SAM4L_14 Datasheet, PDF (49/176 Pages) ATMEL Corporation – Technology for Ultra-low Power Consumption

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:
1.68V 1.80V
VDDIN Voltage
2.00V
2.30V
3.60V
Switching Mode
(BUCK/LDOn
(PA02) =1)
N/A
Possible but
not efficient
Optimal power efficiency
Linear Mode
(BUCK/LDOn
(PA02) =0)
Optimal power efficiency
Possible but not efficient
F_CPUMAX
12MHz
PowerScaling PS1⁽¹⁾
Up to 36MHz In PS0
Up to 12MHz in PS1
Up to 48MHz in PS2
ALL
Typical power
consumption in
RUN mode
212µA/MHz @ FCPU=12MHz(PS1)
306µA/MHz @ FCPU= 48MHz(PS2)
100µA/MHz @ FCPU=12MHz(PS1) @ VVDDIN=3.3V
180µA/MHz @ FCPU=48MHz(PS2) @ VVDDIN=3.3V
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)
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42023GS–SAM–03/2014