MCP23018 MICROCHIP [Microchip Technology], MCP23018 Datasheet - Page 11
![no-image](/images/no-image-200.jpg)
MCP23018
Manufacturer Part Number
MCP23018
Description
16-Bit I/O Expander with Open-Drain Outputs
Manufacturer
MICROCHIP [Microchip Technology]
Datasheet
1.MCP23018.pdf
(56 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MCP23018-E/MJ
Manufacturer:
Microchip
Quantity:
1 195
Part Number:
MCP23018-E/MJ
Manufacturer:
MICROCHIP/微芯
Quantity:
20 000
Company:
Part Number:
MCP23018-E/SO
Manufacturer:
Microchip
Quantity:
297
Company:
Part Number:
MCP23018-E/SP
Manufacturer:
Microchip
Quantity:
341
Company:
Part Number:
MCP23018-E/SS
Manufacturer:
Microchip
Quantity:
6 037
Company:
Part Number:
MCP23018T-E/MJ
Manufacturer:
MICROCHIP
Quantity:
12 000
Part Number:
MCP23018T-E/MJ
Manufacturer:
MICROCHIP/微芯
Quantity:
20 000
FIGURE 1-3:
© 2008 Microchip Technology Inc.
Assume:
n = A2, A1, A0 in opcode
ratio = R2/(R1+R2)
V2 = voltage on ADDR pin
V2(min) = V2 - (VDD/8) x %tolerance
V2(max) = V2 + (VDD/8) x %tolerance
n
n
n
n
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
VOLTAGE AND CODE EXAMPLE
R2=2n+1
R2=2n+1
R2=2n+1
R2=2n+1
11
13
15
11
13
15
11
13
15
11
13
15
1
3
5
7
9
1
3
5
7
9
1
3
5
7
9
1
3
5
7
9
R1=16-R2 R2/(R1+R2)
R1=16-R2 R2/(R1+R2)
R1=16-R2 R2/(R1+R2)
R1=16-R2
15
13
11
15
13
11
15
13
11
15
13
11
9
7
5
3
1
9
7
5
3
1
9
7
5
3
1
9
7
5
3
1
R2/(R1+R2)
0.0625
0.1875
0.3125
0.4375
0.5625
0.6875
0.8125
0.9375
0.0625
0.1875
0.3125
0.4375
0.5625
0.6875
0.8125
0.9375
0.0625
0.1875
0.3125
0.4375
0.5625
0.6875
0.8125
0.9375
0.0625
0.1875
0.3125
0.4375
0.5625
0.6875
0.8125
0.9375
VDD= 1.8
VDD= 2.7
VDD= 5.5
VDD= 3.3
MCP23018/MCP23S18
V2
V2
V2
V2
0.113
0.338
0.563
0.788
1.013
1.238
1.463
1.688
0.169
0.506
0.844
1.181
1.519
1.856
2.194
2.531
0.344
1.031
2.406
3.094
3.781
4.469
5.156
0.206
0.619
1.031
1.444
1.856
2.269
2.681
3.094
1.719
10% Tolerance (total)
10% Tolerance (total)
10% Tolerance (total)
V2(min)
V2(min)
V2(min)
10% Tolerance (total)
V2(min)
0.00
0.32
0.54
0.77
0.99
1.22
1.44
1.67
0.00
0.48
0.82
1.16
1.50
1.83
2.17
2.51
0.00
1.01
1.70
2.38
3.07
3.76
4.45
5.13
0.00
0.60
1.01
1.42
1.83
2.25
2.66
3.07
V2(max)
V2(max)
V2(max)
V2(max)
0.14
0.36
0.59
0.81
1.04
1.26
1.49
1.80
0.19
0.53
0.87
1.20
1.54
1.88
2.22
2.70
0.37
1.05
1.74
2.43
3.12
3.80
4.49
5.50
0.23
0.64
1.05
1.47
1.88
2.29
2.70
3.30
DS22103A-page 11