sx8744emstrt Semtech Corporation, sx8744emstrt Datasheet - Page 5

• Manufacturer Part Number: sx8744emstrt
• Description: Precision Diode Digital Temperature For Up To 3 External Sensors
• Manufacturer: Semtech Corporation

1.4. SMBus Timing Characteristics
1.5. SMBus Timing Waveforms
ACS Revision 2.91/February 2010
©2010 Semtech Corp.
ADVANCED COMMUNICATIONS & SENSING
1. The device provides a hold time of at least 300ns for the SMBDAT signal to bridge the undefined region of the falling edge of SMBCLK.
SMBus clock frequency
SMBus clock low time
SMBus clock high time
SMBus rise time
SMBus fall time
SMBDAT and SMBCLK time low
for reset of serial interface
Data setup time
Data hold time
Start condition hold time
(SMBDAT low to SMBCLK low)
Stop condition hold time
(SMBCLK high to SMBDAT high)
Repeated start-condition setup
time
(SMBCLK high to SMBDAT low)
SMBus free time between stop
and start conditions
SMBDAT
SMBCLK
Parameter
1
t
SU,STA
Start
t
HD,STA
t
Symbol
TIMEOUT
t
t
t
t
t
t
t
SU,DAT
HD,DAT
HD,STA
SU,STO
SU,STA
t
R,SMB
t
F,SMB
f
t
HIGH
LOW
SMB
BUF
Figure 1. SMBUS Timing
t
LOW
Page 5
Conditions
t
HIGH
SX8733/SX8743/SX8744
Precision Diode Digital Temperature
t
HD,DAT
For Up To 3 External Sensors
t
SU,DAT
Min
100
1.3
0.6
0.6
0.6
0.6
1.3
10
25
0
t
SU,STO
Typ
Stop
www.semtech.com
t
DATASHEET
BUF
Max
400
300
300
35
Unit
kHz
ms
us
us
ns
ns
ns
ns
us
us
us
us