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MAX7300ATL+

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20
MAX7300
2-Wire-Interfaced, 2.5V to 5.5V, 20-Port or
28-Port I/O Expander
16 ______________________________________________________________________________________
Table 7. Configuration Register Format
REGISTER DATA
FUNCTION
ADDRESS CODE
(HEX)
D7 D6 D5 D4 D3 D2 D1 D0
Configuration Register 0x04 M 0 XXXXXS
Table 8. Shutdown Control (S Data Bit D0) Format
REGISTER DATA
FUNCTION
ADDRESS CODE
(HEX)
D7 D6 D5 D4 D3 D2 D1 D0
Shutdown 0x04 M 0 XXXXX0
Normal Operation 0x04 M 0 XXXXX1
Table 9. Transition Detection Control (M Data Bit D7) Format
REGISTER DATA
FUNCTION
ADDRESS CODE
(HEX)
D7 D6 D5 D4 D3 D2 D1 D0
Disabled 0x04 0 0 XXXXXS
Enabled 0x04 1 0 XXXXXS
Table 10. Transition Detection Mask Register
REGISTER DATA
FUNCTION
REGISTER
ADDRESS
(HEX)
READ/
WRITE
D7 D6 D5 D4 D3 D2 D1 D0
Read INT Status*
Mask
Register
0x06
Write Unchanged
Port
30
mask
Port
29
mask
Port
28
mask
Port
27
mask
Port
26
mask
Port
25
mask
Port
24
mask
*
INT is automatically cleared after it is read.
MAX7300
2-Wire-Interfaced, 2.5V to 5.5V, 20-Port or
28-Port I/O Expander
______________________________________________________________________________________ 17
GPIO INPUT
CONDITIONING
P31
P30
P29
P28
P27
P26
P25
P24
GPIO/PORT OUTPUT LATCH
GPIO INPUT
CONDITIONING
GPIO/PORT OUTPUT LATCH
GPIO INPUT
CONDITIONING
GPIO/PORT OUTPUT LATCH
GPIO INPUT
CONDITIONING
GPIO/PORT OUTPUT LATCH
GPIO INPUT
CONDITIONING
GPIO/PORT OUTPUT LATCH
GPIO INPUT
CONDITIONING
GPIO/PORT OUTPUT LATCH
GPIO INPUT
CONDITIONING
GPIO/PORT OUTPUT LATCH
D Q
D Q
D Q
D Q
D Q
D Q
D Q
CLOCK PULSE WHEN WRITING CONFIGURATION REGISTER WITH M BIT SET
OR
CONFIGURATION REGISTER M BIT = 1
R
S
GPIO IN
GPIO/PORT OUT
CLOCK PULSE AFTER EACH READ ACCESS TO MASK REGISTER
INT STATUS STORED AS MSB OF MASK REGISTER
MASK REGISTER BIT 6
MASK REGISTER BIT 5
MASK REGISTER BIT 4
MASK REGISTER BIT 3
MASK REGISTER BIT 2
MASK REGISTER BIT 1
MASK REGISTER LSB
GPIO IN
GPIO/PORT OUT
GPIO IN
GPIO/PORT OUT
GPIO IN
GPIO/PORT OUT
GPIO IN
GPIO/PORT OUT
GPIO IN
GPIO/PORT OUT
GPIO IN
GPIO/PORT OUT
GPIO IN
GPIO/PORT OUT
GPIO INPUT
CONDITIONING
GPIO/PORT
OUTPUT LATCH
INT
OUTPUT LATCH
Figure 10. Maskable GPIO Ports P24 to P31
MAX7300
2-Wire-Interfaced, 2.5V to 5.5V, 20-Port or
28-Port I/O Expander
18 ______________________________________________________________________________________
TOP VIEW
36
35
34
33
32
31
30
29
28
27
26
25
24
23
1
2
3
4
5
6
7
8
9
10
11
12
13
14
V+
AD1
SCL
SDA
P4
P31
P26
P5
P30
P6
P29
P7
P28
P27
P17
P16
P15
P11
P14
P10
P13
P9
P12
P8
AD0
GND
GND
ISET
36 SSOP
MAX7300
22
21
20
19
15
16
17
18 P22
P25
P24
P23
P21
P20
P19
P18
MAX7300
MAX7300
P4
P31
P30
P6
P28
P27
P26
P29
P7
P5
P9
P13
P10
P14
P11
P15
P16
P17
P12
P8
1
2
3
4
5
6
7
8
9
10
30
29
28
27
26
25
24
23
22
21
P21
P22
P23
P25
N.C.
P20
P19
P18
N.C.
11
12
13
14
15
16
17
18
19
20
40
39
38
37
36
35
34
33
32
31
GND
GND
GND
ISET
V+
AD1
SCL
SDA
N.C.
AD0
40 TQFN-EP
P24
28
27
26
25
24
23
22
GND
GND
ISET
V+
AD1
SCL
SDA
8
9
10
11
12
13
14
P18
P19
P20
P21
P22
P23
P24
15
16
17
18
19
20
21
P25
P26
P27
P28
P29
P30
P31
7
6
5
4
3
2
1
P17
P16
P15
P14
P13
P12
ADO
28 TQFN-EP
TOP VIEW
Pin Configurations (continued)
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20

MAX7300ATL+

Mfr. #:
Buy MAX7300ATL+
Manufacturer:
Maxim Integrated
Description:
Interface - I/O Expanders 2.5-5.5V 20/28 Port I/O Expander
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
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