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AT90USB646 Datasheet(PDF) 228 Page - ATMEL Corporation

Part # AT90USB646
Description  8-bit Atmel Microcontroller with 64/128Kbytes of ISP Flash and USB Controller
PDF  456 Pages
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT90USB646 Datasheet(HTML) 228 Page - ATMEL Corporation

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228
7593L–AVR–09/12
AT90USB64/128
0x20
SLA+W has been transmitted;
NOT ACK has been received
Load data byte
or
No TWDR action or
No TWDR action
or
No TWDR action
0
1
0
1
0
0
1
1
1
1
1
1
X
X
X
X
Data byte will be transmitted and ACK or NOT ACK
will be received
Repeated START will be transmitted
STOP condition will be transmitted and
TWSTO Flag will be reset
STOP condition followed by a START condition will
be transmitted and TWSTO Flag will be reset
0x28
Data byte has been transmitted;
ACK has been received
Load data byte
or
No TWDR action or
No TWDR action
or
No TWDR action
0
1
0
1
0
0
1
1
1
1
1
1
X
X
X
X
Data byte will be transmitted and ACK or NOT ACK
will be received
Repeated START will be transmitted
STOP condition will be transmitted and
TWSTO Flag will be reset
STOP condition followed by a START condition will
be transmitted and TWSTO Flag will be reset
0x30
Data byte has been transmitted;
NOT ACK has been received
Load data byte
or
No TWDR action or
No TWDR action
or
No TWDR action
0
1
0
1
0
0
1
1
1
1
1
1
X
X
X
X
Data byte will be transmitted and ACK or NOT ACK
will be received
Repeated START will be transmitted
STOP condition will be transmitted and
TWSTO Flag will be reset
STOP condition followed by a START condition will
be transmitted and TWSTO Flag will be reset
0x38
Arbitration lost in SLA+W or data
bytes
No TWDR action
or
No TWDR action
0
1
0
0
1
1
X
X
2-wire Serial Bus will be released and not addressed
Slave mode entered
A START condition will be transmitted when the bus
becomes free
Table 21-3.
Status codes for Master Transmitter mode. (Continued)



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