EZR32LG330 Datasheet, PDF (55/87 Pages) Silicon Laboratories – Building and home automation

4.16 I2C
EZR32LG330 Data Sheet
Electrical Specifications
Table 4.21. I2C Standard-Mode (Sm)
Parameter
Symbol
Min
Typ
Max
Unit
SCL clock frequency
f_SCL
0
─
100 ¹
kHz
SCL clock low time
t_LOW
4.7
─
─
µs
SCL clock high time
t_HIGH
4.0
─
─
µs
SDA set-up time
t_SU,DAT
250
─
─
ns
SDA hold time
t_HD,DAT
8
─
3450^{2, 3}
ns
Repeated START condition set-up time
t_SU,STA
4.7
─
─
µs
(Repeated) START condition hold time
t_HD,STA
4.0
─
─
µs
STOP condition set-up time
t_SU,STO
4.0
─
─
µs
Bus free time between a STOP and a START
t_BUF
4.7
─
─
µs
condition
Note:
1. For the minimum HFPERCLK frequency required in Standard-mode, see the I2C chapter in the EZR32LG Reference Manual.
2. The maximum SDA hold time (t_HD,DAT) needs to be met only when the device does not stretch the low time of SCL (t_LOW).
3. When transmitting data, this number is guaranteed only when I2Cn_CLKDIV < ((3450 * 10^-9 [s] * f_HFPERCLK [Hz]) - 4).
Table 4.22. I2C Fast-Mode (Fm)
Parameter
Symbol
Min
Typ
Max
Unit
SCL clock frequency
f_SCL
0
─
400¹
kHz
SCL clock low time
t_LOW
1.3
─
─
µs
SCL clock high time
t_HIGH
0.6
─
─
µs
SDA set-up time
t_SU,DAT
100
─
─
ns
SDA hold time
t_HD,DAT
8
─
900^{2 , 3}
ns
Repeated START condition set-up time
t_SU,STA
0.6
─
─
µs
(Repeated) START condition hold time
t_HD,STA
0.6
─
─
µs
STOP condition set-up time
t_SU,STO
0.6
─
─
µs
Bus free time between a STOP and a START condi-
t_BUF
1.3
─
tion
─
µs
Note:
1. For the minimum HFPERCLK frequency required in Fast-mode, see the I2C chapter in the EZR32LG Reference Manual.
2. The maximum SDA hold time (t_HD,DAT) needs to be met only when the device does not stretch the low time of SCL (t_LOW).
3. When transmitting data, this number is guaranteed only when I2Cn_CLKDIV < ((900 * 10^-9 [s] * f_HFPERCLK [Hz]) - 4).
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