MAX7301AAI(2003) Ver la hoja de datos (PDF) - Maxim Integrated
Número de pieza
componentes Descripción
Fabricante
MAX7301AAI
(Rev.:2003)
(Rev.:2003)
Maxim Integrated
MAX7301AAI 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 (continued)
REGISTER
Port 26 only (data bit D0. D7–D1 read as 0)
Port 27 only (data bit D0. D7–D1 read as 0)
Port 28 only (data bit D0. D7–D1 read as 0)
Port 29 only (data bit D0. D7–D1 read as 0)
Port 30 only (data bit D0. D7–D1 read as 0)
Port 31 only (data bit D0. D7–D1 read as 0)
4 ports 4–7 (data bits D0–D3. D4–D7 read as 0)
5 ports 4–8 (data bits D0–D4. D5–D7 read as 0)
6 ports 4–9 (data bits D0–D5. D6–D7 read as 0)
7 ports 4–10 (data bits D0–D6. D7 reads as 0)
8 ports 4–11 (data bits D0–D7)
8 ports 5–12 (data bits D0–D7)
8 ports 6–13 (data bits D0–D7)
8 ports 7–14 (data bits D0–D7)
8 ports 8–15 (data bits D0–D7)
8 ports 9–16 (data bits D0–D7)
8 ports 10–17 (data bits D0–D7)
8 ports 11–18 (data bits D0–D7)
8 ports 12–19 (data bits D0–D7)
8 ports 13–20 (data bits D0–D7)
8 ports 14–21 (data bits D0–D7)
8 ports 15–22 (data bits D0–D7)
8 ports 16–23 (data bits D0–D7)
8 ports 17–24 (data bits D0–D7)
8 ports 18–25 (data bits D0–D7)
8 ports 19–26 (data bits D0–D7)
8 ports 20–27 (data bits D0–D7)
8 ports 21–28 (data bits D0–D7)
8 ports 22–29 (data bits D0–D7)
8 ports 23–30 (data bits D0–D7)
8 ports 24–31 (data bits D0–D7)
7 ports 25–31 (data bits D0–D6. D7 reads as 0)
6 ports 26–31 (data bits D0–D5. D6–D7 read as 0)
5 ports 27–31 (data bits D0–D4. D5–D7 read as 0)
4 ports 28–31 (data bits D0–D3. D4–D7 read as 0)
3 ports 29–31 (data bits D0–D2. D3–D7 read as 0)
2 ports 30–31 (data bits D0–D1. D2–D7 read as 0)
1 port 31 only (data bit D0. D1–D7 read as 0)
Note: Unused bits read as 0.
COMMAND ADDRESS
HEX
D15 D14 D13 D12 D11 D10 D9 D8 CODE
R/W
0
1
1
1
0
1
0 0x3A
R/W
0
1
1
1
0
1
1 0x3B
R/W
0
1
1
1
1
0
0 0x3C
R/W
0
1
1
1
1
0
1 0x3D
R/W
0
1
1
1
1
1
0 0x3E
R/W
0
1
1
1
1
1
1 0x3F
R/W
1
0
0
0
0
0
0 0x40
R/W
1
0
0
0
0
0
1 0x41
R/W
1
0
0
0
0
1
0 0x42
R/W
1
0
0
0
0
1
1 0x43
R/W
1
0
0
0
1
0
0 0x44
R/W
1
0
0
0
1
0
1 0x45
R/W
1
0
0
0
1
1
0 0x46
R/W
1
0
0
0
1
1
1 0x47
R/W
1
0
0
1
0
0
0 0x48
R/W
1
0
0
1
0
0
1 0x49
R/W
1
0
0
1
0
1
0 0x4A
R/W
1
0
0
1
0
1
1 0x4B
R/W
1
0
0
1
1
0
0 0x4C
R/W
1
0
0
1
1
0
1 0x4D
R/W
1
0
0
1
1
1
0 0x4E
R/W
1
0
0
1
1
1
1 0x4F
R/W
1
0
1
0
0
0
0 0x50
R/W
1
0
1
0
0
0
1 0x51
R/W
1
0
1
0
0
1
0 0x52
R/W
1
0
1
0
0
1
1 0x53
R/W
1
0
1
0
1
0
0 0x54
R/W
1
0
1
0
1
0
1 0x55
R/W
1
0
1
0
1
1
0 0x56
R/W
1
0
1
0
1
1
1 0x57
R/W
1
0
1
1
0
0
0 0x58
R/W
1
0
1
1
0
0
1 0x59
R/W
1
0
1
1
0
1
0 0x5A
R/W
1
0
1
1
0
1
1 0x5B
R/W
1
0
1
1
1
0
0 0x5C
R/W
1
0
1
1
1
0
1 0x5D
R/W
1
0
1
1
1
1
0 0x5E
R/W
1
0
1
1
1
1
1 0x5F
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