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SMM151 Scheda tecnica(PDF) 9 Page - Summit Microelectronics, Inc.

Il numero della parte SMM151
Spiegazioni elettronici  Single-channel Voltage/Current Monitors and Voltage Marginers
PDF  23 Pages
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Produttore elettronici  SUMMIT [Summit Microelectronics, Inc.]
Homepage  http://www.summitmicro.com
Logo SUMMIT - Summit Microelectronics, Inc.

SMM151 Scheda tecnica(HTML) 9 Page - Summit Microelectronics, Inc.

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SMM151/152
Preliminary Datasheet
Summit Microelectronics, Inc
2131 2.1 8/15/2008
9
I2C 2-WIRE SERIAL INTERFACE AC OPERATING CHARACTERISTICS – 100kHz
TA= 0°C to +70°C, VDD = 2.7V to 5.5V unless otherwise noted. All voltages are relative to GND. See Figure 3 Timing
Diagram.
Symbol
Description
Conditions
Min
Typ
Max
Units
fSCL
SCL Clock Frequency
0
100
KHz
tLOW
Clock Low Period
4.7
µs
tHIGH
Clock High Period
4.0
µs
tBUF
Bus Free Time
Before New Transmission – Note
5
4.7
µs
tSU:STA
Start Condition Setup Time
4.7
µs
tHD:STA
Start Condition Hold Time
4.0
µs
tSU:STO
Stop Condition Setup Time
4.7
µs
tAA
Clock Edge to Data Valid
SCL low to valid SDA (cycle n)
0.2
3.5
µs
tDH
Data Output Hold Time
SCL low (cycle n+1) to SDA
change
0.2
µs
tR
SCL and SDA Rise Time
Note 5
1000
ns
tF
SCL and SDA Fall Time
Note 5
300
ns
tSU:DAT
Data In Setup Time
250
ns
tHD:DAT
Data In Hold Time
0
ns
TI
Noise Filter SCL and SDA
Noise suppression
100
ns
tWR
Write Cycle Time
5
ms
Note 5: Guaranteed by Design.
TIMING DIAGRAMS
t
R
t
F
t
HIGH
t
LOW
t
SU:STA
t
HD:STA
t
SU:DAT
t
HD:DAT
t
SU:STO
t
BUF
t
DH
t
AA
SCL
SDA
(IN)
SDA
(OUT)
t
WR (For Write Operation Only)
Figure 3. Basic I
2C Serial Interface Timing



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