Microchip Technology ADM00317 데이터 시트
© 2011-2012 Microchip Technology Inc.
DS22272C-page 53
MCP4706/4716/4726
6.4
Write Volatile Configuration Bits
(C2:C0 = 100)
(C2:C0 = 100)
This Write command is used to update the volatile
Configuration register bits only. This command is a
quick method to modify the configuration of the DAC,
such as the selection of the resistor ladder reference
voltage, the op amp gain, and the power-down state.
Configuration register bits only. This command is a
quick method to modify the configuration of the DAC,
such as the selection of the resistor ladder reference
voltage, the op amp gain, and the power-down state.
shows an example of this Write command.
FIGURE 6-4:
Write Volatile Configuration Bits Command.
Device Addressing
Note 1:
The device updates V
OUT
at the falling edge of the SCL at the end of this ACK pulse.
Note 1
2:
The 2nd byte can be repeated after the 2nd by continued clocking before issuing Stop bit.
Command
3:
ACK bit generated by MCP47X6.
Note 2
SDA
SCL
A2 A1 A0
1
1
0
0
0
0
1
0
PD1 PD0
G
0
Configuration bits
Start bit
ACK bit
(
3
)
Read/Write bit (Write)
Stop bit
S
A
R/W
A
bits
ACK bit
(
3
)
0
VREF1
VREF0
P