35DT
Display Precautions
7. Display Precautions
• Avoid having to display the same image/object on the screen for lengthy periods. This will cause
a burn-in which is a common problem with all types of display technologies. Blank the screen
after a while or dim it very low by adjusting the contrast. Better still; implement a screen saver
feature.
• Moisture and water can damage the display. Moisture on the surface of a powered display will
cause the electrodes to corrode. Wipe off any moisture gently or let the display dry before usage.
• Dirt from fingerprint oil and fat can easily stain the surface of the display. Gently wipe off any
stains with a soft lint-free cloth.
• The performance of the display will degrade under high temperatures and humidity. Avoid such
conditions when storing.
• Do not tamper with the display flex cable that is connected to the control board. This may affect
the connection between the display and the driving circuitry and cause failure.
• Displays are susceptible to mechanical shock and any force exerted on the module may result in
deformed zebra stripes, a cracked display cell and a broken backlight
• Always use the mounting holes on the module's corner plates to mount the display.
4D Systems
DATASHEET
Page 33 of 41
uLCD-35DT
Hardware Tools
8. Hardware Tools
The following hardware tools are required for full control of the gen4 Integrated Display Modules.
8.1. Programming Cable/Adaptor
The 4D Programming Cable and uUSB-PA5/uUSB-PA5-II Programming Adaptors are essential
hardware tools to program, customise and test the DIABLO16 Processor.
Either the 4D Programming Cable or the uUSB-PA5 Programming Adaptor can be used.
The 4D programming interfaces are used to program a new Firmware/PmmC, Display Driver and for
downloading compiled 4DGL code into the processor. They even serve as an interface for
communicating serial data to the PC.
The 4D Programming Cable and uUSB-PA5 Programming Adaptor are available from 4D Systems
website.
4D Programming Cable
uUSB-PA5/uUSB-PA5-II Programming Adaptor
Note
In addition to these modules, the gen4-PA and uUSB-PA5/uUSB PA5-II can also be used.
Using a non-4D programming interface could damage your processor, and void your Warranty.
These programming interfaces are available from the 4D Systems website.
4D Systems
DATASHEET
Page 34 of 41
uLCD-35DT
Programming Language
9. Programming Language
The uLCD-35DT Module uses the DIABLO16 processor, which belongs to a family of processors
powered by a highly optimised softcore virtual engine, EVE (Extensible Virtual Engine).
EVE is a proprietary, high-performance virtual machine with an extensive byte-code instruction set
optimised to execute compiled 4DGL programs. 4DGL (4D Graphics Language) was specifically
developed from ground up for the EVE engine core. It is a high-level language which is easy to learn
and simple to understand yet powerful enough to tackle many embedded graphics applications.
4DGL is a graphics-oriented language allowing rapid application development, and the syntax
structure was designed using elements of popular languages such as C, Basic, Pascal and others.
Programmers familiar with these languages will feel right at home with 4DGL. It includes many
familiar instructions such as IF..ELSE..ENDIF, WHILE..WEND, REPEAT..UNTIL, GOSUB..ENDSUB, GOTO,
PRINT as well as some specialised instructions SERIN, SEROUT, GFX_LINE, GFX_CIRCLE and many more.
For detailed information about the 4DGL language, please refer to the following documents:
• 4DGL Programmers Reference Manual
• Diablo16 Internal Functions Manual
To assist with the development of 4DGL applications, the Workshop4 IDE combines a full-featured
editor, a compiler, a linker and a downloader into a single PC-based application. It's all you need to
code, test and run your applications.
4DGL is available to be written in two of the four environments offered by the Workshop4 IDE,
Designer and ViSi. The other two environments, Serial and ViSi-Genie do not directly use 4DGL by the
User (Except in Workshop4 Pro, for ViSi-Genie), however, it is present in the background. Serial is an
application that runs, and that is written in 4DGL. ViSi-Genie automatically generates 4DGL itself
based on what is configured in the GUI. More information about each follows.
4D Systems
DATASHEET
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uLCD-35DT
Workshop4 IDE
10. Workshop4 IDE
Workshop 4 is a comprehensive software IDE that provides an integrated software development
platform for all of the 4D family of processors and modules. The IDE combines the Editor, Compiler,
Linker and Downloader to develop complete 4DGL application code. All user application code is
developed within the Workshop 4 IDE.
The Workshop4 IDE supports multiple development environments for the user, to cater to different
user requirements and skill levels.
• The Designer environment enables the user to write 4DGL code in its natural form to program
the range of 4D System's intelligent displays. - A visual programming experience, suitably called
ViSi, enables drag-and-drop type placement of objects to assist with 4DGL code generation and
allows the user to visualise how the display will look while being developed.
• An advanced environment called ViSi-Genie doesn't require any 4DGL coding at all, it is all done
automatically for you. Simply lay the display out with the objects you want, set the events to drive
them and the code is written for you automatically. This can be extended with additional features
when a Workshop4 PRO license is purchased from the 4D Systems website. Extended Advanced
features for Visi-Genie are available in the PRO version of WS4. Further details are explained in
the Visi Genie section of the Workshop4 documentation.
