Chipsee PPC-A72-121-P Manual de usuario
Contents
31. PPC-A72-121-P
41.1. Product Overview
51.2. Ordering Options
51.2.1. Operating System
61.2.2. Optional Features
61.3. Hardware Features
71.4. Power Input
81.5. Touch Screen
91.6. Connectivity
91.6.1. RS232+RS485+CAN+GPIO Connector
111.6.2. USB Connectors
121.6.3. LAN Connectors
131.6.4. WiFi & BT Module
131.6.5. 4G/LTE Module
151.7. TF Card Slot
161.8. Audio Connectors
161.9. Power Button
171.10. Mounting Procedure
171.11. Mechanical Specications
181.12. Disclaimer
181.13. Technical Support
Chipsee IPC Page 2 of 18
PPC-A72-121-P
Front View
Rear View
PPC-A72-121-P
Chipsee IPC Page 3 of 18
Side View 1
Side View 2
Product Overview
The Cortex -A72/53 series PPC-A72-121-P (PN: CS10768R121P) is a high-quality industrial
panel PC. It features a 12.1” ten-point capacitive touch screen with a resolution of 1024 x
768 pixels and brightness of 400 cd/m .
Key Applications
Human Machine Interface HMI
Mobile Applications
Video Processing
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PPC-A72-121-P Product Overview
Chipsee IPC Page 4 of 18
Machine Learning
Video Gaming
Process Control
Process Monitoring
ATM…
It is available both as an embedded solution and as a device hosed in an aluminum casing
with bezels, thus facilitating dierent installation options:
Installation on an industrial cabinet
Integration with the existing equipment
The PPC-A72-121-P Industrial Panel PC is based around the powerful CS-SOM-RK3399
System on Module (SoM), powered by the Rockchip RK3399 low-power processor which
integrates a dual-core Cortex -A72 and a quad-core Cortex -A53 with a separate NEON
coprocessor.
The RK3399 supports multi-format video decoders and has a high-performance dual-
channel external memory interface (DDR3/DDR3L/LPDDR3/LPDDR4) capable of sustaining
demanding memory bandwidths. It also provides a complete set of peripheral interfaces.
Ordering Options
Chipsee products can be customized during the ordering process. The product will be
shipped with the pre-installed factory defaults if no extra requirements are specied. The
table in the Hardware Features section provides information about the default options
bundled with the product.
Operating System
This product comes with a pre-installed OS of your choice. Please see the list below for the
supported OSes, which can be also obtained from the Software Documentation section,
along with the detailed installation instructions.
Chipsee Linux*
Android 7.1
Debian 10
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Note
You can order The PPC-A72-121-P Industrial Panel PC from the ocial Chipsee Store or from your nearest
distributor.
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PPC-A72-121-P Ordering Options
Chipsee IPC Page 5 of 18
*Chipsee Linux is based on buildroot that has been integrated with:
Chipsee Hardware Test Application
An initialization script for GPIO/Buzzer/Audio
Multiple libraries, such as the libQt5Sql to develop Qt application with SQL
Various packages, such as the ntfs-3g to use NTFS le system
Optional Features
The PPC-A72-121-P Industrial Panel PC does not include 4G/LTE module by default. The
module is optional and can be selected at the Chipsee store during the ordering process.
Hardware Features
The PPC-A72-121-P Industrial Panel PC oers a broad range of performance and
connectivity options for scalable integration, providing expandability to meet future needs.
Some of the key features are listed in the table below.
1.
2.
3.
4.
Warning
The Software Documentation section provides a detailed instruction on how to install dierent OSes on your own.
However, bear in mind that Chipsee can’t take the responsibility of inadequate installation procedure. If you “brick”
your device, please contact Chipsee Technical Support at [email protected] for further assistance
Warning
Installation, repair, and maintenance tasks should be performed by trained personnel only.
Chipsee does not bear any responsibility for damage caused by inadequate handling of the product.
PPC-A72-121-P
CPU Rockchip RK3399, Dual-core Cortex-A72 (1.8GHz), Quad-core Cortex-A53
(1.4GHz)
RAM 4GB DDR3
eMMC 16GB
Storage TF Card, Supports up to 128GB SDHC
Display 12.1” LCD, 1024 x 768, High Brightness: 400 cd/m
Touch 10-point capacitive touch screen
USB 1 x USB 2.0 HOST, 1 x USB 3.0 HOST, 1 x USB Type-C
LAN 1 x RJ45, GbE
Audio 3.5mm Audio In/Out Connector, 2W Internal Speaker
Buzzer Yes
2
PPC-A72-121-P Optional Features
Chipsee IPC Page 6 of 18
1(1,2)This product has 5 x UART channels in total. The default conguration is 3 x RS232 and 2 x RS485, including 1
debug port. UART can be swapped between RS232 and RS485 modes easily, so if you need a dierent RS232/
Power Input
The PPC-A72-121-P Industrial Panel PC can be powered by a wide range of input voltages:
From 12V to 36V DC. The power input connector is a 3-pin, 3.81mm terminal.
