MCP4023 Microchip Technology, MCP4023 Datasheet - Page 40

• Manufacturer Part Number: MCP4023
• Description: Low-Cost NV Digital POT with WiperLock Technology
• Manufacturer: Microchip Technology

MCP4021/2/3/4
5.2.11
This mode is achieved by initializing the U/D and CS
pins to a high state (V
to V
prior to forcing the CS pin to V
begins a write cycle and enables the WiperLock
Technology feature (See
FIGURE 5-11:
DS21945E-page 40
IHH
WiperLock™ Technology
(from V
WRITE WIPER SETTING TO
EEPROM AND ENABLE WiperLock
TECHNOLOGY
IH
). Set the U/D pin to a low state (V
IH
EEPROM
Write Wiper Setting to EEPROM and Enable WiperLock™ Technology.
) prior to the CS pin being driven
Figure
Wiper
U/D
CS
5-11).
IH
V
V
(from V
IH
IH
X
X+4
V
IHH
IHH
). This
IL
)
To ensure that “unexpected” transitions on the U/D pin
do not cause the wiper setting to increment, force the
CS pin to V
specifications) after the U/D pin is forced to V
After the CS pin is driven to V
serial commands are ignored until the EEPROM write
cycle (t
WC
) completes.
IH
t
WC
WiperLock Technology Enable
WiperLock Technology Disable
as soon as possible (within device
X+4
V
V
IH
IL
© 2006 Microchip Technology Inc.
IH
(from V
IHH
), all other
IL
.