MCP4728T-E/UN Microchip Technology, MCP4728T-E/UN Datasheet - Page 37

• Manufacturer Part Number: MCP4728T-E/UN
• Description: Quad, 12-bit NV DAC With I2C Interface 10 MSOP 3x3mm T/R
• Manufacturer: Microchip Technology

Specifications of MCP4728T-E/UN

• Settling Time: 6µs
• Number Of Bits: 12
• Data Interface: I²C
• Number Of Converters: 4
• Voltage Supply Source: Single Supply
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 10-MSOP, Micro10™, 10-uMAX, 10-uSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: MCP4728EV - BOARD EVAL 12BIT 4CH DAC MCP4728
• Power Dissipation (max): -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

5.6.5
When the device receives this command, it updates the
DAC voltage reference selection bit (V
channel. The EEPROM data is not affected by this
command. The affected channel’s analog output is
updated after the acknowledge pulse of the last byte.
Figure 5-12
for Select V
5.6.6
When the device receives this command, it updates the
Power-Down selection bits (PD1, PD0) of each
channel. The EEPROM data is not affected by this
command. The affected channel is updated after the
acknowledge pulse of the last byte.
an example of the write command for the Select
Power-Down bits.
5.6.7
When the device receives this command, it updates the
gain selection bits (G
data is not affected by this command. The analog
output is updated after the acknowledge pulse of the
last byte.
command for select gain bits.
© 2010 Microchip Technology Inc.
Figure 5-14
REF
WRITE COMMAND: SELECT V
BIT (C2=1, C1=0, C0=0)
WRITE COMMAND: SELECT
POWER-DOWN BITS (C2=1, C1=0,
C0=1)
WRITE COMMAND: SELECT GAIN
BIT (C2=1, C1=1, C0=0)
shows an example of the write command
bits.
X
) of each channel. The EEPROM
shows an example of the write
Figure 5-13
REF
) of each
REF
shows
5.6.8
This command writes new I
A0) to the DAC input registers and EEPROM. When
the device receives this command, it overwrites the
current address bits with the new address bits.
This command is valid only when the LDAC pin makes
a transition from “High” to “Low” at the low time of the
last bit (8th clock) of the second byte, and stays “Low”
until the end of the third byte. The update occurs after
“Stop” bit, if the conditions are met. The LDAC pin is
used to select a device of interest to write. The highest
clock rate of this command is 400 kHz.
shows the details of the address write command.
5.6.9
If the R/W bit is set to a logic “High” in the I
communications command, the device enters a
reading mode and reads out the input registers and
EEPROM.
command.
Note:
Note:
Figure 5-15
WRITE COMMAND: WRITE I
ADDRESS BITS (C2=0, C1=1, C0=1)
To write a new device address, the current
address of the device is also required. If
the current address is not known, it can be
read out by sending General Call Read
Address
“General Call Read Address Bits”
more details of reading the I
bits.
READ COMMAND
The device address bits are read by using
General
command.
Bits
Call
shows the details of the read
2
command.
MCP4728
C address bits (A2, A1,
Read
DS22187E-page 37
Address
2
See
C address
Figure 5-11
2
2
C
C serial
5.4.4
Bits
for