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Atmel Evaluation Kit AT91SAM9G20-EK AT91SAM9G20-EK Fiche De Données

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AT91SAM9G20-EK
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Board Description
AT91SAM9G20-EK Evaluation Board User Guide
3-5
6413C–ATARM–18-Feb-09
3.3
Microcontroller
„
One 217-ball LFBGA fitted on board
3.4
Memory
„
32 Kbytes of Internal ROM
„
Two 4-KByte Internal SRAMs
„
Atmel serial DataFlash
„
64 Mbytes of SDRAM memory (32-bit bus width)
„
256 Mbytes of NAND Flash memory (8-bit bus width)
„
TWI serial EEPROM
3.5
Clock Circuitry
„
18.432 MHz standard crystal for the embedded oscillator
„
Selectable 32,768Hz Low-power external standard crystal Oscillator or Internal Low Power RC 
Oscillator
3.6
Reset Circuitry
„
Internal reset controller with bi-directional reset pin
„
External reset pushbutton
3.7
Shutdown Controller
„
Programmable shutdown and Wake-Up
„
Wake-up push button
3.8
Power Supply Circuitry
„
On-board 1.0V High Efficiency step-down charge pump regulator with shutdown control
„
On-board 3.3V linear regulator with shutdown control
„
On-board power sequencer
3.9
Remote Communication
„
One serial interface (DBGU COM Port) via RS-232 DB9 male socket
„
One complete modem serial interface (COM Port 0) via RS-232 DB9 male socket
„
One additional serial interface (COM Port 1) with RTS/CTS handshake control via
„
RS-232 DB9 male socket
„
USB V2.0 full-speed compliant, 12 Mbits per second (UDP)
„
Two USB Host ports V2.0 full-speed compliant, 12 Mbits per second (UHP)