MCP4728 datasheet(39/66 Pages) MICROCHIP

Part #	MCP4728

Description	12-Bit, Quad Digital-to-Analog Converter with EEPROM Memory

PDF	66 Pages

Scroll/Zoom	100%

Manufacturer	MICROCHIP [Microchip Technology]

Direct Link	http://www.microchip.com

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39 / 66 page

DS22187C-page 39

MCP4728

FIGURE 5-8:

Multi-Write Command: Write Multiple DAC Input Registers.

2nd Byte

(C2 C1 C0 W1 W2)

3rd Byte

4th Byte

DAC1 DAC0 UDAC AVREF PD1 PD0 Gx D11 D10 D9 D8 A D7D6D5D4D3D2D1D0 A

ACK

(MCP4728)

1st byte

DAC Input Register of Selected Channel

R/W

Device Addressing

ACK

(MCP4728)

Repeat Bytes of the 2nd - 4th Bytes

Start

Stop

Multi-Write

A2A1A0

Command

Note 1:

VOUT Update:

If UDAC = 0 or LDAC Pin = 0: V

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

2: The user can write to the other channels by sending repeated bytes with new channel

selection bits (DAC1, DAC0).

3: X is don’t care bit.

Command Type Bits:

C2=0

C1=1

C0=0

W1=0

W0=0

Channel

Select

X DAC1 DAC0 UDAC AVREF PD1 PD0 Gx D11 D10 D9 D8 A D7D6D5D4D3D2D1D0 A

ACK

(MCP4728)

DAC Input Register of Selected Channel

Note 3

2nd byte

3rd Byte

4th Byte

Repeat Bytes of the 2nd - 4th Bytes

Note 1

Note 2

Channel

Select

MCP4728 Datasheet(PDF) 39 Page - Microchip Technology

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