ATSAM3308 datasheet(6/24 Pages) ATMEL

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ATSAM3308

6090A–DRMSD–08/04

Pinout

Pin Description

In the Pin Description table below:

•

Identical sharing number indicates multifunction pins.

•

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

•

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

Table 2. Pinout by Pin Name

Pin Name

Pin Number

Type

Sharing

Description

GND

9, 22, 30, 41, 56, 70,

75, 87, 97

PWR

–

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

VC18

20, 47, 73, 99

PWR

–

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

PWROUT if the built-in power switch is used.

VC33

13, 50, 83

PWR

–

Periphery power. All these pins should be returned to nominal 3.3V.

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

D7 - D0

96, 95, 91, 90, 82, 81,

77, 76

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

96, 95, 91, 90, 82, 81,

77, 76

I/O

SmartMedia data or other peripheral data

P0.7 - P0.0

96, 95, 91, 90, 82, 81,

77, 76

I/O

General-purpose I/O; can be programmed individually as input or output.

CLAD3 - 0

96, 95, 91, 90

Optional bit clocks for digital audio input. Used for sampling rate

conversion for external incoming digital audio such as AES/BEU or

S/Pdif.

WSAD3 - 0

82, 81, 77, 76

Optional word selects for digital audio input. Used for sampling rate

conversion for external incoming digital audio such as AES/BEU or

S/Pdif.

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

100

Slave 8-bit interface chip select, active low.

P0.11

100

General-purpose input pin

SYNC

100

Serial slave synchronous interface input sync signal

Slave 8-bit interface write, active low. D7 - D0 data is sampled by chip on

WR rising edge if CS is low

SMC

SmartMedia configuration. This pin is sensed after power-up. If found

low, it is assumed that a SmartMedia connector is present. The built-in

firmware will wait for SmartMedia SMPD.

P0.12

General-purpose input pin

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