MCP4021-202E/SN Microchip Technology, MCP4021-202E/SN Datasheet - Page 30

• 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
5.2.1
This mode is achieved by initializing the U/D pin to a
high state (V
CS pin. Subsequent rising edges of the U/D pin
increment the wiper setting toward terminal A. This is
shown in
After the wiper is incremented to the desired position,
the CS pin should be forced to V
“unexpected” transitions (on the U/D pin do not cause
the wiper setting to increment. Driving the CS pin to V
should occur as soon as possible (within device
specifications) after the last desired increment occurs.
FIGURE 5-1:
DS21945E-page 30
WiperLock™ Technology
Figure
INCREMENT WITHOUT WRITING
WIPER SETTING TO EEPROM
IH
) prior to achieving a low state (V
5-1.
EEPROM
Increment without Writing Wiper Setting to EEPROM.
Wiper
U/D
CS
Note: If WiperLock technology enabled, wiper will not move.
IH
to ensure that
V
V
IL
IL
X
X
IL
1
) on the
X+1
X
IH
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. This is
since an EEPROM write cycle (t
X+3
X
Note:
4
X+4
X
The wiper value will not overflow. That is,
once the wiper value equals 0x3F,
subsequent increment commands are
ignored.
WiperLock Technology Enable
WiperLock Technology Disable
© 2006 Microchip Technology Inc.
5
IH
6
wc
(from V
) is not active.
V
V
IH
IH
IL
), any other