MCP23S18T-E/SO Microchip Technology, MCP23S18T-E/SO Datasheet - Page 11

• Manufacturer Part Number: MCP23S18T-E/SO
• Description: 16-bit Input/Output Expander, I2C Interface, Pb-free 28 SOIC .300in T/R
• Manufacturer: Microchip Technology

Specifications of MCP23S18T-E/SO

• Interface: SPI
• Number Of I /o: 16
• Interrupt Output: Yes
• Frequency - Clock: 10MHz
• Voltage - Supply: 1.8 V ~ 5.5 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 28-SOIC (7.5mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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