MCP4725EV Microchip Technology, MCP4725EV Datasheet - Page 18

• Manufacturer Part Number: MCP4725EV
• Description: BOARD EVAL FOR MCP4725
• Manufacturer: Microchip Technology

Specifications of MCP4725EV

• Number Of Dac's: 1
• Number Of Bits: 12
• Outputs And Type: 1, Single Ended
• Sampling Rate (per Second): 100k ~ 3.4M
• Data Interface: I²C
• Settling Time: 6µs
• Dac Type: Voltage
• Voltage Supply Source: Single
• Operating Temperature: -40°C ~ 125°C
• Utilized Ic / Part: MCP4725
• Processor To Be Evaluated: MCP4725
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

MCP4725
TABLE 6-2:
Note 1:
FIGURE 6-1:
DS22039C-page 18
C2 C1 C0
0
0
0
0
1
1
1
1
Change DAC Code in Fast Mode: (C2,C1) = (0,0)
Start Bit
Note 1: A2 and A1 bits are programmed at the factory by hard-wired, and A0 bit is determined by the logic state
2:
0
0
1
1
0
0
1
1
1
Device Code
2: The device updates V
X = Dont’ Care. Fast Mode does not use C0 bit.
The MCP4725 ignores the “Reserved” commands.
X
X
1st byte (Device Addressing)
0
1
0
1
0
1
1
of A0 pin.
0
Write DAC Register
Write DAC Register
WRITE COMMAND TYPE
Command Name
0 A2
Fast Mode
Write Command for Fast Mode.
EEPROM
Reserved
Reserved
Reserved
Reserved
see Note 1
Address
and
A1 A0
Bits
“
0
R/W
OUT
ACK (MCP4725)
Read/Write Command
0
at the falling edge of the ACK pulse of the 3rd byte.
0
This command is used to change the DAC register. EEPROM is not affected
0 PD1 PD0 D11
0 PD1 PD0 D11
Fast Mode Command (C2, C1 = 0, 0)
(a) Load configuration bits and data code to the DAC Register
Load configuration bits and data code to the DAC Register
2nd byte
Repeat bytes of 2nd and 3rd bytes
2nd byte
Power Down Select
D10 D9
D10 D9
DAC Register Data (12 bits)
ACK (MCP4725)
(b) also write the EEPROM
D8
Reserved for future use
Reserved for future use
Reserved for future use
Reserved for future use
D8
ACK (MCP4725)
D7 D6 D5 D4 D3
D7 D6 D5 D4 D3
and
Function
“
3rd byte
© 2007 Microchip Technology Inc.
3rd byte
D2 D1
D2 D1
ACK (MCP4725)
ACK (MCP4725)
D0
D0
see Note 2
see Note 2
Stop Bit
Stop Bit