9.3.4 Current Consumption Specifications

The values in this section are measured values of power consumption under the following conditions, except where noted:

Operating Conditions
- VDD = 3.3V
- Temperature at 25°C
- CPU is running on Flash with one Wait state in PL0 and two Wait states in PL2
- Low power cache is enabled
- BOD33 is disabled
- State of AT86RF212B is as specified in the following table
Oscillators
- XOSC (crystal oscillator) is disabled
- When MCU (ATSAML21) is in Active Performance Level 2 (PL2) mode, the DFLL48M is running at 48 MHz in Open-Loop mode
- When MCU is in Active Performance Level 0 (PL0) mode, the internal multi RC oscillator is running at 8 MHz
Clocks
- In the PL2 mode, DFLL48M is running in the Open-Loop mode and is used as main clock source
- In the PL0 mode, OSC16M is used at 8 MHz
- Clock masks and dividers are at Reset values: All AHB and APB clocks enabled, CPUDIV = 1, BUPDIV = 1 and LPDIV = 1
- I/Os are configured in the Digital Functionality Disabled mode. Except for PA24 and PA25, which are used to provide UART input to device

Table 9-7. Current Consumption under Different Conditions⁽¹⁾
Mode/Parameter	MCU Conditions	Transceiver Conditions	Measured Current (Typical)	Units
I_{BUSY_TX}	PL0	North American band, BPSK-40, f_RF = 914 MHz	—	mA
		TX_PWR setting = 11	26.97
		TX_PWR setting = 5	18.71
		TX_PWR setting = 0	14.5
		TX_PWR setting = -25	11.1
	PL2	North American band, BPSK-40, f_RF = 914 MHz	—
		TX_PWR setting = 11	32.74
		TX_PWR setting = 5	24.49
		TX_PWR setting = 0	20.29
		TX_PWR setting = -25	16.88
I_{RX_ON}	PL0	RX_PDT_LEVEL = 0x0; BPSK-20 f_RF = 868.3 MHz	10.79
I_{RX_ON}	PL2	RX_PDT_LEVEL = 0x0, BPSK-20, f_RF = 868.3 MHz	16.47
I_{PLL_ON}	PL0	PLL_ON	6.41
I_{PLL_ON}	PL2	PLL_ON	12.12
I_{TRX_OFF}	PL0	TRX_OFF	1.68
I_{TRX_OFF}	PL2	TRX_OFF	7.39
I_STANDBY	Standby; LPEFF Enable; PD0, PD1 and PD2 in Retention state with RTC running on OSCULP32K	Sleep	2.03	µA
I_BACKUP	Backup with RTC running on OSCULP32K	Sleep	0.77	µA

Note: