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MCP4531 Datasheet(PDF) 33 Page - Microchip Technology

Part # MCP4531
Description  7/8-Bit Single/Dual I2C Digital POT with Volatile Memory
PDF  102 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

MCP4531 Datasheet(HTML) 33 Page - Microchip Technology

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 2008-2013 Microchip Technology Inc.
DS22096B-page 33
MCP453X/455X/463X/465X
3.0
PIN DESCRIPTIONS
The descriptions of the pins are listed in Table 3-1.
Additional descriptions of the device pins follows.
TABLE 3-1:
PINOUT DESCRIPTION FOR THE MCP453X/455X/463X/465X
Pin
Weak
Pull-up/
down
(1)
Standard Function
Single
Dual
Symbol
I/O
Buffer
Type
Rheo Pot
(1)
Rheo
Pot
8L
8L
10L
14L
16L
1
1
1
1
16
HVC/A0
I
HV w/ST
“smart”
High Voltage Command /
Address 0
2
2
2
2
1
SCL
I
HV w/ST
No
I2C clock input
3
3
3
3
2
SDA
I/O
HV w/ST
No
I2C serial data I/O. Open Drain
output
44
4
4
3, 4
VSS
—
P
—
Ground
—
—
5
5
5
P1B
A
Analog
No
Potentiometer 1 Terminal B
—
—
6
6
6
P1W
A
Analog
No
Potentiometer 1 Wiper Terminal
—
—
—
7
7
P1A
A
Analog
No
Potentiometer 1 Terminal A
—
5
—
8
8
P0A
A
Analog
No
Potentiometer 0 Terminal A
5
6
7
9
9
P0W
A
Analog
No
Potentiometer 0 Wiper Terminal
6
7
8
10
10
P0B
A
Analog
No
Potentiometer 0 Terminal B
—
—
—
11
11, 12
NC
—
—
—
No Connection
—
—
—
12
13
A2
I
HV w/ST
“smart”
Address 2
7
—
9
13
14
A1
I
HV w/ST
“smart”
Address 1
8
8
10
14
15
VDD
—
P
—
Positive Power Supply Input
9
9
11
—
17
EP
—
—
—
Exposed Pad (Note 2)
Legend: HV w/ST = High Voltage tolerant input (with Schmidtt trigger input)
A = Analog pins (Potentiometer terminals) I = digital input (high Z)
O = digital output
I/O = Input / Output
P = Power
Note 1:
The pin’s “smart” pull-up shuts off while the pin is forced low. This is done to reduce the standby and shut-
down current.
2:
The DFN and QFN packages have a contact on the bottom of the package. This contact is conductively
connected to the die substrate, and therefore should be unconnected or connected to the same ground as
the device’s VSS pin.



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