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AT73C239 Datasheet(PDF) 14 Page - ATMEL Corporation

Part # AT73C239
Description  Power Management and Analog Companions (PMAAC)
PDF  31 Pages
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT73C239 Datasheet(HTML) 14 Page - ATMEL Corporation

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14
6201C–PMAAC–31-Jul-07
AT73C239
The device acknowledges each received byte. The first byte sent after the device address and
the R/W bit, is the address of the device register the host wants to read or write.
For a write operation the data follows the internal address. For a read operation a repeated
START condition needs to be generated followed by a read on the device.
Figure 9-3.
Write Operation
Figure 9-4.
Read Operation
•S = Start
•P = Stop
•W = Write
• R = Read
• A = Acknowledge
• N = Not Acknowledge
• DADR= Device Address
• IADR = Internal Address
A
IADDR
A
P
DATA
A
S
ADDR
W
TWD
A
IADDR
A
S
ADDR
W
S
ADDR
R
A
DATA
NP
TWD



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