24C01C MicrochipTechnology, 24C01C Datasheet - Page 8
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24C01C
Manufacturer Part Number
24C01C
Description
1K5.0VI2CSerialEEPROM
Manufacturer
MicrochipTechnology
Datasheet
1.24C01C.pdf
(12 pages)
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24C01C
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 com-
mand has been issued from the master, the device ini-
tiates the internally timed write cycle. ACK polling can
be initiated immediately. This involves the master send-
ing a start condition followed by the control byte for a
write command (R/W = 0). If the device is still busy with
the write cycle, then no ACK will be returned. If no ACK
is returned, then the start bit and control 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 read or write command. See Figure 7-1 for flow
diagram.
DS21201A-page 8
ACKNOWLEDGE POLLING
Preliminary
FIGURE 7-1:
Initiate Write Cycle
Send Control Byte
ACKNOWLEDGE POLLING
FLOW
Write Command
with R/W = 0
Acknowledge
Condition to
Send Stop
(ACK = 0)?
Did Device
Send Start
Operation
Send
Next
1997 Microchip Technology Inc.
YES
NO