STLM75 STMicroelectronics, STLM75 Datasheet - Page 31

• Manufacturer Part Number: STLM75
• Description: Digital Temperature Sensor And Thermal Watchdog
• Manufacturer: STMicroelectronics

Figure 16. Bus timing requirements sequence
Table 13.
1. Valid for Ambient Operating Temperature: T
2. Transmitter must internally provide a hold time to bridge the undefined region (300ns max) of the falling
3. For SMBus compatibility, the STLM75 supports bus time-out. Holding the SDA line low for a time greater
t
t
SDA
SCL
HD:DAT
TIME-OUT
t
t
t
t
SU:STO
HD:STA
SU:DAT
SU:STA
t
Sym
t
edge of SCL.
than time-out will cause the STLM75 to reset the SDA to the idle state of serial bus communication (SDA
set to high).
f
t
HIGH
LOW
BUF
SCL
t
t
F
R
tBUF
(2)
SCL Clock Frequency
Time the bus must be free before a new transmission can start
SDA and SCL Fall Time
Data Hold Time
START Condition Hold Time (after this period the first clock pulse is
generated)
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)
STOP Condition Setup Time
SDA Time Low for Reset of Serial Interface
P
AC characteristics
S
tHD:STA
tR
tLOW
tHIGH
Parameter
tF
A
= –55 to 125°C; V
(1)
tHD:DAT
(3)
tSU:DAT
DD
= 2.7V to 5.5V (except where noted).
SR
tSU:STA
tHD:STA
Min
600
600
100
600
600
1.3
1.3
75
0
0
P
AI00589
Max Unit
400
300
300
325
tSU:STO
31/37
kHz
ms
µs
ns
µs
ns
ns
µs
ns
ns
ns
ns