MCP4024 MICROCHIP [Microchip Technology], MCP4024 Datasheet - Page 37

• Manufacturer Part Number: MCP4024
• Manufacturer: MICROCHIP [Microchip Technology]

5.2.8
This mode is achieved by initializing the U/D pin to a
low state (V
Subsequent rising edges of the U/D pin decrement the
wiper setting toward terminal B. Set the U/D pin to the
low state (V
begins a write cycle and disables the WiperLock
Technology feature (See
FIGURE 5-8:
© 2006 Microchip Technology Inc.
WiperLock™ Technology
HIGH-VOLTAGE DECREMENT AND
DISABLE WiperLock TECHNOLOGY
IL
IL
) prior to the CS pin being driven to V
) prior to forcing the CS pin to V
EEPROM
High-Voltage Decrement and Disable WiperLock™ Technology.
Figure
Wiper
U/D
CS
5-8).
V
V
IH
IL
V
X
IHH
X
1
IH
. This
X-1
X
IHH
.
2
X-2
X
3
After the CS pin is driven to V
serial commands are ignored until the EEPROM write
cycle (t
X-3
X
Note:
4
WC
X-4
X
) completes.
The wiper value will not underflow. That is,
once the wiper value equals 0x00,
subsequent decrement commands are
ignored.
t
WC
WiperLock Technology Enable
WiperLock Technology Disable
MCP4021/2/3/4
X-4
5
IH
6
(from V
V
IH
DS21945E-page 37
V
IHH
V
IH
IL
), all other