PPC-A72-121-P
RTC Yes
RS232 3 x RS232 (Optional 5 x RS232 at most, 1 debug port)1
RS485 2 x RS4851
GPIO 8 Channels
WiFi/BT Integrated WiFi/BT Module
4G/LTE Supported, Optional
Power Input From 12V to 36V
Current at 15V 1500mA Max
Power Consumption 18W Typical
Working
Temperature From 0°C to +60°C
OS Android 7.1, Debian 10, Buildroot Linux Qt5.14
Dimensions PPC-A72-121-P (PN: CS10768R121P): 320 * 260 * 55.5mm
Weight PPC-A72-121-P (PN: CS10768R121P): 3100g
Mounting PPC-A72-121-P (PN: CS10768R121P): Panel, VESA
Table 87 Key Features
PPC-A72-121-P Power Input
Chipsee IPC Page 7 of 18
Power Input
Note that the “+” sign represents the positive power input, and it is printed both at the
casing and as a silk-screen on a PCB of the embedded version. The “-” terminal is shorted to
the ground.
Touch Screen
The PPC-A72-121-P Industrial Panel PC uses a 10-point capacitive touch screen.
Figure 423: Capacitive Touch Screen Connector
Power Input Denition
Pin Number Denition Description
Pin 1 Positive Input DC Power Positive Terminal
Pin 2 Negative Input DC Power Negative Terminal
Pin 3 Ground Power System Ground
Table 88 Power Connector
Note
The system ground “G” is connected to power negative “-” on board.
Attention
A capacitive touch screen is susceptible to power noise and Electromagnetic Radiation (EMR). It may cause LCD ripples
or even capacitive touch malfunction. If using a capacitive multi-touch test application, you might notice the touch
points oat erratically across the display. There are several solutions to this problem:
Use a high-quality Power Adapter Unit (PSU) with low EMR. You can also provide power from a battery.
1.
PPC-A72-121-P Touch Screen
Chipsee IPC Page 8 of 18
Connectivity
There are many connectivity options available on the PPC-A72-121-P industrial PC. It has 1 x
USB 2.0 HOST, 1 x USB 3.0 HOST, 1 x USB Type-C, 1 x network connector (RJ45) supporting
up to 1 Gbps, 8 x GPIO and 5 x UART terminals (RS232/485).
RS232+RS485+CAN+GPIO Connector
The serial communication interfaces (RS485, RS232, and CAN) are routed to a 12-pin
3.81mm terminal, as illustrated in the gure below. Serial communication on both RS485
and RS232 interfaces can reach up to 115200 kbps.
Isolated GPIO reduced schematic
Make sure that the PPC-A72-121-P Power Input connector (pin 3) is properly connected to the Power System
Ground to provide sucient EMI shielding and eliminate the problem entirely.
Bad GND problems can also be conrmed by touching pin 3 of the Power Input connector with one hand while
operating the capacitive touch screen with the other hand. In this case, the operator’s body acts as the Power
System Ground.
2.
3.
PPC-A72-121-P Connectivity
Chipsee IPC Page 9 of 18
The table below oers more detailed description of every pin and its denition:
RS232 / RS485 / CAN / GPIO Pin Denition:
Pin Number Denition Description
Pin 1 CAN1_H CAN H signal
Pin 2 CPU_RS232_2_RXD CPU UART2, CPU RS232 RXD signal
Pin 3 CAN1_L CAN L signal
Pin 4 CPU_RS232_2_TXD CPU UART2, CPU RS232 TXD signal
Pin 5 RS485_4- USB UART4, RS485 -(B) signal
Pin 6 IN4 Isolated Input 4
Pin 7 RS485_4+ USB UART4, RS485 +(A) signal
Pin 8 IN3 Isolated Input 3
Pin 9 RS485_3- USB UART3, RS485 -(B) signal
Pin 10 IN2 Isolated Input 2
Pin 11 RS485_3+ USB UART3, RS485 +(A) signal
Pin 12 IN1 Isolated Input 1
Pin 13 RS232_2_RXD USB UART2, RS232 RXD signal
Pin 14 OUT4 Isolated Output 4
Pin 15 RS232_2_TXD USB UART2, RS232 TXD signal
Pin 16 OUT3 Isolated Output 3
Pin 17 RS232_1_RXD USB UART1, RS232 RXD signal
Pin 18 OUT2 Isolated Output 2
Pin 19 RS232_1_TXD USB UART1, RS232 TXD signal
PPC-A72-121-P RS232+RS485+CAN+GPIO Connector
Chipsee IPC Page 10 of 18
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