STDS75_08 Datasheet, PDF (31/37 Pages) STMicroelectronics – Digital temperature sensor and thermal watchdog

STDS75
Figure 16. Bus timing requirements sequence
SDA
tBUF
SCL
P
tHD:STA
tR
tF
tHIGH
S
tLOW
tSU:DAT
tHD:DAT
DC and AC parameters
tHD:STA
tSU:STA
SR
tSU:STO
P
AI00589
Table 14. AC characteristics
Sym
Parameter⁽¹⁾
Min Max Unit
f_SCL SCL clock frequency
t_BUF Time the bus must be free before a new transmission can start
t_F
SDA and SCL fall time
t_HD:DAT(2) Data hold time
t_HD:STA
START condition hold time (after this period the first clock pulse is
generated)
0 400 kHz
1.3
µs
300 ns
0
µs
600
ns
t_HIGH
t_LOW
t_R
t_SU:DAT
t_SU:STA
Clock high period
Clock low period
SDA and SCL rise time
Data setup time
START condition setup time (only relevant for a repeated start
condition)
600
ns
1.3
µs
300 ns
100
ns
600
ns
t_SU:STO STOP condition setup time
600
ns
1. Valid for ambient operating temperature: T_A = –55 to 125°C; V_DD = 2.7 V to 5.5 V (except where noted).
2. Transmitter must internally provide a hold time to bridge the undefined region (300 ns max) of the falling
edge of SCL.
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