User manual

Evaluation Kit Hardware
4-2 SAM3N-EK Development Board User Guide
11080C–ATARM–30-Mar-11
4.2 Features List
Here is the list of the main board components and interfaces:
 SAM3N4C QFP chip with optional socket footprint
 12 MHz crystal
 32.768 KHz crystal
 32-Megabit Serial DataFlash
 2.0 inch TFT color LCD display with backlight
 UART port with level shifter IC
 Micro SD interface
 Reset buttons: NRST
 User buttons: Left and Right
 QTouch
®
buttons: Left, Right, and Slider
 JTAG port
 On-board power regulation
 Two user LEDs
 Power LED
 ZigBee
®
connector
 2x32 bit PIO connection interfaces (PIOA, PIOC) and 1x15 bit PIO connection interface (PIOB)
4.3 Function Blocks
4.3.1 Processor
The SAM3N-EK is equipped with a SAM3N4C device in LQFP100 package.
4.3.2 Memory
The SAM3N4 chip embeds:
 256 Kbytes of embedded Flash
 24 Kbytes of embedded SRAM with dual bank
 16 Kbytes of ROM with embedded BootLoader routines (UART) and In-Application Programming
functions (IAP) routines.
The SAM3N-EK features an external DataFlash through SPI bus
Figure 4-2. DataFlash
NPCS3 chip select signal is used for DataFlash chip selection.
DATA FLASH
SPI MOSI
SPI MISO
SPI CLK
NPCS_DATAFLASH
PA12
PA13
PA14
PA22
+3V3
DGND
+3V3
+3V 3
R32 0RR32 0R
R28 0RR28 0R
R29 10 RR29 10 R
MN7
AT25DF321
MN7
AT25DF321
NCS
1
SO
2
NWP
3
VCC
8
NHOLD
7
SCK
6
GND
4
SI
5
R27
47K
R27
47K
C35
100nF
C35
100nF
R31 0RR31 0R