SMM151 查看數據表（PDF） - Summit Microelectronics

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SMM151

Single-channel Voltage/Current Monitors and Voltage Marginers

Summit Microelectronics 

SMM151/152

Preliminary Datasheet

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

tLOW

tHIGH

tBUF

tSU:STA

tHD:STA

tSU:STO

tAA

tDH

tR

tF

tSU:DAT

tHD:DAT

TI

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

Data Output Hold Time

SCL and SDA Rise Time

SCL and SDA Fall Time

Data In Setup Time

Data In Hold Time

Noise Filter SCL and SDA

Before New Transmission – Note

5

SCL low to valid SDA (cycle n)

SCL low (cycle n+1) to SDA

change

Note 5

Note 5

Noise suppression

0

100 KHz

4.7

µs

4.0

µs

4.7

µs

4.7

µs

4.0

µs

4.7

µs

0.2

3.5

µs

0.2

µs

1000 ns

300

ns

250

ns

0

ns

100

ns

tWR

Write Cycle Time

5

ms

Note 5: Guaranteed by Design.

TIMING DIAGRAMS

tR

SCL

tSU:STA

SDA (IN)

SDA (OUT)

tF

tHD:STA

tAA

tHIGH

tHD:DAT

tLOW

tSU:DAT

tDH

tSU:STO

Figure 3. Basic I2C Serial Interface Timing

tWR (For Write Operation Only)

tBUF

Summit Microelectronics, Inc

2131 2.1 8/15/2008

9

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