EFM32GG890 Datasheet, PDF (51/81 Pages) Silicon Laboratories – Read-while-write support

Figure 3.34. SPI Slave Timing
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CS
SCLK
CLKPOL = 0
SCLK
CLKPOL = 1
MOSI
MISO
t _{CS_ACT_MI}
t _{SU_MO}
t _{H_MO}
t _{SCLK_HI}
t _{SCLK_LO}
t _SCLK
t _{SCLK_MI}
t _{CS_DIS_MI}
Table 3.30. SPI Slave Timing
Symbol
Parameter
Min
Typ
t_{SCLK_sl} ^{1 2}
SCKL period
2 * t_HFPER-
CLK
t_{SCLK_hi} ^{1 2}
SCLK high period
3 * t_HFPER-
CLK
t_{SCLK_lo} ^{1 2}
SCLK low period
3 * t_HFPER-
CLK
t_{CS_ACT_MI} ^{1 2}
CS active to MISO
4.00
t_{CS_DIS_MI} ^{1 2}
CS disable to MISO
4.00
t_{SU_MO} ^{1 2}
MOSI setup time
4.00
t_{H_MO} ^{1 2}
MOSI hold time
2 + 2* t_HF-
PERCLK
t_{SCLK_MI} ^{1 2}
SCLK to MISO
9 + t_HFPER-
CLK
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
ns
30.00 ns
30.00 ns
ns
ns
36 + 2*t_HF- ns
PERCLK
Table 3.31. Digital Peripherals
Symbol
I_USART
I_UART
I_LEUART
I_I2C
I_TIMER
I_LETIMER
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
TIMER_0 idle current, clock
enabled
LETIMER idle current, clock
enabled
Typ
Max
4.9
3.4
140
6.1
6.9
119
Unit
µA/
MHz
µA/
MHz
nA
µA/
MHz
µA/
MHz
nA
2014-05-23 - EFM32GG890FXX - d0043_Rev1.30
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