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3.3
3.4
3.5
3.6
3.7
3.8
3.9
Microcontroller
One LFBGA 217-ball device fitted on board
One LQFP 208-lead device footprint
To use the microcontroller in the LQFP package, the user has to unsolder MN4 and solder the PQFP208
microcontroller on the MN6 footprint.
Memory
32 Kbytes of Internal ROM
32 Kbyte of Internal SRAM
512 Kbytes of Internal High-speed Flash
Atmel serial DataFlash
64 Mbytes of SDRAM memory (32-bit bus width)
256 Mbytes of NANDFlash memory (8-bit bus width)
TWI serial EEPROM
Clock Circuitry
18.432 MHz standard crystal for the embedded oscillator
Selectable 32768Hz Low-power external standard crystal Oscillator or Internal Low Power RC
Oscillator
Reset Circuitry
Internal reset controller with bi-directional reset pin
External reset pushbutton
Shutdown Controller
Programmable shutdown and Wake-Up
Wake-up push button
Power Supply Circuitry
On-board 1.8V High Efficiency step-down charge pump regulator with shutdown control
On-board 3.3V linear regulator with shutdown control
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
AT91SAM9XE-EK Evaluation Board User Guide
3-5
6311A–ATARM–04-Feb-08
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