TC665TEUN View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

TC665TEUN

SMBus™ PWM Fan Speed Controllers With Fan Fault Detection

Microchip Technology 

TC664/TC665

SMBus Write Timing Diagram

A

B

C

D

EE F

G

tLOW tHIGH

SCLK

SDA

H

IJ

K

LM

tSU(START) tH(START)

tSU-DATA

tH-DATA

A = Start Condition

B = MSB of Address Clocked into Slave

C = LSB of Address Clocked into Slave

D = R/W Bit Clocked into Slave

E = Slave Pulls SDA Line Low

F = Acknowledge Bit Clocked into Master

G = MSB of Data Clocked into Slave

H = LSB of Data Clocked into Slave

I = Slave Pulls SDA Line Low

tSU(STOP)tIDLE

J = Acknowledge Clocked into Master

K = Acknowledge Clock Pulse

L = Stop Condition, Data Executed by Slave

M = New Start Condition

SMBus Read Timing Diagram

A

B

C

D

EF

G

tLOW tHIGH

SCLK

SDA

H

I

J

K

tSU(START) tH(START)

tSU-DATA

A = Start Condition

B = MSB of Address Clocked into Slave

C = LSB of Address Clocked into Slave

D = R/W Bit Clocked into Slave

E = Slave Pulls SDA Line Low

F = Acknowledge Bit Clocked into Master

G = MSB of Data Clocked into Master

H = LSB of Data Clocked into Master

FIGURE 1-1:

Bus Timing Data.

tSU(STOP)

tIDLE

I = Acknowledge Clock Pulse

J = Stop Condition

K = New Start Condition

 2002-2013 Microchip Technology Inc.

DS21737B-page 5

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