Atmel ATSAM3U-EK Hoja De Datos

6478E–ATARM–30-Mar-11

The SAM3U-EK board jumpers are used for many purposes such as internal Flash Memory reinitializa-
tion, power current measurement and other configurations.

PC29

PWML0

MCDA5

AD5

MCDA5

SD/MMC

PC30

PWML1

MCDA6

AD6

MCDA6

SD/MMC

PC31

PWML2

MCDA7

AD7

MCDA7

SD/MMC

Table 4-7.  PIO Port C Assignment

Table 4-8.  Jumpers Setting

JP1

ERASE

Open

Close it to reinitialize the Flash content and 
some of its NVM bits. 

This jumper must be closed for more than 
220 ms at power-up to perform the re-
initialization.

JP2 (DNP)

TEST

Not populated (open)

reserved

JP3

VIN

Close

Measure current feed into VDDIN pin

JP5

AD12BVREF

Pin1 Pin2 close, 
Switch to +3V3

Select the reference voltage of the 12-bit 
ADC to be either 3.3V (close 1-2) or 2.5V 
(close 2-3)

JP6

VIO

Close

Measure current feed into VDDIO pins

JP7

VUTMI

Close

Measure current feed into VDDUTMI pin

JP8

VANA

Close

Measure current feed into VDDANA pin

JP9

VCORE

Close

Measure current feed into VDDCORE pins

JP10

VPLL

Close

Measure current feed into VDDPLL pin

JP11

VOUT

Close

Measure current out of VDDOUT pin

JP12

NCS0

Close

Disconnection possibility on NCS0

JP13

NCS1

Close

Disconnection possibility on NCS1

JP14

NCS2

Close

Disconnection possibility on NCS2

JP15

3AXS

Close

G-select feature, sensitivity level switch. 
Close as 440mv/g, open as 117.5mV/g

JP16

3AXS

Close

Open to cause a slight deflect on each axis 
output, which is device self test

JP17

FORCE POWER ON

Close

Force +3V3 LDO output valid

JP18 (DNP)

-

Not populated (open)

Close to enable 50-Ohm terminal resistor for 
AD12BAD3 BNC port

JP19 (DNP)

-

Not populated (open)

Close to enable 50-Ohm terminal resistor for 
AD0 BNC port

JP20

ADVREF

Pin1 Pin2 close, 
Switch to +3V3

Select the reference voltage of the 10-bit 
ADC to be either 3.3V (close 1-2) or 2.5V 
(close 2-3)

JP21

-

Open

Measure current feed into ZigBee module