MCP9805-BESLASHST datasheet(4/34 Pages) MICROCHIP

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MCP9805

DS21977B-page 4

Timing Diagram

SERIAL INTERFACE TIMING CHARACTERISTICS

Electrical Specifications: Unless otherwise indicated, VDD = 3.0V to 3.6V, GND = Ground, TA = -20°C to +125°C,

CL = 80 pF and all limits measured to 50% point.

Parameters

Sym

Min

Typ

Max

Units

Conditions

2-Wire SMBus/Standard Mode I2C™ Compatible Interface (Note)

Serial Port Clock Frequency

fSC

—

100

kHz

Low Clock

tLOW

4.7

—

µs

High Clock

tHIGH

4.0

—

µs

Rise Time

—

1000

(VIL MAX - 0.15V) to (VIH MIN + 0.15V)

Fall Time

—

300

(VIH MIN + 0.15V) to (VIL MAX - 0.15V)

Data Setup Before SCLK High

tSU-DATA

250

—

Data Hold After SCLK Low

tHD-DATA

300

—

Start Condition Setup Time

tSU-START

4.7

—

µs

Start Condition Hold Time

tHD-START

4.0

—

µs

Stop Condition Setup Time

tSU-STOP

4.0

—

µs

Bus Free

tB-FREE

4.7

—

µs

Time Out

tOUT

Note:

The serial interface specification min./max. limits are specified by characterization (not production tested).

tSU-START

tH-START

tSU-DATA

tSU-STOP

tB-FREE

SCLK

SDA

tH-DATA

tHIGH

tLOW

tOUT

tR, tF

START Condition

Data Transmission

STOP Condition

TEMPERATURE CHARACTERISTICS

Electrical Specifications: Unless otherwise indicated, VDD = 3.0V to 3.6V, GND = Ground.

Parameters

Sym

Min

Typ

Max

Units

Conditions

Temperature Ranges

Specified Temperature Range

-20

—

+125

°C

Operating Temperature Range

-40

—

+125

°C

Note 1

Storage Temperature Range

-65

—

+150

°C

Thermal Package Resistances

Thermal Resistance, 8L-DFN

θJA

—41

—

°C/W

Thermal Resistance, 8L-TSSOP

θJA

—

123.7

—

°C/W

Note 1:

Operation in this range must not cause TJ to exceed Maximum Junction Temperature (+150°C).

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