• A Serial environment is also provided to transform the display module into a slave serial module,
allowing the user to control the display from any host microcontroller or device with a serial port.
For more information regarding these environments, refer to the Workshop4 manuals.
The Workshop 4 IDE is available from the 4D Systems website.
4D Systems
DATASHEET
Page 36 of 41
uLCD-35DT
Starter Kit
11. Starter Kit
4D Systems highly recommends all first-time buyers of 4D Systems' displays, to purchase the Starter
Kit when purchasing their first 4D Systems display solution.
The Starter Kit provides all the hardware that is required to get the user up and running.
Not all development environments and features will be needed by every user, however, purchasing
the display solution in a Starter Kit, ensures that if you want to take full advantage of the 4D Systems
display solution and try out each of the 4D Workshop4 environments, upgrade PmmC/firmware, you
can.
The Designer environment can use every feature of the display, however depending on the user
requirements, a micro-SD (uSD) card may not be required. The uSD card is used when displaying
images/video/sound, along with data logging to uSD, and a programming cable is required for
downloading compiled code and PmmC/Firmware updates.
The ViSi environment is the same as Designer in terms of feature utilisation, but is image based so
requires a uSD card, along with a programming cable.
The ViSi-Genie environment is also image-based, and therefore requires a uSD card and
programming cable also.
The Serial environment does not require either a uSD or Programming cable to be used, however,
can use both depending on the user's requirements. The uSD card can be used for such things as
storage of multimedia files and data logging, and the Programming cable for PmmC/Firmware
updates, or changing to one of the other three programming environments.
The Starter Kit includes:
• uLCD-35DT Display Module
• 4GB MicroSD Card
• uUSB-PA5-II Programming Adaptor
• 150mm 5-way Female-Female jumper cable, for quick connection to another device or
breadboard
• 5-way Male-Male adaptor (for converting the Female-Female cable to be Male-Female)
Simply select the Starter Kit option when purchasing the chosen display module on the 4D Systems
shopping cart, or from your local distributor.
4D Systems
DATASHEET
Page 37 of 41
uLCD-35DT
Mechanical Details
12. Mechanical Details
4D Systems
DATASHEET
Page 38 of 41
uLCD-35DT
Schematic Diagram
13. Schematic Diagram
4D Systems
DATASHEET
Page 39 of 41
uLCD-35DT
Specifications
14. Specifications
Absolute Maximum Ratings
Operating ambient temperature
-20°C to +70°C
Storage temperature
-30°C to +80°C
Voltage on any digital input pin with respect to GND
-0.3V to 6.0V
Voltage on VCC with respect to GND
-0.3V to 6.0V
Maximum current sunk/sourced by any pin
10.0mA
Maximum current sunk/sourced by all ports
200.0mA
Note
Stresses above those listed here may cause permanent damage to the device. This is a stress rating only and
functional operation of the device at those or any other conditions above those indicated in the
recommended operation listings of this specification is not implied. Exposure to maximum rating conditions
for extended periods may affect device reliability.
Recommended Operating Conditions
Parameter
Conditions
Min
Typ
Max
Units
Supply Voltage
(VCC)
Stable external supply
required
4.0
5.0
5.5
V
--
3.3
--
V
-10
--
+60
°C
0
--
0.2VP
V
Processor voltage
(VP)
Operating
Temperature
Input Low Voltage
(VIL)
all pins
Input High Voltage
(VIH)
non 5V tolerant pins
0.8VP
--
3.3
V
Input High Voltage
(VIH)
5V Tolerant Pins, RX pin
0.8VP
--
3.3
V
Input High Voltage
(VIH)
PA4-PA13, RX0 and TX0
pins
0.8VP
--
5.5
V
Reset Pulse
External Open Collector
2.0
--
--
µs
Operational Delay
Power-Up or External
Reset
500
--
3000
ms
4D Systems
DATASHEET
Page 40 of 41
uLCD-35DT
Revision History
Global Characteristics Based on Operating Conditions
Parameter
Conditions
Min
Typ
Max
Units
Supply Current
(ICC)
3.3V, heavily depends on screen usage
conditions, sleep mode, audio, SD card
--
250
--
mA
Output Low
Voltage (VOL)
3.3V, IOL = 3.4mA
--
--
0.4
V
Output High
Voltage (VOH)
3.3V, IOL = -2.0mA
2.4
--
--
V
Capacitive
Loading
All pins
--
--
20
pF
Flash Memory
Endurance
PICASO PmmC Programming
--
1000
--
E/W
Display
Endurance
Hours of operation, measured to when
the display is 50% original brightness
--
20000
--
H
ORDER INFORMATION
Order Code: uLCD-35DT
Packaging: Module sealed in an antistatic foam padded 4D Systems box
15. Revision History
Hardware Revision
Revision Number
Date
1.03
25/11/13
Description
Initial Public Release
Datasheet Revision
Revision Number
Date
1.5
17/10/17
1.6
4/3/19
1.7
11/11/2019
1.8
12/01/2023
4D Systems
Description
Initial Public Release
Cosmetic Changes to micro LCD Datasheet range
Updated details regarding Serial Port voltage tolerance
Modified datasheet for web-based documentation.
DATASHEET
Page 41 of 41
