MCP4725 Microchip Technology, MCP4725 Datasheet - Page 20

• Manufacturer Part Number: MCP4725
• Description: 12-Bit Digital-to-Analog Converter
• Manufacturer: Microchip Technology

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MCP4725
6.2
If the R/W bit is set to a logic “high”, then the device
outputs on SDA pin, the DAC register and EEPROM
data.
register and EEPROM data. The 2nd byte in
indicates the current condition of the device operation.
The RDY/BSY bit indicates EEPROM writing status.
The RDY/BSY bit stays low during EEPROM writng
and high when the writing is completed..
FIGURE 6-3:
DS22039C-page 20
Start Bit
Note 1: Bytes 2 - 6 are repeated in repeat bytes after byte 6.
Device Code Address Bits
Figure 6-3
Read Command
1
READ COMMAND
1
2: X is don’t care bit.
0
1st byte
0 A2 A1 A0 1
shows an example of reading the
Read Command and Output Data Format.
R/W
RDY/
BSY
(1: Completed, 0: Incomplete)
EEPROM Write Status Indicate Bit
POR
ACK (MCP4725)
Current Settings
in DAC Register
See Note 2
Figure 6-3
2nd byte
X X X PD1 PD0 X
X PD1 PD0 X D11 D10 D9 D8
D11 D10 D9 D8 D7 D6 D5 D4
5th byte
ACK (Master)
3rd byte
DAC register Data (12 bits)
EEPROM Data
D7 D6
© 2007 Microchip Technology Inc.
ACK (Master)
D5
D3 D2
D4
ACK (Master)
6th byte
D3 D2 D1 D0
D1
4th byte
D0
X X X X
Stop
Bit