Datasheet

MCP4728

FIGURE 5-10: Single Write Command: Write to a Single DAC Input Register and EEPROM.

2nd Byte

C2 C1 C0 W1 W0 3rd Byte 4th Byte

0 1 0 1 1 DAC1 DAC0 UDAC

REF

PD1 PD0 Gx D11 D10 D9 D8 A D7D6D5D4D3D2D1D0 A P

ACK (MCP4728)

1st byte

DAC Input Register of Selected Channel

R/W

Device Addressing

ACK (MCP4728)

Start

Single Write

S1100A2A1A00A

Command

Command Type Bits: C2=0 C1=1 C0=0 W1=1 W0=1

Channel

Select

Note 1 and Note 2

Note 1: V

OUT

Update:

If UDAC

= 0 or LDAC Pin = 0: V

OUT

is updated after the 4th byte’s ACK is issued.

2: EEPROM Write:

The MCP4728 device starts writing EEPROM at the falling edge of the 4th byte’s ACK pulse.

Stop