AT91SAM9263-CU datasheet(5/1110 Pages) ATMEL

5 / 1110 page

6249H–ATARM–27-Jul-09

AT91SAM9263 Preliminary

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

Comments

Power Supplies

VDDIOM0

EBI0 I/O Lines Power Supply

Power

1.65V to 3.6V

VDDIOM1

EBI1 I/O Lines Power Supply

Power

1.65V to 3.6V

VDDIOP0

Peripherals I/O Lines Power Supply

Power

2.7V to 3.6V

VDDIOP1

Peripherals I/O Lines Power Supply

Power

1.65V to 3.6V

VDDBU

Backup I/O Lines Power Supply

Power

1.08V to 1.32V

VDDPLL

PLL Power Supply

Power

3.0V to 3.6V

VDDOSC

Oscillator Power Supply

Power

3.0V to 3.6V

VDDCORE

Core Chip Power Supply

Power

1.08V to 1.32V

GND

Ground

GNDPLL

PLL Ground

Ground

GNDBU

Backup Ground

Ground

Clocks, Oscillators and PLLs

XIN

Main Oscillator Input

Input

XOUT

Main Oscillator Output

Output

XIN32

Slow Clock Oscillator Input

Input

XOUT32

Slow Clock Oscillator Output

Output

PLLRCA

PLL A Filter

Input

PLLRCB

PLL B Filter

Input

PCK0 - PCK3

Programmable Clock Output

Output

Shutdown, Wakeup Logic

SHDN

Shutdown Control

Output

Driven at 0V only. Do not tie

over VDDBU.

WKUP

Wake-up Input

Input

Accepts between 0V and

VDDBU.

ICE and JTAG

NTRST

Test Reset Signal

Input

Low

Pull-up resistor

TCK

Test Clock

Input

No pull-up resistor

TDI

Test Data In

Input

No pull-up resistor

TDO

Test Data Out

Output

TMS

Test Mode Select

Input

No pull-up resistor

JTAGSEL

JTAG Selection

Input

Pull-down resistor. Accepts

between 0V and VDDBU.

RTCK

Return Test Clock

Output

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