ATSAM3703 datasheet(7/36 Pages) ATMEL

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6237A–DRMSD–29-May-06

ATSAM3703

Pinout

6.1

Pin Description

Identical sharing number indicates multifunction pins.

Pd indicates pin with built-in pull-down resistor.

Pu indicates pin with built-in pull-up resistor.

SSTL indicates a SSTL_2 class 1 compliant I/O pin.

Table 6-1.

ATSAM3703 Pin Description

Pin Name

Pin Number

Type

Sharing

Description

GND

1, 13, 24, 32, 40, 45, 49,

54, 61, 70

PWR

Digital ground. All these pins should be returned to a ground

plane

VC18

28, 46, 62, 77

PWR

Core power. All these pins should be returned to nominal 1.8V

or to PWROUT if the built-in power switch is used.

VC33

4, 76

PWR

Periphery power. All these pins should be returned to nominal

3.3V.

VC25

22, 33, 42, 50, 55

PWR

Memory PAD Power +2.25V to +3.6V. All VC25 pins should be

returned to +2.5V (for DDR SDRAM) or 3.3V (for SDRAM)

PWRIN

PWR

Power switch input, should be returned to nominal 1.8V even if

the power switch is not used.

PWROUT

PWR

Power switch output, should be connected to all VC18 pins if

the power switch is used.

VREF

VC25/2 reference for SSTL_2 pins.

D7 - D0

10, 9, 8, 7, 6, 5, 3, 2

I/O

Slave 8-bit interface data. Output if CS and RD are low (read

from chip), input if CS and WR are low (write to chip). Type of

data defined by A0 input.

I/O7 - I/O0

10, 9, 8, 7, 6, 5, 3, 2

I/O

SmartMedia data or other peripheral data

P0.7 - P0.0

10, 9, 8, 7, 6, 5, 3, 2

I/O

General purpose I/O can individually be programmed as input

or output

CLAD3 - 0

10, 9, 8, 7

Optional bit clocks and word selects for digital audio input.

Used for sampling rate conversion, for external incoming digital

audio such as AES/BEU or S/Pdif.

WSAD3 - 0

6, 5, 3, 2

Slave 8-bit interface address. Indicates data/status or data/ctrl

transfer type (CS RD low or CS WR low)

SMPD

SmartMedia presence detect

P0.10

General purpose input pin

SCLK

Serial slave synchronous interface input clock

Slave 8-bit interface chip select, active low.

P0.11

General purpose input pin

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