MCP4011-202E/SN Microchip Technology, MCP4011-202E/SN Datasheet - Page 29

• Manufacturer Part Number: MCP4011-202E/SN
• Description: IC DGTL POT 2.1K 1CH 8SOIC
• Manufacturer: Microchip Technology

Specifications of MCP4011-202E/SN

• Taps: 64
• Resistance (ohms): 2.1K
• Number Of Circuits: 1
• Temperature Coefficient: 150 ppm/°C Typical
• Memory Type: Volatile
• Interface: Up/Down
• Voltage - Supply: 1.8 V ~ 5.5 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Resistance In Ohms: 2.10K
• End To End Resistance: 2.1kohm
• No. Of Steps: 64
• Resistance Tolerance: ± 20%
• Supply Voltage Range: 1.8V To 5.5V
• Control Interface: Increment Decrement
• No. Of Pots: Single
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

5.0
5.1
The MCP4011/2/3/4 utilizes a simple 2-wire interface to
increment or decrement the digital potentiometer’s
wiper terminal (W). This interface uses the CS and U/D
pins. The CS pin is the Chip Select input, while the U/D
pin is the Up/Down input.
The Increment/Decrement protocol enables the device
to move one step at a time through the range of
possible resistance values. The wiper value is
initialized with the “default” value upon power-up.
A wiper value of 00h connects the wiper to terminal B.
A wiper value of 3Fh connects the wiper to terminal A.
Increment commands move the wiper toward terminal
A, but will not increment to a value greater than 3Fh.
Decrement commands move the wiper toward terminal
B, but will not decrement below 00h.
Refer to Section 1.0 “Electrical Characteristics”,
AC/DC Electrical Characteristics table for detailed input
threshold and timing specifications.
Communication is unidirectional. Therefore, the value
of the current wiper setting cannot be read out of the
MCP401X device.
TABLE 5-1:
© 2006 Microchip Technology Inc.
Increment
Increment (for MCP402X Compatibility)
Decrement
Decrement (for MCP402X Compatibility)
High-Voltage Increment 1 (for MCP402X Compatibility)
High-Voltage Increment 2 (for MCP402X Compatibility)
High-Voltage Decrement 1 (for MCP402X Compatibility)
High-Voltage Decrement 2 (for MCP402X Compatibility)
SERIAL INTERFACE
Overview
COMMANDS
Command Name
5.2
The MCP401X devices support eight serial commands.
Six of these commands are for support and to ease
migration with the MCP402X family of devices. The
commands can be grouped into the following types:
• Serial Commands
• High-voltage Serial Commands
All the commands are shown in
The command type is determined by the voltage level
the CS pin is driven to. The initial state that the CS pin
must be driven is V
CS pin can be driven are:
• V
• V
If the CS pin is driven from V
command is selected. If the CS pin is driven from V
V
Support of the high-voltage serial commands is for
compatiblity with the MCP402X devices.
IHH
IL
IHH
, a high-voltage serial command is selected.
Serial Commands
MCP4011/2/3/4
IH
. From V
IH
, the two levels that the
Table
IH
DS21978C-page 29
to
5-1.
High Voltage
on CS pin?
V
IL
, a serial
Yes
Yes
Yes
Yes
—
—
—
—
IH
to