MCP4021-202E/SN Microchip Technology, MCP4021-202E/SN Datasheet - Page 32

• Manufacturer Part Number: MCP4021-202E/SN
• Description: IC DGTL POT 2.1K 1CH 8SOIC
• Manufacturer: Microchip Technology

Specifications of MCP4021-202E/SN

• Memory Type: Non-Volatile
• Taps: 64
• Resistance (ohms): 2.1K
• Number Of Circuits: 1
• Temperature Coefficient: 150 ppm/°C Typical
• Interface: Up/Down
• Voltage - Supply: 2.7 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
• Resistance Tolerance: ± 20%
• No. Of Steps: 64
• Supply Voltage Range: 2.7V To 5.5V
• Control Interface: Serial
• No. Of Pots: Single
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: MCP4XXXDM-DB - BOARD DAUGHTER DIGIPOT MCP4XXXMCP402XEV - BOARD EVAL FOR MCP402X
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

MCP4021/2/3/4
5.2.3
This mode is achieved by initializing the U/D pin to a low
state (V
pin. Subsequent rising edges of the U/D pin will
decrement the wiper setting toward terminal B. This is
shown in
After the wiper is decremented to the desired position,
the U/D pin should be forced low (V
should be forced to V
“unexpected” transitions on the U/D pin do not cause
the wiper setting to decrement. Driving the CS pin to
V
specifications) after the last desired increment occurs.
FIGURE 5-3:
DS21945E-page 32
IH
should occur as soon as possible (within device
IL
WiperLock™ Technology
) prior to achieving a low state (V
Figure
DECREMENT WITHOUT WRITING
WIPER SETTING TO EEPROM
5-3.
EEPROM
Decrement without Writing Wiper Setting to EEPROM.
Wiper
IH
U/D
. This will ensure that
CS
Note: If WiperLock technology enabled, wiper will not change.
V
IL
IL
) and the CS pin
V
IL
IL
) on the CS
X
X
1
X-1
X
2
X-2
X
3
The EEPROM value has not been updated to this new
wiper value, so, if the device voltage is lowered below
the RAM retention voltage of the device, once the
device returns to the operating range, the wiper will be
loaded with the wiper setting in the EEPROM.
After the CS pin is driven to V
serial command may immediately be entered, since an
EEPROM write cycle (t
X-3
X
Note:
4
X-4
V
X
IH
The wiper value will not underflow. That is,
once the wiper value equals 0x00,
subsequent decrement commands are
ignored.
WiperLock Technology Enable
WiperLock Technology Disable
WC
© 2006 Microchip Technology Inc.
5
) is not started.
IH
6
(from V
V
IL
V
IH
), any other
IL