EFM32WG332 Datasheet, PDF (53/76 Pages) Silicon Laboratories – Operation from backup battery when main power drains out

...the world's most energy friendly microcontrollers
Symbol
Parameter
Min
Typ
t_{SCLK_MI} ¹²
SCLK to MISO
-264 + t_HF-
PERCLK
1_{Applies for both CLKPHA = 0 and CLKPHA = 1 (figure only shows CLKPHA = 0)}
2_{Measurement done at 10% and 90% of VDD (figure shows 50% of VDD)}
3.17 Digital Peripherals
Max
Unit
-234 + 2 * ns
t_HFPERCLK
Table 3.27. Digital Peripherals
Symbol
I_USART
I_UART
I_LEUART
I_I2C
I_TIMER
I_LETIMER
I_PCNT
I_RTC
I_AES
I_GPIO
I_PRS
I_DMA
Parameter
USART current
UART current
LEUART current
I2C current
Condition
Min
USART idle current, clock en-
abled
UART idle current, clock en-
abled
LEUART idle current, clock en-
abled
I2C idle current, clock enabled
TIMER current
LETIMER current
PCNT current
RTC current
AES current
TIMER_0 idle current, clock
enabled
LETIMER idle current, clock
enabled
PCNT idle current, clock en-
abled
RTC idle current, clock enabled
AES idle current, clock enabled
GPIO current
PRS current
GPIO idle current, clock en-
abled
PRS idle current
DMA current
Clock enable
Typ
Max
4.0
3.8
194.0
7.6
6.5
85.8
91.4
54.6
1.8
3.4
3.9
10.9
Unit
µA/
MHz
µA/
MHz
nA
µA/
MHz
µA/
MHz
nA
nA
nA
µA/
MHz
µA/
MHz
µA/
MHz
µA/
MHz
2014-06-13 - EFM32WG332FXX - d0191_Rev1.40
53
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