Atmel SAM4L-EK Atmel ATSAM4L-EK ATSAM4L-EK Data Sheet

42023E–SAM–07/2013

The ATSAM4L8/L4/L2 supports the Single supply mode from 1.68V to 3.6V. Depending on the
input voltage range and on the final application frequency, it is recommended to use the follow-
ing table in order to choose the most efficient power strategy

Efficient power strategy:

N/A

Possible but 

not efficient

1.68V

1.80V

2.00V

2.30V

3.60V

Optimal power efficiency

Linear Mode

(BUCK/LDOn

(PA02) =0)

Optimal power efficiency

Possible but not efficient

Switching Mode

(BUCK/LDOn

(PA02) =1)

F

CPUMAX

12MHz

PowerScaling

PS1

(1)

Up to 36MHz In PS0

Up to 12MHz in PS1
Up to 48MHz in PS2

ALL

VDDIN Voltage

Typical power 

consumption in 

RUN mode

100µA/MHz @ F

CPU

=12MHz(PS1) @ V

VDDIN

=3.3V

180µA/MHz @ F

CPU

=48MHz(PS2) @ V

VDDIN

=3.3V

212µA/MHz @ F

CPU

=12MHz(PS1)

306µA/MHz @ F

CPU

= 48MHz(PS2)

Typical power 

consumption in 

RET mode

1.5µA

Note 1.  The SAM4L boots in PS0 on RCSYS(115kHz), then the application must switch to 
PS1 before running on higher frequency  (<12MHz)