PPC-E4+ Open Frame ARM Panel PC

  • Atmel ARM9 Jazelle AT91SAM9G45 400Mhz Processor
  • Up to 256 MB SDRAM, 1GB Flash, 8MB of Serial Flash
  • Ultra compact 480x272 screen with LED Backlight
  • EMAC OE Linux

The PPC-E4+, an ultra compact Panel PC with a 4.3 inch WQVGA (480 x 272) TFT color LCD and a resistive touch screen. The dimensions of the PPC-E4+ are 4.8” by 3.0”, about the same dimensions as that of popular touch cell phones. The PPC-E4+ is small enough to fit in a 2U rack enclosure.


  • WQVGA (480 x 272) Resolution with LED Backlight
  • Atmel ARM9 Jazelle AT91SAM9G45 400Mhz Processor 
  • Inexpensive Open-Frame Design
  • 10/100 Base-T Ethernet
  • 3 RS232 & 1 RS232/422/485 Port
  • 1 USB 2.0 (High Speed) Host port
  • 1 USB 2.0 (High Speed) OTG Port
  • Up to 256 MB SDRAM
  • Up to 1 GB Flash
  • Up to 8MB of Serial Data Flash
  • Battery backed Real Time Clock
  • Micro SD Flash Card Socket
  • 1 SPI & 1 I2C port
  • 1 Audio Beeper
  • Timer/Counters and Pulse Width Modulation (PWM) ports
  • 4 Channel 10-bit Analog-to-Digital converter
  • Graphic LCD Interface
  • Touchscreen Interface and Software Controlled Backlight On/Off & Brightness
  • JTAG for debug, including real-time trace
  • FREE Eclipse IDE with GCC & GDB development tools
  • Linux
  • Optional Power Over Ethernet (POE)
  • Optional Audio with Line-in/out


The PPC-E4+, an ultra compact Panel PC with a 4.3 inch WQVGA (480 x 272) TFT color LCD and a resistive touch screen. The dimensions of the PPC-E4+ are 4.8” by 3.0”, about the same dimensions as that of popular touch cell phones. The PPC-E4+ is small enough to fit in a 2U rack enclosure.

Unlike other compact Panel PCs, the PPC-E4+ comes with EMAC's Embedded Linux distribution installed and fully configured on the onboard flash disk. This allows the software engineer to concentrate on writing applications and not have to worry about configuration and setup. Just apply power and watch the User Interface appear on the vivid color LCD, Linux X-Windows desktop. Interact with the PPC-E4+ using the responsive, integrated touch screen.

The PPC-E4+ compact Panel PC utilizes a System on Module (SoM) for the processing core. This allows the user to easily upgrade, if more memory capacity, storage capacity or processing power is required. The PPC-E4+ includes an embedded ARM 9 SoM; this ARM System on Module features a 400Mhz Fanless Low Power Processor with Video and Touch. The SoM provided with the PPC-E4+ supports up to 256MB of SDRAM, Up to 1GB of Flash, and 4MB of serial data flash. Typical power consumption is less than 5 Watts and the LED backlight can be shut off when not in use to further decrease its power consumption.

The PPC-E4+ offers three RS-232 serial ports, and one RS232/422/485 port. Also provided are two USB 2.0 host ports, an Audio Beeper and a battery backed real time clock. A Micro SD card socket is provided for additional Flash storage. The PPC-E4+ can be connected to a network using the 10/100 Base-T Ethernet controller and its onboard RJ-45 connector.

When developing CE 6.0 application for the PPC-E4+, Microsoft Visual Studio 2005/2008 can be utilized. For Embedded Linux application development, EMAC provides a Free Eclipse IDE. Both Visual Studio and Eclipse provide everything the user needs for developing PPC-E4+ applications. All the compiling, linking, downloading, and debugging inherent to software development can be done from one easy to use high level interface. EMAC provides an SDK for the PPC-E4+, which contains source examples and drivers.

Data Sheets


Embedded Atmel AT91SAM9G45
Clock Speed
400 MHz
RAM Type
133 MHz DDR2
Primary Flash
256 MB NAND Flash
Secondary Flash
4 MB of Serial Data Flash
Memory Misc.
  • Flash Disk: Micro SDHC Socket.
  • System Reset: Supervisor with external Reset Button provision.
  • SSD: SPI serial HCSD interface up to 8+ GB Flash Disk
Primary IO
16x GPIO, (5x dedicated GPIO, 11x Configurable I/O)
I2S Audio port with Line-In/Line-Out & beeper
10/100 BaseT ethernet (POE optional)
1x USB Host, 1x USB OTG
Serial Ports
3x RS-232 with handshaking, 1x RS-232/422/485, high-speed SPI with chip selects, I2C
Primary I/O Misc.

Some IO configuration can be changed in the software to operate differently, IO functions are listed as configured by default.

  • Ethernet MAC: Built-In
  • Ethernet PHY: Micrel KSZ8041 with software PHY shutdown control
  • Ethernet Type: 10/100 Base-T Ethernet
  • Ethernet Interface: On-Board RJ-45 connector


  • Type: 4 Wire Analog Resistive
  • Resolution: Continuous
  • Controller: Built-In
  • Driver: Linux
  • Transparency: 80%
  • Durability: Over one million touches
Secondary IO
2.0B Port
Timers/ Counters/ PWM
2x 3 channel, 16-bit timers/counters with capture, compare, and PWM, 20-bit interval timer plus 12-bit interval counter
12-Bit 4-wire analog resistive Touchscreen
Display Type
4.3 " TFT Color LCD
480 × 272 px
Pixel Pitch
0.198 × 0.198 mm
LCD Colors
330 (cd/m²)
LCD Misc.
  • Resolution type: WQVGA
  • Viewing Direction: 6 o'clock
  • Brightness: Software controlled
  • Backlight: White LED (10 LEDS)
A/D Channels
A/D Resolution
Analog Misc.
  • Analog I/O:ADC with 4 channels utilized for 4-wire touchscreen interface.
  • Power: Power Management Controller allows selectively shutting down on processor I/O functionality and running from a slow clock.
Operating Systems

JTAG ProVision compatible

Mechanical and Environmental

4.8" ×3" ×1.2" (121mm × 76mm × 30mm)
5.7 oz
Power Requirements
Typical Voltage
5 V
Typical Current
1 A
Power Misc.

Power Supply Voltage: +5V DC

Alternate Wide voltage Input: 8-36 Vdc (Typical: 5 watts of power, Max 15 Watts)

Low Operating Temperature0 C (32 F)
High Operating Temperature60 C (140 F)


Pricing correct as of January 2021. Please contact EMAC for Current Pricing and Lead Time. Due to volatility in the electronics industry pricing is subject to change.

OEM / Quantity Pricing Available on Request - Less Services

(Single Unit Pricing. Includes: Integration, Setup,Testing, & Enhanced Support)

Product # Description Price
PPC-E4+0300 PPC-E4-9G45, Standard PPC w/Touchscreen, 400 MHZ, 256MB FLASH, 128MB RAM $375.00
PPC-E4+0303 PPC-E4-9G45, Deluxe PPC W/Touchscreen, 400 MHZ, 256MB FLASH, 128MB RAM, POE, Wide Voltage Input, AUDIO $425.00

Peripheral Options

Product # Description Price
PER-PWR-00032 5V @ 2.5A PS (110V @ 60 Hz US) $20.00
PER-PWR-00033 5V @ 3.2A PS (100-220V @ 47-63 Hz Intl.) $28.00
Operating Systems
SL05x-AON-xx EMAC OE Linux 5.x for ARM (Free installation at time of purchase of SBC & media) Free