Datasheet

49
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)
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)