TSL2550D(2002) データシートの表示（PDF） - TEXAS ADVANCED OPTOELECTRONIC SOLUTIONS

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TSL2550D
(Rev.:2002)

AMBIENT LIGHT SENSOR WITH SMBus INTERFACE

TEXAS ADVANCED OPTOELECTRONIC SOLUTIONS 

TSL2550

AMBIENT LIGHT SENSOR

WITH SMBus INTERFACE

TAOS029 – SEPTEMBER 2002

PARAMETER MEASUREMENT INFORMATION

SMBCLK

t(BUF)

SMBDATA

t(LOW)

t(R)

VIH

VIL

t(HDSTA)

t(HDDAT)

VIH

VIL

t(F)

t(HIGH) t(SUSTA)

t(SUDAT)

t(SUSTO)

P

S

S

P

Stop

Condition

Start

Condition

Start

Stop

t(LOWSEXT)

SMBCLKACK

SMBCLKACK

t(LOWMEXT)

t(LOWMEXT)

t(LOWMEXT)

SMBCLK

SMBDATA

Figure 1. SMBus Timing Diagrams

1

91

9

SMBCLK

SMBDATA

A6 A5 A4 A3 A2 A1 A0 R/W

D7 D6 D5 D4 D3 D2 D1 D0

Start by

Master

ACK by

TSL2550

Frame 1 SMBus Slave Address Byte

Frame 2 Command Byte

ACK by Stop by

TSL2550 Master

Figure 2. SMBus Timing Diagram for Send Byte Format

1

91

9

SMBCLK

SMBDATA

A6 A5 A4 A3 A2 A1 A0 R/W

D7 D6 D5 D4 D3 D2 D1 D0

Start by

Master

ACK by

TSL2550

Frame 1 SMBus Slave Address Byte

NACK by Stop by

Master Master

Frame 2 Data Byte From TSL2550

Figure 3. SMBus Timing Diagram for Receive Byte Format

The LUMENOLOGYr Company

t

t

www.taosinc.com

Copyright E 2002, TAOS Inc.

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