SAM4L_14 datasheet(49/176 Pages) ATMEL

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42023GS–SAM–03/2014

ATSAM4L8/L4/L2

6.2.2

Typical Powering Schematics

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

Figure 6-3.

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)

FCPUMAX

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 @ FCPU=12MHz(PS1) @ VVDDIN=3.3V

180µA/MHz @ FCPU=48MHz(PS2) @ VVDDIN=3.3V

212µA/MHz @ FCPU=12MHz(PS1)

306µA/MHz @ FCPU= 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)

SAM4L Datasheet(PDF) 49 Page - ATMEL Corporation

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