Datasheet

Figure 7. Reading the MAX7323 (2 Data Bytes)
SCL
MAX7321 SLAVE ADDRESSS 1 1 0
A
P
1
PORTS
INT OUTPUT
R/W
PORT SNAPSHOT
t
IV
t
PH
t
IR
AD0D1D2D3D4D5D6D7
PORT SNAPSHOT
t
PSU
t
IP
D7 D6 D5 D4 D3 D2 D1 D0 N
PORT SNAPSHOT
INT REMAINS HIGH UNTIL STOP CONDITION
S = START CONDITION
P = STOP CONDITION
SHADED = SLAVE TRANSMISSION
A = ACKNOWLEDGE
N = NOT ACKNOWLEDGE
O0
O1
P2P3P4P5
O6
O7
0
0
F2F3F4F5
0
0
PORT I/O INTERRUPT FLAGS
Figure 6. Reading the MAX7323 (1 Data Byte)
SCL
MAX7321 SLAVE ADDRESS
S 1 1 0 A
P
1
PORT I/O
t
IV
N
P0
P1
P2P3P4P5
P6
P7
D0D1D2D3D4D5D6D7
PORT I/O
INT OUTPUT
R/W
PORT SNAPSHOT
t
PH
t
IR
PORT SNAPSHOT
t
PSU
t
IP
INT REMAINS HIGH UNTIL STOP CONDITION
DATA
Figure 5. Slave Address
SDA
SCL
1 1
A3
A2 A1 A0
0
R/W
MSB
LSB
ACK
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Maxim Integrated │ 11
MAX7323 I
2
C Port Expander with 4 Push-Pull
Outputs and 4 Open-Drain I/Os