ATEVK1105 Atmel, ATEVK1105 Datasheet - Page 252
![KIT EVAL FOR AT32UC3A0](/photos/9/20/92036/atevk1105_sml.jpg)
ATEVK1105
Manufacturer Part Number
ATEVK1105
Description
KIT EVAL FOR AT32UC3A0
Manufacturer
Atmel
Series
AVR®32r
Type
MCUr
Datasheets
1.ATAVRONE-PROBECBL.pdf
(16 pages)
2.ATEVK1104.pdf
(826 pages)
3.ATEVK1105.pdf
(28 pages)
Specifications of ATEVK1105
Contents
Evaluation Board, Software and Documentation
Processor To Be Evaluated
AT32UC3A0512
Processor Series
AVR
Data Bus Width
32 bit
Interface Type
USART, TWI, USB, SPI, Ethernet
Operating Supply Voltage
3.3 V
Silicon Manufacturer
Atmel
Core Architecture
AVR
Core Sub-architecture
AVR UC3
Silicon Core Number
AT32UC3A0512
Silicon Family Name
AVR
Kit Contents
Board CD Docs
Rohs Compliant
Yes
For Use With/related Products
AT32UC3A0
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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24.14.7
Name:
Access:
Reset Value: 0x0000F009
• TXCOMP: Transmission Completed (automatically set / reset)
TXCOMP used in Master mode:
0 = During the length of the current frame.
1 = When both holding and shifter registers are empty and STOP condition has been sent.
TXCOMP behavior in Master mode can be seen in
TXCOMP used in Slave mode:
0 = As soon as a Start is detected.
1 = After a Stop or a Repeated Start + an address different from SADR is detected.
TXCOMP behavior in Slave mode can be seen in
page 244
• RXRDY: Receive Holding Register Ready (automatically set / reset)
0 = No character has been received since the last RHR read operation.
1 = A byte has been received in the RHR since the last read.
RXRDY behavior in Master mode can be seen in
RXRDY behavior in Slave mode can be seen in
page 244
• TXRDY: Transmit Holding Register Ready (automatically set / reset)
TXRDY used in Master mode:
0 = The transmit holding register has not been transferred into shift register. Set to 0 when writing into THR register.
1 = As soon as a data byte is transferred from THR to internal shifter or if a NACK error is detected, TXRDY is set at the
same time as TXCOMP and NACK. TXRDY is also set when MSEN is set (enable TWI).
TXRDY behavior in Master mode can be seen in
32058J-AVR32-04/11
TXBUFE
31
23
15
–
–
7
–
and
and
TWI Status Register
SR
Read-only
Figure 24-29 on page
Figure 24-29 on page
RXBUFF
OVRE
30
22
14
–
–
6
ENDTX
GACC
244.
244.
29
21
13
–
–
5
Figure 24-8 on page
Figure 24-10 on page
Figure 24-24 on page
ENDRX
SVACC
Figure 24-26 on page
Figure 24-8 on page 225
28
20
12
–
–
4
EOSACC
SVREAD
27
19
11
–
–
3
225.
226.
241,
242,
and in
Figure 24-27 on page
Figure 24-27 on page
SCLWS
TXRDY
26
18
10
–
–
2
Figure 24-10 on page
ARBLST
RXRDY
25
17
–
–
9
1
243,
243,
AT32UC3A
226.
Figure 24-28 on
Figure 24-28 on
TXCOMP
NACK
24
16
–
–
8
0
252
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