MAX7301(2003) Ver la hoja de datos (PDF) - Maxim Integrated
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Fabricante
MAX7301 Datasheet PDF : 18 Pages
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4-Wire-Interfaced, 2.5V to 5.5V, 20-Port and
28-Port I/O Expander
Table 3. Register Address Map
REGISTER
No-Op
Configuration
Transition Detect Mask
Factory Reserved. Do not write to this.
Port Configuration P7, P6, P5, P4
Port Configuration P11, P10, P9, P8
Port Configuration P15, P14, P13, P12
Port Configuration P19, P18, P17, P16
Port Configuration P23, P22, P21, P20
Port Configuration P27, P26, P25, P24
Port Configuration P31, P30, P29, P28
Port 0 only (virtual port, no action)
Port 1 only (virtual port, no action)
Port 2 only (virtual port, no action)
Port 3 only (virtual port, no action)
Port 4 only (data bit D0. D7–D1 read as 0)
Port 5 only (data bit D0. D7–D1 read as 0)
Port 6 only (data bit D0. D7–D1 read as 0)
Port 7 only (data bit D0. D7–D1 read as 0)
Port 8 only (data bit D0. D7–D1 read as 0)
Port 9 only (data bit D0. D7–D1 read as 0)
Port 10 only (data bit D0. D7–D1 read as 0)
Port 11 only (data bit D0. D7–D1 read as 0)
Port 12 only (data bit D0. D7–D1 read as 0)
Port 13 only (data bit D0. D7–D1 read as 0)
Port 14 only (data bit D0. D7–D1 read as 0)
Port 15 only (data bit D0. D7–D1 read as 0)
Port 16 only (data bit D0. D7–D1 read as 0)
Port 17 only (data bit D0. D7–D1 read as 0)
Port 18 only (data bit D0. D7–D1 read as 0)
Port 19 only (data bit D0. D7–D1 read as 0)
Port 20 only (data bit D0. D7–D1 read as 0)
Port 21 only (data bit D0. D7–D1 read as 0)
Port 22 only (data bit D0. D7–D1 read as 0)
Port 23 only (data bit D0. D7–D1 read as 0)
Port 24 only (data bit D0. D7–D1 read as 0)
Port 25 only (data bit D0. D7–D1 read as 0)
COMMAND ADDRESS
HEX
D15 D14 D13 D12 D11 D10 D9 D8 CODE
R/W
0
0
0
0
0
0
0 0x00
R/W
0
0
0
0
1
0
0 0x04
R/W
0
0
0
0
1
1
0 0x06
R/W
0
0
0
0
1
1
1 0x07
R/W
0
0
0
1
0
0
1 0x09
R/W
0
0
0
1
0
1
0 0x0A
R/W
0
0
0
1
0
1
1 0x0B
R/W
0
0
0
1
1
0
0 0x0C
R/W
0
0
0
1
1
0
1 0x0D
R/W
0
0
0
1
1
1
0 0x0E
R/W
0
0
0
1
1
1
1 0x0F
R/W
0
1
0
0
0
0
0 0x20
R/W
0
1
0
0
0
0
1 0x21
R/W
0
1
0
0
0
1
0 0x22
R/W
0
1
0
0
0
1
1 0x23
R/W
0
1
0
0
1
0
0 0x24
R/W
0
1
0
0
1
0
1 0x25
R/W
0
1
0
0
1
1
0 0x26
R/W
0
1
0
0
1
1
1 0x27
R/W
0
1
0
1
0
0
0 0x28
R/W
0
1
0
1
0
0
1 0x29
R/W
0
1
0
1
0
1
0 0x2A
R/W
0
1
0
1
0
1
1 0x2B
R/W
0
1
0
1
1
0
0 0x2C
R/W
0
1
0
1
1
0
1 0x2D
R/W
0
1
0
1
1
1
0 0x2E
R/W
0
1
0
1
1
1
1 0x2F
R/W
0
1
1
0
0
0
0 0x30
R/W
0
1
1
0
0
0
1 0x31
R/W
0
1
1
0
0
1
0 0x32
R/W
0
1
1
0
0
1
1 0x33
R/W
0
1
1
0
1
0
0 0x34
R/W
0
1
1
0
1
0
1 0x35
R/W
0
1
1
0
1
1
0 0x36
R/W
0
1
1
0
1
1
1 0x37
R/W
0
1
1
1
0
0
0 0x38
R/W
0
1
1
1
0
0
1 0x39
10 ______________________________________________________________________________________
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