SX8723 Ver la hoja de datos (PDF) - Semtech Corporation
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SX8723 Datasheet PDF : 53 Pages
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SX8723
ZoomingADC™ for Pressure and Temperature Sensing
ADVANCED COMMUNICATIONS & SENSING
Timing Characteristics
Parameter
Symbol Comments / Conditions
Min
Typ
Max
Unit
Interrupt (Ready) timing specification
READY pulse width (2)
tIRQ
1
1/FS
I2C timing specifications(1)
SCL clock frequency
fSCL
0
400
kHz
SCL low period
tLOW
1.3
µs
SCL high period
tHIGH
0.6
µs
Data setup time
tSU;DAT
100
ns
Data hold time
tHD;DAT
0
ns
Repeated start setup time
tSU;STA
0.6
µs
Start condition hold time
tHD;STA
0.6
µs
Stop condition hold time
tSU;STO
0.6
µs
Bus free time between stop and start tBUF
1.3
µs
Input glitch suppression
tSP
50
ns
Notes:
(1) All timing specifications are referred to VILmin and VIHmax voltage levels defined for the SCL and SDA pins.
(2) The READY pulse indicates End of Conversion. This is a Low going pulse of duration equal to one cycle of the ADC sampling rate.
I2C Timing Waveforms
SDA
SCL
SDA
tSU;STA tHD;STA
tSU;STO tBUF
Figure 1 - I2C Start and Stop timings
SCL
tLOW
tHIGH
tSU;DAT tHD;DAT tSP
Figure 2 - I2C Data timings
V1.5 © 2007 Semtech Corp.
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