Datasheet

227
AT32UC3A
If the slave device supports only a 7-bit address, i.e. no internal address, IADRSZ must be set to
0.
n the figures below the following abbreviations are used:I
Figure 24-11. Master Write with One, Two or Three Bytes Internal Address and One Data Byte
Figure 24-12. Master Read with One, Two or Three Bytes Internal Address and One Data Byte
•S
Start
•Sr
Repeated Start
•P
Stop
•W
Write
•R
Read
•A
Acknowledge
•N
Not Acknowledge
• DADR
Device Address
•IADR
Internal Address
S DADR W A IADR(23:16) A IADR(15:8) A IADR(7:0) A DATA A P
S DADR W A IADR(15:8) A IADR(7:0) A P
DATA A
A IADR(7:0) A P
DATA AS DADR W
TWD
Three bytes internal address
Two bytes internal address
One byte internal address
TWD
TWD
S DADR
W
A IADR(23:16) A
IADR(15:8)
A
IADR(7:0) A
S DADR W A IADR(15:8)
A IADR(7:0) A
A
IADR(7:0) A
S DADR W
DATA N P
Sr DADR R A
Sr DADR R A DATA N P
Sr
DADR
R A DATA N P
TWD
TWD
TWD
Three bytes internal address
Two bytes internal address
One byte internal address
32058K
AVR32-01/12