Monday, November 8, 2010

Learning embedded development board suits the best partner TQ2440

 Introduction
inserted needle core board core board with six military layout design, famous factory PCB, Immersion Gold process, with a good electrical connectivity,Bailey UGG boots,
and strong seismic performance, than the market some of the more stable four-layer board run the program efficiently.
CPU: Samsung ARM9 chip, with the S3C2440AL as the CPU, and stable operation at 400Mhz
SDRAM: 64MB of SDRAM chips, the user can later be upgraded to 128MB of memory. < br> FLASH: 64MB Nand Flash + 2MB Nor Flash Double Flash start, start the program to provide safe and efficient. Users can later upgrade 128MB/256MB/512MB NAND flash.
power: 1.25V professional power chips to the core board, eliminate CPU heat the hot issues, protection of product stability and efficient operation.
Bootloader: with a powerful U-BOOT, a first U-boot supports USB key update system,
operating system: Linux2.6 kernel, Wince 5.0 < br> core board provides up to 192 feet of the extension interface, almost all of the resources leads to the S3C2440,
interfaces are used 2.0 spacing, to facilitate customers to purchase the second floor with the interface development.
core board size: 37mmt78mm < br> Bottom: TQ2440V1.0.
serial: onboard a five-wire asynchronous serial port, baud rate 115200bps extended to two other serial, Wince and three serial ports are provided under linux source code.
network interface : 100M onboard network interface, DM9000 network card, with connection and transmission indicator light;
USB Interface: onboard USB1. 1 HOST interface; onboard USB1. 1 Device Interface
SD / MMC Interface: Onboard a SD card interface,UGG boots clearance, which can be accessed 2GB SD card;
expand outside IDE interface: integrated in the backplane bus interface which provides linux drivers.
Audio Interface: Onboard IIS interface chip UDA1341, all the way stereo audio output interface can connect the headset or speakers; recordable.
LCD and touch screen interface: on-board integrated 4-wire resistive touch screen interface of the relevant circuit; were 40pin and 50pin LCD interface, LCD controller,Discount UGG boots, all leads to the signal; support for black and white, 4 gray degree, 16 level grayscale, 256-color, 4096 color STN LCD screen, the screen resolution up to 1024 * 768 pixels; can be accessed 7-inch, 10-inch LCD screen; can be accessed by supporting VGA adapter plate to achieve VGA output. < br> Clock source: internal real time clock RTC board (with back-up lithium battery);
debugging and downloading interface: Onboard a 10pinJTAG interface, supports single-step debugging, etc. ADS1.2; we are supporting ADS debugger manual. < br> reset circuit: board a reset button, using a dedicated reset chip reset, stable and reliable;
power interface: 5V power supply, power switch with indicator light;
AD function: on-board adjustable resistor to the ADC pin is used to verify the analog-digital conversion;
IIC functions: onboard Atmel24C02 IIC function
PWM chip verification functions: on-board PWM function test buzzer;
Camera Interface: Onboard Camera the first interface,UGGs, which can be accessed OV9650, for network monitoring, linux, Wince had driver support under;
user keys: four user keys on board; have driver support, the use of external interrupt
board as many as 30 foreign expansion number of GPIO, up to 10 multiple interrupts, data lines 16, 25 Road, the address lines, chip select signals
floor size: 105mmt128mm. 

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