EFM32WG880 Datasheet, PDF (57/85 Pages) Silicon Laboratories – Operation from backup battery when main power drains out

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Symbol
Parameter
Min
Typ
t_{SCLK_hi} ¹²
SCLK high period
3 * t_HFPER-
CLK
t_{SCLK_lo} ¹²
SCLK low period
3 * t_HFPER-
CLK
t_{CS_ACT_MI} ¹²
CS active to MISO
5.00
t_{CS_DIS_MI} ¹²
CS disable to MISO
5.00
t_{SU_MO} ¹²
MOSI setup time
5.00
t_{H_MO} ¹²
MOSI hold time
2 + 2 * t_HF-
PERCLK
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)}
3.19 Digital Peripherals
Max
Unit
ns
ns
35.00 ns
35.00 ns
ns
ns
-234 + 2 * ns
t_HFPERCLK
Table 3.33. Digital Peripherals
Symbol
I_USART
I_UART
I_LEUART
I_I2C
I_TIMER
I_LETIMER
I_PCNT
I_RTC
I_LCD
I_AES
I_GPIO
I_EBI
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
LCD 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
LCD idle current, clock enabled
AES idle current, clock enabled
GPIO current
EBI current
GPIO idle current, clock en-
abled
EBI idle current, clock enabled
PRS current
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
72.7
1.8
3.4
6.5
3.9
10.9
Unit
µA/
MHz
µA/
MHz
nA
µA/
MHz
µA/
MHz
nA
nA
nA
nA
µA/
MHz
µA/
MHz
µA/
MHz
µA/
MHz
µA/
MHz
2014-06-13 - EFM32WG880FXX - d0197_Rev1.40
57
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