ISL29043IROMZ-EVALZ データシートの表示（PDF） - Intersil

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ISL29043IROMZ-EVALZ

Low Power Ambient Light and Proximity Sensor with Internal IR-LED and Digital Output

Intersil 

ISL29043

I2C Electrical Specifications For SCL and SDA unless otherwise noted, VDD = 3V, TA = +25°C, REXT = 499kΩ 1% tolerance

(Note 11). (Continued)

PARAMETER

DESCRIPTION

CONDITION

MIN

MAX

(Note 7) TYP (Note 7) UNIT

tHD:STA

Hold Time (Repeated) START Condition

After this period, the first clock pulse is

600

ns

generated.

tLOW

LOW Period of the SCL Clock

Measured at the 30% of VDD crossing.

tHIGH

HIGH period of the SCL Clock

tSU:STA

Set-up Time for a Repeated START Condition

tHD:DAT

Data Hold Time

tSU:DAT

Data Set-up Time

tR

Rise Time of both SDA and SCL Signals

(Note 12)

tF

Fall Time of both SDA and SCL Signals

(Note 12)

tSU:STO

Set-up Time for STOP Condition

tBUF

Bus Free Time Between a STOP and START Condition

Cb

Capacitive Load for Each Bus Line

Rpull-up

SDA and SCL System Bus Pull-up Resistor

Maximum is determined by tR and tF

tVD;DAT

Data Valid Time

tVD:ACK

Data Valid Acknowledge Time

VnL

Noise Margin at the Low Level

VnH

Noise Margin at the High Level

NOTES:

11. All parameters in I2C Electrical Specifications table are guaranteed by design and simulation.

12. Cb is the capacitance of the bus in pF.

1300

600

600

30

100

20 + 0.1xCb

20 + 0.1xCb

600

1300

1

0.1VDD

0.2VDD

ns

ns

ns

ns

ns

ns

ns

ns

ns

400 pF

kΩ

0.9 µs

0.9 µs

V

V

FIGURE 3. I2C TIMING DIAGRAM

5

FN7935.0

February 9, 2012

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