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24LC41A-/P датащи(PDF) 11 Page - Microchip Technology

номер детали 24LC41A-/P
подробное описание детали  1K/4K 2.5V Dual Mode, Dual Port I2C??Serial EEPROM
PDF  18 Pages
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производитель  MICROCHIP [Microchip Technology]
домашняя страница  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

24LC41A-/P датащи(HTML) 11 Page - Microchip Technology

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 2003 Microchip Technology Inc.
DS21176D-page 11
24LC41A
5.0
ACKNOWLEDGE POLLING
Acknowledge polling can be done for both the DDC
Monitor Port (when in Bidirectional mode) and the
Microcontroller Access Port.
Since the port 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 but
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 (R/W=0). If the device is still busy
with the write cycle, then no ACK will be returned. 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 5-1 for the flow diagram.
FIGURE 5-1:
ACKNOWLEDGE
POLLING FLOW
Send
Write Command
Send Stop
Condition to
Initiate Write Cycle
Send Start
Send Control Byte
with R/W = 0
Did Device
Acknowledge
(ACK = 0)?
Next
Operation
NO
YES



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