Atmel SAM4S Xplained Pro Starter and Evaluation Kit ATSAM4S-XPRO ATSAM4S-XPRO Data Sheet
Product codes
ATSAM4S-XPRO
13
SAM4S Series [DATASHEET]
Atmel-11100G-ATARM-SAM4S-Datasheet_27-May-14
3.
Signal Description
gives details on signal names classified by peripheral.
Table 3-1.
Signal Description List
Signal Name
Function
Type
Active
Level
Voltage
Reference
Comments
Power Supplies
VDDIO
Peripherals I/O Lines and USB transceiver
Power Supply
Power
–
–
1.62V to 3.6V
VDDIN
Voltage Regulator Input, ADC, DAC and
Analog Comparator Power Supply
Power
–
–
1.62V to 3.6V
VDDOUT
Voltage Regulator Output
Power
–
–
1.2V output
VDDPLL
Oscillator and PLL Power Supply
Power
–
–
1.08 V to 1.32V
VDDCORE
Power the core, the embedded memories
and the peripherals
Power
–
–
1.08V to 1.32V
GND
Ground
Ground
–
–
–
Clocks, Oscillators and PLLs
XIN
Main Oscillator Input
Input
–
VDDIO
XOUT
Main Oscillator Output
Output
–
XIN32
Slow Clock Oscillator Input
Input
–
XOUT32
Slow Clock Oscillator Output
Output
–
PCK0–PCK2
Programmable Clock Output
Output
–
Real Time Clock
RTCOUT0
Programmable RTC waveform output
Output
–
VDDIO
RTCOUT1
Programmable RTC waveform output
Output
–
Serial Wire/JTAG Debug Port - SWJ-DP
TCK/SWCLK
Test Clock/Serial Wire Clock
Input
–
VDDIO
- Schmitt Trigger enabled
TDI
Test Data In
Input
–
TDO/TRACESWO
Test Data Out / Trace Asynchronous Data
Out
Output
–
TMS/SWDIO
Test Mode Select /Serial Wire Input/Output
Input / I/O
–
JTAGSEL
JTAG Selection
Input
High
Permanent Internal
pull-down