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Board Description
3.3
3.4
3.5
3.6
3.7
3.8
3.9
3.10
Memory
Clock Circuitry
Reset Circuitry
Shutdown
Controller
Power Supply
Circuitry
Remote
Communication
Analog Interface
User Interface
! 256 Kbytes of Internal High-speed Flash
! 32 Kbytes of Internal High-speed SRAM
! Atmel serial DataFlash
! 18.432 MHz standard crystal for the embedded oscillator
! 32 KHz internal RC oscillator
! Internal reset controller with a bi-directional reset pin
! External reset pushbutton
! Programmable shutdown and Wake-Up
! Force Wake-Up and Wake-up pushbutton
! USB powered, the dynamic power consumption on VDD1V8 is less than 50 mA at full
speed when running out of the Flash. The total current at power-up is less than 100
mA.
! External power can be applied via USB Power adapter 5V 0.5A with USB A/B cable
! On-chip embedded VDDCORE 1.8V regulator
! On-board 3.3V linear regulator with shutdown control
! One Serial interface (DBGU COM Port) via RS-232 DB9 male socket
! USB V2.0 Full-speed compliant, 12 Mbits per second (UDP)
! Two CAN 2.0B communication ports via the 3-position printed circuit terminal block
! One LIN communication port via the 3-position printed circuit terminal block
! One selectable 0.2% 3.00V Vref or 3.3V ANA
! One 3-position printed circuit terminal block
! Two analog up to Vref inputs. One external user input and one back-looped with
buffered PWM0 output.
! One buffered PWM0 analog output (up to Vref)
! One 5-way joystick (4 directions and push for confirmation)
! Four general-purpose buffered green LEDs (PWM controlled)
AT91SAM7A3-EK Evaluation Board User Guide
3-5
6165C–ATARM–26-Jun-06
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