SAM4L_14 Datasheet, PDF (103/176 Pages) ATMEL Corporation – Technology for Ultra-low Power Consumption

ATSAM4L8/L4/L2
9.5 Power Consumption
9.5.1
Power Scaling 0 and 2
The values in Table 9-6 are measured values of power consumption under the following condi-
tions, except where noted:
• Operating conditions for power scaling mode 0 and 2
– V_VDDIN = 3.3 V
– Power Scaling mode 0 is used for CPU frequencies under 36MHz
– Power Scaling mode 2 is used for CPU frequencies above 36MHz
• Wake up time from low power modes is measured from the edge of the wakeup signal to the
first instruction fetched in flash.
• Oscillators
– OSC0 (crystal oscillator) stopped
– OSC32K (32kHz crystal oscillator) running with external 32kHz crystal
– DFLL using OSC32K as reference and running at 48MHz
• Clocks
– DFLL used as main clock source
– CPU, AHB clocks undivided
– APBC and APBD clocks divided by 4
– APBA and APBB bridges off
– The following peripheral clocks running
• PM, SCIF, AST, FLASHCALW, APBC and APBD bridges
– All other peripheral clocks stopped
• I/Os are inactive with internal pull-up
• CPU is running on flash with 1 wait state
• Low power cache enabled
• BOD18 and BOD33 disabled
Table 9-6.
Mode
RUN
ATSAM4L4/2 Current consumption and Wakeup time for power scaling mode 0 and 2
Conditions
Typical
T_A
Wakeup Time
Typ
Max ⁽¹⁾
CPU running a Fibonacci algorithm
25°C
N/A
Linear mode
85°C
296
326
300
332
CPU running a CoreMark algorithm
25°C
N/A
Linear mode
85°C
320
377
326
380
CPU running a Fibonacci algorithm
25°C
N/A
Switching mode
85°C
177
198
179
200
CPU running a CoreMark algorithm
25°C
N/A
Switching mode
85°C
186
232
195
239
Unit
µA/MHz
42023GS–SAM–03/2014
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