(Click for larger view of the Mini2440)
Chinese embedded ARM vendor Hiteg offers a variety of development boards and processor modules based on the Samsung S3C2440 and lower-power S3C2410 processors. The boards are typically available with software development kits (SDKs) for Linux 2.6 and Windows CE 5.0 (more details on the SDKs below).
The Mini2440 appears to be Hiteg's smallest S3C2440 development kit to date. Measuring 3.9 by 3.9 inches (100 x 100mm), the AT2440 is a four-layer board that clocks the Samsung S3C2440's ARM920T RISC core at 400MHz (dominant frequency) and 533MHz (peak frequency). Launched in 2003, the widely used S3C2440 system-on-chip (SoC) primarily targets handheld devices such as smartphones and PDAs. The SoC integrates 16KB each of instruction and data cache, 4KB RAM, a NAND flash boot loader, power management functions, an interrupt controller, and an external memory controller (see block diagram)
Mini2440 with LCD
(Click to enlarge)
The Mini2440 comes standard with 64MB each of SDRAM and NAND flash, expandable via an SD card slot, along with 2MB of NOR flash. The board has camera and LCD interfaces, and can be ordered with a built-in 3.5-inch QVGA (320x240) module or external 7-inch display.
The Mini2440's complement of PC-style I/O includes Ethernet, USB host and slave ports, and three serial connections. Available options include a WiFi module, and CMOS and USB camera options. The Mini2440 board offers a "stable CPU power source chip and reset system," says Hiteg.
Specifications listed for the Mini2440 include:Processor -- Samsung S3C2440 (ARM920T core) clocked at up to 533MHz
Memory -- 64MB SDRAM (up to 100MHz)
Flash -- 64MB NAND flash; 2MB NOR flash
Flash expansion -- 1 x SD card interface
Display -- LCD controller with four-wire resistive touchscreen interface; optional 3.5- or 7-inch LCD displays
Networking -- 1 x 10/100 Ethernet RJ-45 interface (DM9000 chip)
WiFi -- optional WiFi module
USB -- 1 x USB Host; 1 x USB Slave (B-type interface)
Serial -- 3 x serial ports
Audio -- 1 x stereo audio output interface; 1 x mic interface
Camera -- 1 x 20-pin (2.0mm space) camera interface; optional CMOS or USB cameras
Other I/O:1 x 10-pin (2.0mm space) JTAG interface
4 x user LEDs
6 x user buttons
1 x PWM control buzzer
1 x adjustable resistance, for AD conversion test
1 x I2C bus AT24C08 chip, for I2C bus test
1 x 34-pin 2.0mm GPIO interface
1 x 40-pin 2.0mm system bus interfacePower -- RTC battery; power supply interface
Clock -- internal real-time clock and 12Mhz passive crystal system clock source
Dimensions -- 3.9 x 3.9 inches (100 x 100mm)
Operating system -- Linux 2.6.13; WindowsCE.NET 5.0Available SDKs
The Mini2440 software development kit (SDK) includes the following components, says Hiteg:ADS1.2 development environment
H-JTAG burning and debugging tool
SJF2440 flash burning tool for Windows
Jflash-2440 flash burning tool for Linux (source code provided)
Serial tools CRT, dnw
Bmp2t (picture transformer)
USB driver for Windows XP/2000
Vivi bootloader for Linux (source code provided)
Test programs (source code provided)
WinCE BSP and example project fileThe Linux version of the SDK also offers additional Linux development tools and Linux 2.6.13 kernel source code, as well as Qtopia and "embedded browser" source code, says Hiteg. Components include:arm-linux-gcc-3.3.2 used for compiling Qtopia
arm-linux-gcc-3.4.1 used for compiling kernel
arm-linux-gcc-2.95.3 used for compiling Vivi
Mkyaffsimage YAFFS filesystem image maker
Drivers -- DM9000, TFT LCD, audio card, touchscreen, SD card, RTC, expansion serial port, USB camera, USB mouse, keyboard, U-diskAvailability
The Mini2440 development board is available now for 150 Euros (about $211 US), while the 3.5-inch LCD version costs 200 Euros ($281). The 7-inch LCD version costs 280 Euros ($394), or 330 Euros ($464) when also equipped with a WiFi module and CMOS camera. More information may be found here.
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