Chipsee PPC-A55-121 Manual de usuario
Contents
31. PPC-A55-121
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
141.6.5. 4G/LTE Module
151.7. M.2 SSD Slot
151.8. TF Card & SIM Card Slot
161.9. Audio Connectors
161.10. HDMI Connector
171.11. PROG Button
181.12. Mounting Procedure
181.13. Mechanical Specications
191.14. Disclaimer
191.15. Technical Support
Chipsee IPC Page 2 of 19
PPC-A55-121
Front View
Rear View
PPC-A55-121
Chipsee IPC Page 3 of 19
Side View 1
Side View 2
Product Overview
The Cortex -A55 series PPC-A55-121 (PN: CS10768-RK3568-121P) is a high-quality IP65-
compliant industrial panel PC. It features a 12.1” ten-point capacitive touch screen with a
resolution of 1024 x 768 pixels and a brightness of 400 cd/m .
Key Applications
Human Machine Interface HMI
Mobile Applications
Video Processing
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PPC-A55-121 Product Overview
Chipsee IPC Page 4 of 19
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-A55-121 Industrial Panel PC is based around the powerful RK3568 System on Chip
(SoC), powered by the Rockchip RK3568 low-power processor which integrates a quad-core
Cortex -A55 processor.
The RK3568 supports multi-format video decoders and has a high-performance RAM
(LPDDR4X) 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 also be obtained from the Software Documentation section,
along with the detailed installation instructions.
Debian 11
Android 11
Buildroot Linux Qt 5.15
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Note
You can order the PPC-A55-121 from the ocial Chipsee Store or from your nearest distributor.
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Warning
PPC-A55-121 Ordering Options
Chipsee IPC Page 5 of 19
Optional Features
The PPC-A55-121 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-A55-121 Industrial Panel PC oers a broad range of performance and connectivity
options for scalable integration, providing expandability according to future needs. Some of
the key features are listed in the table below.
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-A55-121
CPU Rockchip RK3568, Quad-core Cortex-A55 (2.0GHz)
RAM Samsung 2GB LPDDR4X, 4266 Mbps
eMMC 16GB
SSD Optional, supports M.2 2280 NVME SSD (PCI-E 3.0 x 2)
Storage TF Card, Supports up to 128GB SDHC
Display 12.1” LCD, 1024 x 768, High Brightness: 400 cd/m
HDMI 1 x HDMI OUT
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
RTC
High accuracy RTC with farad capacitor, can work 1 week after power o (default).
High accuracy RTC with lithium coin battery, can work 3 years after power o
(optional).
RS232 Default to 2 x RS232 (including 1 debug port). Up to 6 x RS232.1
RS485 Default to 2 x RS485. Optionally, these 2 x RS485 can be congured to RS232.1
CAN Default to 2 x CAN. Optionally, these 2 x CAN can be congured to RS232.
2
PPC-A55-121 Optional Features
Chipsee IPC Page 6 of 19
1(1,2)This product has 4 x UART by default, 6 x UART channels at most. The default conguration is 2 x RS232 and 2
x RS485, including 1 RS232 debug port. The 2 x CAN can be congured to RS232. UART can be swapped
between RS232 and RS485 modes easily, if you need a dierent RS232/RS485 conguration, please get in touch
Power Input
The PPC-A55-121 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. The polarity
and the pinout is clearly marked on the housing of the product as shown in the gure
below.
PPC-A55-121
GPIO 8 Channels Isolated IO, 4 x Input and 4 x Output
WiFi/BT Integrated WiFi/BT Module
4G/LTE Supported, Optional
Power Input From 12V to 36V
Current at 12V 1000mA Max at 12V
Power
Consumption 12W Typical
Working
Temperature From 0°C to +60°C
OS Android 11, Debian11, Buildroot Linux Qt 5.15
Dimensions PPC-A55-121 (PN: CS10768-RK3568-121P): 320 * 260 * 55.5mm
Weight PPC-A55-121 (PN: CS10768-RK3568-121P): 3100g
Mounting PPC-A55-121 (PN: CS10768-RK3568-121P): Panel, VESA
Table 138 Key Features
PPC-A55-121 Power Input
Chipsee IPC Page 7 of 19
Power Input
Note that the “+” sign represents the positive power input, it is printed 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-A55-121 Industrial Panel PC uses a 10-point capacitive touch screen. However, the
Debian OS supports only One-Point touch.
The gure below shows the capacitive touch screen connected to the motherboard via the
USB connector.
Figure 602: Capacitive Touch 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 139 Power Connector
Note
The system ground “G” is connected to power negative “-” on board.
Attention
PPC-A55-121 Touch Screen
Chipsee IPC Page 8 of 19
Connectivity
There are many connectivity options available on the PPC-A55-121 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, 2 x CAN and 4 x UART terminals (RS232/485).
RS232+RS485+CAN+GPIO Connector
The serial communication interfaces (RS485, RS232, and CAN) are routed to a 24-pin
3.81mm terminal, as illustrated in the gure below. Serial communication on both RS485
and RS232 interfaces can reach up to 115200 kbps.
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.
Make sure that the PPC-A55-121 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 problem 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.
1.
2.
3.
PPC-A55-121 Connectivity
Chipsee IPC Page 9 of 19
Isolated GPIO reduced schematic
The table below oers a detailed description of every pin:
RS232 / RS485 / CAN / GPIO Pin Denition:
Pin Number Denition Description
Pin 1 CAN0_H CAN H signal
Pin 2 CAN1_H CAN H signal
Pin 3 CAN0_L CAN L signal
Pin 4 CAN1_L CAN L signal
Pin 5 RS485_4- CPU UART4, RS485 -(B) signal
Pin 6 IN4 Isolated Input 4
Pin 7 RS485_4+ CPU UART4, RS485 +(A) signal
Pin 8 IN3 Isolated Input 3
Pin 9 RS485_3- CPU UART3, RS485 -(B) signal
Pin 10 IN2 Isolated Input 2
Pin 11 RS485_3+ CPU UART3, RS485 +(A) signal
Pin 12 IN1 Isolated Input 1
Pin 13 RS232_0_RXD CPU UART0, RS232 RXD signal
Pin 14 OUT4 Isolated Output 4
Pin 15 RS232_0_TXD CPU UART0, RS232 TXD signal
Pin 16 OUT3 Isolated Output 3
Pin 17 RS232_2_RXD CPU UART2, Debug RXD signal
Pin 18 OUT2 Isolated Output 2
Pin 19 RS232_2_TXD CPU UART2, Debug TXD signal
PPC-A55-121 RS232+RS485+CAN+GPIO Connector
Chipsee IPC Page 10 of 19
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