Atmel Evaluation Board AT91SAM9XE-EK - Manual (Page 15)

AT91SAM9XE-EK Evaluation Board User Guide 3-5
6311A–ATARM–04-Feb-08
3.3 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.
3.4 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
3.5 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
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 1.8V High Efficiency step-down charge pump regulator with shutdown control
„ On-board 3.3V linear regulator with shutdown control
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