MCP4024 MICROCHIP [Microchip Technology], MCP4024 Datasheet - Page 26
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MCP4024
Manufacturer Part Number
MCP4024
Description
Manufacturer
MICROCHIP [Microchip Technology]
Datasheet
1.MCP4024.pdf
(64 pages)
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MCP4021/2/3/4
3.6
The CS pin is the chip select input. Forcing the CS pin
to V
can increment and decrement the wiper. Depending on
the command, the wiper may (or may not) be saved to
non-volatile memeory (EEPROM). Forcing the CS pin
to V
These commands can increment and decrement the
wiper and enable or disable the WiperLock technology.
The wiper is saved to non-volatile memory (EEPROM).
The CS pin has an internal pull-up resistor. The resistor
will become “disabled” when the voltage on the CS pin
is below the V
is “floating”, the CS pin will be pulled to the V
(serial communication (the U/D pin) is ignored). And
when the CS pin is driven low (V
becomes very large to reduce the device current
consumption when serial commands are occurring.
See
DS21945E-page 26
IL
IHH
Figure 2-4
enables the serial commands. These commands
Chip Select (CS)
enables the high-voltage serial commands.
IH
for additional information.
level. This means that when the CS pin
IL
), the resistance
IH
level
3.7
The U/D pin input is used to increment or decrement
the wiper on the digital potentiometer. An increment
moves the wiper one step toward terminal A, while a
decrement moves the wiper one step toward
terminal B.
Increment/Decrement (U/D)
© 2006 Microchip Technology Inc.