Data Sheet

4.3 MCU Current Consumption at 3.0V
Unless otherwise indicated, typical conditions are: VDD = 3.0 V. T
A
= 25 °C. Minimum and maximum values in this table represent the
worst conditions across process variation at T
A
= 25 °C.
Table 4.3. MCU Current Consumption at 3.0V
Parameter Symbol Test Condition Min Typ Max Unit
Current consumption in EM0
mode with all peripherals dis-
abled
1
I
ACTIVE
80 MHz HFRCO, CPU running
Prime from flash
— 50.9 — µA/MHz
80 MHz HFRCO, CPU running
while loop from flash
— 45.6 55.5 µA/MHz
80 MHz HFRCO, CPU running
CoreMark loop from flash
— 59.8 — µA/MHz
38.4 MHz crystal, CPU running
while loop from flash
— 63.8 — µA/MHz
Current consumption in EM1
mode with all peripherals dis-
abled
1
I
EM1
80 MHz HFRCO — 28.7 37.6 µA/MHz
38.4 MHz crystal — 46.9 — µA/MHz
Current consumption in EM2
mode
I
EM2
Full RAM retention and RTC run-
ning from LFXO (Bluetooth Stack
not running)
— 5.1 — µA
Full RAM retention, RTCC run-
ning, and Bluetooth Stack running
from LFXO
— 8.5 — µA
1 bank (16 kB) RAM retention and
RTC running from LFRCO
— 4.5 10.5 µA
Current consumption in EM3
mode
I
EM3
Full RAM retention and RTC run-
ning from ULFRCO
— 4.8 11.4 µA
1 bank (16 kB) RAM retention and
RTC running from ULFRCO
— 4.3 — µA
Current consumption in EM4
mode
I
EM4
No BURTC, no LF oscillator — 0.21 0.5 µA
Current consumption during
reset
I
RST
Hard pin reset held — 146 — µA
Current consumption per re-
tained 16kB RAM bank in
EM2
I
RAM
— 0.10 — µA
Note:
1. The typical EM0/EM1 current measurement includes some current consumed by the security core for periodical housekeeping
purposes. This does not include current consumed by user-triggered security operations, such as cryptographic calculations.
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