MIC280
Alert Response Address
DATA
0
R/W = READ
STOP
MIC280
MIC280 respond with
its slave address
1 A
1
0
NOT ACKNOWLEDGE
S 0 0 0 1
1
0
ACKNOWLEDGE
0
1 A2 A1 A0 0
/A
P
START
Event Occurs
/INT
t
INT
t
INT
Master-to-slave transmission
Slave-to-master response
Figure 4. MIC280 Alert Response Address Protocol
10
MIC280 Slave Address
S 1 0 0 1
A2 A1 A0
0 A
0
0
ACKNOWLEDGE
Command Byte = 03h
= CONFIG
0
0
0
0
1
1
A
1
MIC280 Slave Address
Value in STATUS**
DATA
START
R/W = READ
ACKNOWLEDGE
0 0 1 A2 A1 A0 1 X X X X X X X X /A P
NOT ACKNOWLEDGE
STOP
Event Occurs
/INT
** All status bits are cleared to zero following this operation
t
INT
t
INT
Master-to-slave transmission
Slave-to-master response
Figure 5. Reading Status in response to an interrupt
November 2004
Micrel
MICREL [ MICREL SEMICONDUCTOR ]
