ATSAM3N1CB-CU datasheet(7/60 Pages) ATMEL

7 / 60 page

11011BS–ATARM–22-Feb-12

SAM3N Summary

Signal Description

Table 3-1 gives details on the signal name 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 Power Supply

Power

1.62V to 3.6V

VDDIN

Voltage Regulator, ADC and DAC Power

Supply

Power

1.8V to 3.6V(3)

VDDOUT

Voltage Regulator Output

Power

1.8V Output

VDDPLL

Oscillator and PLL Power Supply

Power

1.65 V to 1.95V

VDDCORE

Power the core, the embedded memories

and the peripherals

Power

1.65V to 1.95V

Connected externally

to VDDOUT

GND

Ground

Clocks, Oscillators and PLLs

XIN

Main Oscillator Input

Input

VDDIO

Reset State:

- PIO Input

- Internal Pull-up

disabled

- Schmitt Trigger

enabled(1)

XOUT

Main Oscillator Output

Output

XIN32

Slow Clock Oscillator Input

Input

XOUT32

Slow Clock Oscillator Output

Output

PCK0 - PCK2

Programmable Clock Output

Output

Reset State:

- PIO Input

- Internal Pull-up

enabled

- Schmitt Trigger

enabled(1)

ICE and JTAG

TCK/SWCLK

Test Clock/Serial Wire Clock

Input

VDDIO

Reset State:

- SWJ-DP Mode

- Internal pull-up

disabled

- Schmitt Trigger

enabled(1)

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

ATSAM3N1CB-CU Datasheet(PDF) 7 Page - ATMEL Corporation

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