Datasheet

TMP100−EP
DIGITAL TEMPERATURE SENSOR
WITH I
2
C INTERFACE
SGLS254B − JULY 2005 − REVISED OCTOBER 2013
15
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
APPLICATION INFORMATION
Start By
Master
Frame 1 I
2
C Slave Address Byte Frame 2 Pointer Register Byte
Frame 3 I
2
C Slave Address Byte Frame 4 Data Byte 1 Read Register
Frame 5 Data Byte 2 Read Register
SCL
SDA
191 9
0R/W1 0 0 1 A2 A1 A0 0 0 0 0 0 P1 P0
ACK By
TMP100 or TMP101
ACK By
TMP100 or TMP101
SCL
(Continued)
SDA
(Continued)
191 9
Start By
Master
ACK By
TMP100 or TMP101
ACK By
Master
From
TMP100 or TMP101
A211 0 0 A1A0 D7D6D5D4D3D2D1D0
SCL
(Continued)
SDA
(Continued)
19
D7 D6 D5 D4 D3 D2 D1 D0
ACK By
Master
From
TMP100 or TMP101
Stop By
Master
R/W
Figure 6. I
2
C Timing Diagram for Read Word Format
Frame 1 SMBus ALERT Response Address Byte Frame 2 Slave Address From TMP100
SCL
SDA
ALERT
91 9
Start By
Master
ACK By
TMP100 or TMP101
NACK By
Master
From
TMP100 or TMP101
Stop By
Master
A20 0 0 1 1 0 0 R/W
110 0 A1 A0
Status
1
Figure 7. Timing Diagram for SMBus ALERT