ATSAM3108B datasheet(6/23 Pages) ATMEL

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6092C–DRMSD–12-Feb-07

ATSAM3108B

Pinout

6.1

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 6-1.

Pinout by Pin Name

Pin Name

Pin Number

Type

Sharin

Description

GND

4, 13, 19, 25, 36, 43,

48, 57

PWR

–

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

VC18

12, 31, 46, 63

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

3, 32

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

59, 58, 56, 55, 52,

51, 50, 49

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

59, 58, 56, 55, 52,

51, 50, 49

I/O

SmartMedia data or other peripheral data

P0.7 - P0.0

59, 58, 56, 55, 52,

51, 50, 49

I/O

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

output.

CLAD3 - 0

59, 58, 56, 55

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

52, 51, 50, 49

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

Slave 8-bit interface chip select, active low.

P0.11

General-purpose input pin

SYNC

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

ATSAM3108B Datasheet(PDF) 6 Page - ATMEL Corporation

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