Datasheet

MCP4706/4716/4726

6.4 Write Volatile Configuration Bits

(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.

Figure 6-4 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

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 A01100 0010 PD1 PD0 G 0

Configuration bits

Start bit ACK bit

(3)

Read/Write bit (Write)

Stop bit

AR/W A

bits

ACK bit

(3)

VREF1 VREF0