TCN75 データシートの表示（PDF） - Microchip Technology

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TCN75

2-Wire Serial Temperature Sensor and Thermal Monitor

Microchip Technology 

TCN75

TCN75 ELECTRICAL SPECIFICATIONS (CONTINUED)

Electrical Characteristics: 2.7V ≤ VDD ≤ 5.5V; -55°C ≤ (TA = TJ) ≤ 125°C, CL = 80 pF, unless otherwise noted.

Symbol Parameter

Min

Typ

Max

Unit

Test Conditions

Serial Port Timing

fSC

tLOW

tHIGH

tR

tF

tSU(START)

Serial Port Frequency

Low Clock Period

High Clock Period

SCL and SDA Rise Time

SCL and SDA Fall Time

Start Condition Setup Time (for

repeated Start Condition)

0

100

400

kHz

1250

—

—

nsec

1250

—

—

nsec

—

—

250

nsec

—

—

250

nsec

1250

—

—

nsec

tSC

SCL Clock Period

2.5

—

—

μsec

tH(START) Start Condition Hold Time

100

—

—

nsec

tDSU

Data in Setup Time to SCL High

100

—

—

nsec

tDH

Data in Hold Time after SCL Low

0

—

—

nsec

tSU(STOP) Stop Condition Setup Time

100

—

—

nsec

tIDLE

Bus Free Time Prior to New Transition 1250

—

—

nsec

Note 1: Output current should be minimized for best temperature accuracy. Power dissipation within the TCN75 will cause self-heating and

temperature drift. At maximum rated output current and saturation voltage, 4 mA and 0.8V, respectively, the error amounts to 0.544°C for

the SOIC.

2: All part types of the TCN75 will operate properly over the wider power supply range of 2.7V to 5.5V. Each part type is tested and specified

for rated accuracy at its nominal supply voltage. As VDD varies from the nominal value, accuracy will degrade 1°C/V of VDD change.

3: Human body model, 100 pF discharged through a 1.5k resistor.

TIMING DIAGRAM

tSC

SCL

SDA

Data In

SDA

Data Out

tH (Start)

tDSU

tDH

tSU (Stop)

DS21490C-page 4

© 2006 Microchip Technology Inc.

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