MCP4023 Microchip Technology, MCP4023 Datasheet - Page 39

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

5.2.10
This mode is achieved by keeping the U/D pin static
(either at V
V
edge of the CS pin occurs (from V
value is written to EEPROM and the WiperLock
Technology is disabled (See
FIGURE 5-10:
© 2006 Microchip Technology Inc.
IH
to V
WiperLock™ Technology
IHH
IL
WRITE WIPER SETTING TO
EEPROM AND DISABLE WiperLock
TECHNOLOGY
and then returned to V
or at V
IH
EEPROM
), while the CS pin is driven from
Write Wiper Setting to EEPROM and Disable WiperLock™ Technology.
Wiper
U/D
CS
Figure
IHH
V
IH
5-10).
IH
. When the falling
to V
X
X+4
V
IH
IHH
), the wiper
To ensure that “unexpected” transitions on the U/D pin
do not cause the wiper setting to change, force the CS
pin to V
specifications) after the CS pin is forced to V
After the CS pin is driven to V
serial commands are ignored until the EEPROM write
cycle (t
WC
IH
) completes.
as soon as possible (within device
t
WC
MCP4021/2/3/4
WiperLock Technology Enable
WiperLock Technology Disable
X+4
V
V
V
IH
IH
IL
IH
(from V
DS21945E-page 39
IHH
), all other
IHH
.