MCP4012 Microchip Technology Inc., MCP4012 Datasheet - Page 37

• Manufacturer Part Number: MCP4012
• Description: Low-cost 64-step Volatile Digital Pot
• Manufacturer: Microchip Technology Inc.

5.2.8
This mode is achieved by initializing the U/D pin to the
low state (V
Subsequent rising edges of the U/D pin decrement the
wiper setting toward terminal B. Set the U/D pin to a
high state (V
is shown in
FIGURE 5-8:
© 2006 Microchip Technology Inc.
Note:
HIGH-VOLTAGE DECREMENT 2
(FOR MCP402X COMPATIBILITY)
This command allows compatibility with
the MCP402X family, which supports
updating of the non-volatile wiper setting
with the WiperLock Technology feature.
Figure
IH
IL
) prior to driving the CS pin to V
) prior to forcing the CS pin to V
5-8.
Wiper
U/D
CS
High-Voltage Decrement 2 (For MCP402X Compatibility).
V
V
IH
IL
V
IHH
X
1
X-1
IH
2
. This
IHH
X-2
.
3
X-3
4
After the CS pin is driven to V
serial command may immediately be entered.
X-4
Note:
The wiper value will not underflow. That is,
once the wiper value equals 0x00,
subsequent decrement commands are
ignored.
V
DD
MCP4011/2/3/4
5
6
V
IH
V
IH
IH
(from V
DS21978C-page 37
IL
), any other