AT32UC3B0512-A2UT Atmel, AT32UC3B0512-A2UT Datasheet - Page 252

• Manufacturer Part Number: AT32UC3B0512-A2UT
• Description: IC MCU AVR32 512K FLASH 64TQFP
• Manufacturer: Atmel
• Series: AVR®32 UC3r

Specifications of AT32UC3B0512-A2UT

• Core Processor: AVR
• Core Size: 32-Bit
• Speed: 60MHz
• Connectivity: I²C, IrDA, SPI, SSC, UART/USART, USB
• Peripherals: Brown-out Detect/Reset, DMA, POR, PWM, WDT
• Number Of I /o: 44
• Program Memory Size: 512KB (512K x 8)
• Program Memory Type: FLASH
• Ram Size: 96K x 8
• Voltage - Supply (vcc/vdd): 1.65 V ~ 1.95 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-TQFP, 64-VQFP
• Controller Family/series: AT32UC3B
• No. Of I/o's: 44
• Ram Memory Size: 96KB
• Cpu Speed: 60MHz
• No. Of Timers: 1
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

19.14.6
Name:
Access:
Offset:
Reset Value: 0x0000F009
• EOSACC: End Of Slave Access (clear on read)
• SCLWS: Clock Wait State (automatically set / reset)
• ARBLST: Arbitration Lost (clear on read)
• NACK: Not Acknowledged (clear on read)
• OVRE: Overrun Error (clear on read)
• GACC: General Call Access (clear on read)
32059K–03/2011
31
23
15
–
–
–
7
–
This bit is only used in Slave mode.
0 = A slave access is being performing.
1 = The Slave Access is finished. End Of Slave Access is automatically set as soon as SVACC is reset.
EOSACC behavior can be seen in
This bit is only used in Slave mode.
0 = The clock is not stretched.
1 = The clock is stretched. THR / RHR buffer is not filled / emptied before the emission / reception of a new character.
SCLWS behavior can be seen in
This bit is only used in Master mode.
0 = Arbitration won.
1 = Arbitration lost. Another master of the TWI bus has won the multi-master arbitration. TXCOMP is set at the same time.
NACK used in Master mode:
0 = Each data byte has been correctly received by the far-end side TWI slave component.
1 = A data byte has not been acknowledged by the slave component. Set at the same time as TXCOMP.
NACK used in Slave Read mode:
0 = Each data byte has been correctly received by the Master.
1 = In read mode, a data byte has not been acknowledged by the Master. When NACK is set the programmer must not fill THR
even if TXRDY is set, because it means that the Master will stop the data transfer or re initiate it.
Note that in Slave Write mode all data are acknowledged by the TWI.
This bit is only used in Slave mode.
0 = RHR has not been loaded while RXRDY was set
1 = RHR has been loaded while RXRDY was set. Reset by read in SR when TXCOMP is set.
This bit is only used in Slave mode.
0 = No General Call has been detected.
Status Register
SR
Read-only
0x20
OVRE
30
22
14
–
–
–
6
GACC
29
21
13
–
–
–
5
Figure 19-27 on page 241
Figure 19-29 on page 243
SVACC
28
20
12
–
–
–
4
and
and
EOSACC
SVREAD
Figure 19-28 on page
Figure 19-30 on page 243
27
19
11
–
–
3
SCLWS
TXRDY
26
18
10
–
–
2
242.
ARBLST
RXRDY
25
17
–
–
9
1
AT32UC3B
TXCOMP
NACK
24
16
–
–
8
0
252