MCP4725 Microchip Technology, MCP4725 Datasheet - Page 23

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

www.DataSheet4U.com
7.5.5
Each receiving device, when addressed, is obliged to
generate an acknowledge after the reception of each
byte. The master device must generate an extra clock
pulse which is associated with this acknowledge bit.
The device that acknowledges, has to pull down the
SDA line during the acknowledge clock pulse in such a
way that the SDA line is stable LOW during the HIGH
period of the acknowledge related clock pulse. Of
FIGURE 7-3:
© 2007 Microchip Technology Inc.
SDA
SCL
(A)
ACKNOWLEDGE
CONDITION
START
(B)
Data Transfer Sequence On The Serial Bus.
ACKNOWLEDGE
ADDRESS OR
VALID
(D)
TO CHANGE
ALLOWED
DATA
course, setup and hold times must be taken into
account. During reads, a master must send an end of
data to the slave by not generating an acknowledge bit
on the last byte that has been clocked out of the slave.
In this case, the slave (MCP4725) will leave the data
line HIGH to enable the master to generate the STOP
condition.
(D)
MCP4725
DS22039C-page 23
CONDITION
STOP
(C)
(A)