Default conditions, except where noted:
- Operating conditions
- Oscillators
- XOSC (crystal oscillator) stopped
- XOSC32K (32 kHz crystal oscillator) running with external 32kHz crystal
- OSC8M at 8MHz
- Clocks
- OSC8M used as main clock source
- CPU, AHB and APBn clocks undivided
- The following AHB module clocks are running: NVMCTRL, HPB2 bridge, HPB1 bridge, HPB0 bridge
- All other AHB clocks stopped
- The following peripheral clocks running: PM, SYSCTRL
- All other peripheral clocks stopped
- I/Os are inactive with internal pull-up
- CPU in IDLE0 mode
- Cache enabled
- BOD33 disabled
In this default conditions, the power consumption Idefault is measured.
Operating mode for each peripheral in turn:
- Configure and enable the peripheral GCLK (When relevant, see conditions)
- Unmask the peripheral clock
- Enable the peripheral (when relevant)
- Set CPU in IDLE0 mode
- Measurement Iperiph
- Wake-up CPU via EIC (async: level detection, filtering disabled)
- Disable the peripheral (when relevant)
- Mask the peripheral clock
- Disable the peripheral GCLK (when relevant, see conditions)
Each peripheral power consumption provided in table x.y is the value (Iperiph - Idefault), using the same measurement method as for global power consumption measurement
Table 1. Typical Peripheral Current Consumption| Peripheral |
Conditions |
Typ. |
Units |
| RTC |
fGCLK_RTC = 32kHz, 32bit counter mode |
7.4 |
μA |
| WDT |
fGCLK_WDT=32kHz, normal mode with EW |
5.5 |
μA |
| AC |
Both fGCLK=8MHz, Enable both COMP |
31.3 |
μA |
| TCx(1) |
fGCLK=8MHz, Enable + COUNTER in 8bit mode |
50 |
μA |
| TCC2 |
fGCLK=8MHz, Enable + COUNTER |
95.5 |
μA |
| TCC1 |
fGCLK=8MHz, Enable + COUNTER |
167.5 |
μA |
| TCC0 |
fGCLK=8MHz, Enable + COUNTER |
180.3 |
μA |
| SERCOMx.I2CM(2) |
fGCLK=8MHz, Enable |
69.7 |
μA |
| SERCOMx.I2CS |
fGCLK=8MHz, Enable |
29.2 |
μA |
| SERCOMx.SPI |
fGCLK=8MHz, Enable |
64.6 |
μA |
| SERCOMx.USART |
fGCLK=8MHz, Enable |
65.5 |
μA |
| I2S(3) |
fGCLK_I2S_0=12.288MHz with source FDPLL with fFDPLL=49,152MHz |
26.4 |
μA |
| DMAC(4) |
RAM to RAM transfer |
399.5 |
μA |
Note:
- All TCs from 4 to 7 share the same power consumption values.
- All SERCOMs from 0 to 5 share the same power consumption values.
- The
value includes the power consumption of the FDPLL.
- The value includes the power consumption of the R/W access to the RAM.