MCP4728EV Microchip Technology, MCP4728EV Datasheet - Page 28

• Manufacturer Part Number: MCP4728EV
• Description: BOARD EVAL 12BIT 4CH DAC MCP4728
• Manufacturer: Microchip Technology
• Type: D/Ar

Specifications of MCP4728EV

• Number Of Dac's: 4
• Number Of Bits: 12
• Outputs And Type: 1, Single Ended
• Data Interface: I²C
• Settling Time: 6µs
• Dac Type: Voltage
• Voltage Supply Source: Single
• Operating Temperature: -40°C ~ 125°C
• Utilized Ic / Part: MCP4728
• Product: Data Conversion Development Tools
• Resolution: 12 bit
• Interface Type: I2C
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 2.7 V
• Silicon Manufacturer: Microchip
• Silicon Core Number: MCP4728
• Kit Application Type: Data Converter
• Application Sub Type: DAC
• Kit Contents: Board
• For Use With/related Products: MCP4728
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

MCP4728 Evaluation Board User’s Guide
FIGURE 1-16:
a Single Write Command. The Channel A output is updated immediately with the ACK Pulse. This example
uses UDAC Bit, instead of using LDAC pin, to update the DAC output.
DS51837A-page 24
1.3.2.10
This command writes to a single DAC input register and its EEPROM. Both input
register and EEPROM are written at the acknowledge pulse of the input data byte. The
EEPROM program activity can be monitored through the RDY/BSY bit and pin. See the
MCP4728 data sheet for details.
Figure 1-16 shows an example of writing a script file. In this example, the PICkit Serial
Analyzer sends a single write command to the MCP4728 for the DAC A (Channel A)
input register.
.
Writing Script File to Write the Channel A Register and its EEPROM with FFFh Using
• Parameters in the Script Detail column:
Note:
1.
2.
3.
I2CWRTBYT
I2CSTART
Script Detail
I2CSTOP
04
C0
58
0F
FF
To change value:
To delete or Insert box:
Make sure the listed
parameters in “script
Detail” are in the exact
order as shown here.
• Click this box and
• Select the box and
EXAMPLE 5: SINGLE WRITE COMMAND FOR DAC INPUT REGISTER
AND EEPROM
type a new value
right click the mouse
button for options
available
All parameters above must be listed in order. The parameter above with *
are not modifiable. The MCP4728 device on the evaluation board has I
address bits (A2, A1, A0) = (0,0,0).
-------> This means there are four bytes to send.
-------> Command Type and selection of Channel A.
-------> Address byte = 1100-0000 (See Note).
-------> Configuration register bits and data nibble for Channel A.
-------> Data byte for Channel A (register and its EEPROM).
*
*
*
© 2009 Microchip Technology Inc.
2
C