Microchip Technology MCP4728EV Data Sheet
© 2010 Microchip Technology Inc.
DS22187E-page 41
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 A V
REF
PD1 PD0 Gx D11 D10 D9 D8 A D7 D6 D5 D4 D3 D2 D1 D0 A
P
ACK
(MCP4728)
1st byte
DAC Input Register of Selected Channel
R/W
Device Addressing
ACK
(MCP4728)
Start
Single Write
S
1
1
0
0
A2 A1 A0
0
A
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