User manual

Evaluation Kit Hardware
SAM4S-EK2 User Guide 4-21
11176A–ATARM–24-Sep-12
R47 0R PA9
R48 0R R2OUT/MN5
R59 0R LCD backlight LED anode
R67 0R PA17
R68 0R PC13
R69 0R PA16
R70 0R Vref TSC
R118 0R PA18 ZB_RSTN
R119 0R PA17 IRQ1_ZBEE
R120 0R PA16 IRQ0_ZBEE
R121 0R PA15 SLP_TR
Table 4-8. Default Not Populated Parts
Reference Function
J1, R1
Y1, R3, R7
R6, R8
R9, R10
JP1, JP4
C13
J2
External clock resource input
Backup 12 MHz crystal
Isolation between 12 MHZ clock source and GPIO line
Isolation between 32 kHz clock source and GPIO line
JTAGSEL and TEST selector
Coupling capacitor
LQFP100 Socket
R22
R24, R30
JP28
Optional write protection on NAND Flash
Differential impedance matching for RS485 cable
Option for software test
D1
R61, R63, RA2, RA3
Optional ESD protection for LCD touch panel
Optional databus termination for LCD controller
R122, R123 Optional TWI
Table 4-7. Disconnecting Possibility
Designation Default Assignment PIO