MCP9800 View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

MCP9800

2-Wire High-Accuracy Temperature Sensor

Microchip Technology 

MCP9800/1/2/3

SERIAL INTERFACE TIMING SPECIFICATIONS

Electrical Specifications: Unless otherwise indicated, VDD = 2.7V to 5.5V, GND = Ground, -55°C < TA < +125°C,

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

Parameters

Sym

Min Typ Max Units

Conditions

2-Wire I2C™/SMBus Compatible Interface

Serial Port Frequency

fSC

0

—

400 kHz I2C MCP9800/01

fSC

10

— 400 kHz SMBus MCP9802/03

Clock Period

tSC

2.5

—

—

µs

Low Clock

tLOW

1.3

—

—

µs

High Clock

tHIGH

0.6

—

—

µs

Rise Time

tR

20

—

300

ns 10% to 90% of VDD (SCLK, SDA)

Fall Time

tF

20

—

300

ns 90% to 10% of VDD (SCLK, SDA)

Data Setup Before SCLK High tSU-DATA 0.1

—

—

µs

Data Hold After SCLK Low

tH-DATA

0

—

0.9

µs

Start Condition Setup Time

tSU-START 0.6

—

—

µs

Start Condition Hold Time

tH-START

0.6

—

—

µs

Stop Condition Setup Time

tSU-STOP

0.6

—

—

µs

Bus Idle

tIDLE

1.3

—

—

µs

Time Out

tOUT

25

35

50 ms MCP9802/03 only

Timing Diagram

t SU-STAtRHT-START

SCL

t HIGH

t LOW

t SU-STOPt B-FREE

SDA

Start Condition

t SU-DATA

t H-DATA

t

,

R

t

F

Data Transmission

Stop Condition

 2010 Microchip Technology Inc.

DS21909D-page 5

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