SMM150ER03 データシートの表示（PDF） - Summit Microelectronics
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SMM150ER03 Datasheet PDF : 22 Pages
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SMM150
Preliminary Information
I2C 2-WIRE SERIAL INTERFACE AC OPERATING CHARACTERISTICS – 100kHz
Over recommended operating conditions, unless otherwise noted. All voltages are relative to GND. See Figure 3 Timing Diagram.
Symbol
fSCL
tLOW
tHIGH
tBUF
tSU:STA
tHD:STA
tSU:STO
tAA
Description
SCL Clock Frequency
Clock Low Period
Clock High Period
Bus Free Time
Start Condition Setup Time
Start Condition Hold Time
Stop Condition Setup Time
Clock Edge to Data Valid
tDH
Data Output Hold Time
tR
tF
tSU:DAT
tHD:DAT
TI
SCL and SDA Rise Time
SCL and SDA Fall Time
Data In Setup Time
Data In Hold Time
Noise Filter SCL and SDA
tWR
Write Cycle Time
Note: 1/ - Guaranteed by Design.
Conditions
Min Typ Max Units
0
100 KHz
4.7
4.0
Before New Transmission - Note 1/
4.7
4.7
4.0
4.7
SCL low to valid SDA (cycle n) 0.2
SCL low (cycle n+1) to SDA
change
0.2
µs
µs
µs
µs
µs
µs
3.5 µs
µs
Note 1/
1000 ns
Note 1/
300 ns
250
ns
0
ns
Noise suppression
100
ns
5
ms
TIMING DIAGRAMS
tR
SCL
tSU:SDA
SDA (IN)
SDA (OUT)
tF
tHD:SDA
tAA
tH IG H
tHD:DAT
tLOW
tSU:DAT
tDH
tSU:STO
Figure 3. Basic I2C Serial Interface Timing
tW R (For W rite O peration Only)
tBUF
Summit Microelectronics, Inc
2075 2.6 05/13/05
7
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