24LC00-/OT MICROCHIP [Microchip Technology], 24LC00-/OT Datasheet - Page 12

• Manufacturer Part Number: 24LC00-/OT
• Manufacturer: MICROCHIP [Microchip Technology]

24LCS61/24LCS62
7.0
Since the device will not acknowledge during a write
cycle, this can be used to determine when the cycle is
complete (this feature can be used to maximize bus
throughput). Once the Stop condition for a Write
command has been issued from the master, the device
initiates the internally timed write cycle. ACK polling
can be initiated immediately. This involves the master
sending a Start condition followed by the control byte
for a Write command and then sending the Device ID
byte for that particular device. If the device is still busy
with the write cycle, then no ACK will be returned after
the Device ID byte. If no ACK is returned, then the Start
bit, control byte and ID byte must be re-sent. If the cycle
is complete, then the device will return the ACK and the
master can then proceed with the next command. See
Figure 7-1 for flow diagram.
DS21226E-page 12
ACKNOWLEDGE POLLING
FIGURE 7-1:
Send Control byte and
Initiate Write Cycle
Device ID byte
Write Command
Acknowledge
Condition to
Send Stop
Send Start
(ACK = 0)?
Did Device
Device ID
Operation
ACKNOWLEDGE
POLLING FLOW
 2004 Microchip Technology Inc.
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