EFM32HG321 Datasheet, PDF (50/70 Pages) Silicon Laboratories – Output state retention and wake-up from Shutoff Mode

Preliminary
Table 3.28. I2C Fast-mode (Fm)
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Symbol
f_SCL
Parameter
SCL clock frequency
Min
Typ
0
Max
Unit
400¹ kHz
t_LOW
SCL clock low time
1.3
µs
t_HIGH
SCL clock high time
0.6
µs
t_SU,DAT
t_HD,DAT
SDA set-up time
SDA hold time
100
ns
8
900^2,3 ns
t_SU,STA
Repeated START condition set-up time
0.6
µs
t_HD,STA
(Repeated) START condition hold time
0.6
µs
t_SU,STO
STOP condition set-up time
0.6
µs
t_BUF
Bus free time between a STOP and START condition
1.3
µs
1_{For the minimum HFPERCLK frequency required in Fast-mode, see the I2C chapter in the EFM32HG Reference Manual.}
2_{The maximum SDA hold time (tHD,DAT) needs to be met only when the device does not stretch the low time of SCL (tLOW).}
3_{When transmitting data, this number is guaranteed only when I2Cn_CLKDIV < ((900*10}-9 _{[s] * fHFPERCLK [Hz]) - 5).}
Table 3.29. I2C Fast-mode Plus (Fm+)
Symbol
Parameter
Min
Typ
Max
Unit
f_SCL
SCL clock frequency
0
1000¹ kHz
t_LOW
SCL clock low time
0.5
µs
t_HIGH
SCL clock high time
0.26
µs
t_SU,DAT
SDA set-up time
50
ns
t_HD,DAT
SDA hold time
8
ns
t_SU,STA
Repeated START condition set-up time
0.26
µs
t_HD,STA
(Repeated) START condition hold time
0.26
µs
t_SU,STO
STOP condition set-up time
0.26
µs
t_BUF
Bus free time between a STOP and START condition
0.5
µs
1_{For the minimum HFPERCLK frequency required in Fast-mode Plus, see the I2C chapter in the EFM32HG Reference Manual.}
3.15 USB
The USB hardware in the EFM32HG321 passes all tests for USB 2.0 Full Speed certification. The test
report will be distributed with application note "AN0046 - USB Hardware Design Guide" when ready.
3.16 Digital Peripherals
Table 3.30. Digital Peripherals
Symbol
I_USART
I_LEUART
I_I2C
I_TIMER
Parameter
USART current
LEUART current
I2C current
Condition
Min
USART idle current, clock en-
abled
LEUART idle current, clock en-
abled
I2C idle current, clock enabled
TIMER current
TIMER_0 idle current, clock
enabled
Typ
Max
7.5
150
6.25
8.75
Unit
µA/
MHz
nA
µA/
MHz
µA/
MHz
2015-05-06 - EFM32HG321FXX - _Rev0.91
50
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