MAX7323 Maxim, MAX7323 Datasheet - Page 11

• Manufacturer Part Number: MAX7323
• Description: The MAX7323 2-wire serial-interfaced peripheral features eight I/O ports
• Manufacturer: Maxim

Figure 5. Slave Address
Figure 6. Reading the MAX7323 (1 Data Byte)
Figure 7. Reading the MAX7323 (2 Data Bytes)
.
SDA
SCL
t
IV
PORTS
INT OUTPUT
t
IV
SCL
I
MSB
S
1
2
PORT I/O
INT OUTPUT
C Port Expander with 4 Push-Pull Outputs
S
1
SCL
______________________________________________________________________________________
1
1
0
1
1
MAX7321 SLAVE ADDRESS
0
MAX7321 SLAVE ADDRESS
R/W
0
1
A
t
IR
t
PH
PORT SNAPSHOT
O7
D7
A3
R/W
INT REMAINS HIGH UNTIL STOP CONDITION
O6
D6
1
P5
D5
P4
PORT I/O
A
D4
A2
t
IR
t
PH
P3
PORT SNAPSHOT
P7
D3
D7
PORT SNAPSHOT
P2
and 4 Open-Drain I/Os
D2
P6
INT REMAINS HIGH UNTIL STOP CONDITION
D6
O1
D1
P5
A1
O0
t
PSU
D5
D0
P4
PORT I/O
A
DATA
D4
0
P3
D7
D3
LSB
A0
0
D6
S = START CONDITION
P = STOP CONDITION
SHADED = SLAVE TRANSMISSION
A = ACKNOWLEDGE
N = NOT ACKNOWLEDGE
P2
D2
F5
INTERRUPT FLAGS
D5
PORT SNAPSHOT
P1
F4
D4
D1
F3
R/W
P0
D3
D0
PORT SNAPSHOT
F2
D2
t
PSU
N
0
D1 D0
0
ACK
P
t
IP
N
t
P
IP
11