AT32UC3A1256AU Atmel Corporation, AT32UC3A1256AU Datasheet - Page 212

• Manufacturer Part Number: AT32UC3A1256AU
• Manufacturer: Atmel Corporation

Specifications of AT32UC3A1256AU

• Flash (kbytes): 256 Kbytes
• Pin Count: 100
• Max. Operating Frequency: 66 MHz
• Cpu: 32-bit AVR
• # Of Touch Channels: 32
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 69
• Ext Interrupts: 69
• Usb Transceiver: 1
• Usb Speed: Full Speed
• Usb Interface: Device + OTG
• Spi: 6
• Twi (i2c): 1
• Uart: 4
• Ssc: 1
• Ethernet: 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 384
• Resistive Touch Screen: No
• Dac Channels: 2
• Dac Resolution (bits): 16
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 64
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: No
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 3.0-3.6 or (1.65-1.95+3.0-3.6)
• Operating Voltage (vcc): 3.0-3.6 or (1.65-1.95+3.0-3.6)
• Fpu: No
• Mpu / Mmu: Yes / No
• Timers: 10
• Output Compare Channels: 16
• Input Capture Channels: 6
• Pwm Channels: 13
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

32058K AVR32-01/12
23.8.5
Name:
Access Type:
•
0 = No data has been received since the last read of RDR
1 = Data has been received and the received data has been transferred from the serializer to RDR since the last read of
RDR.
• TDRE: Transmit Data Register Empty
0 = Data has been written to TDR and not yet transferred to the serializer.
1 = The last data written in the Transmit Data Register has been transferred to the serializer.
TDRE equals zero when the SPI is disabled or at reset. The SPI enable command sets this bit to one.
• MODF: Mode Fault Error
0 = No Mode Fault has been detected since the last read of SR.
1 = A Mode Fault occurred since the last read of the SR.
• OVRES: Overrun Error Status
0 = No overrun has been detected since the last read of SR.
1 = An overrun has occurred since the last read of SR.
An overrun occurs when RDR is loaded at least twice from the serializer since the last read of the RDR.
•
0 = The Receive Counter Register has not reached 0 since the last write in RCR or RNCR.
1 = The Receive Counter Register has reached 0 since the last write in RCR or RNCR.
•
0 = The Transmit Counter Register has not reached 0 since the last write in TCR or TNCR.
1 = The Transmit Counter Register has reached 0 since the last write in TCR or TNCR.
•
0 = RCR or RNCR has a value other than 0.
1 = Both RCR and RNCR has a value of 0.
•
0 = TCR or TNCR has a value other than 0.
RDRF: Receive Data Register Full
ENDRX: End of RX buffer
ENDTX: End of TX buffer
RXBUFF: RX Buffer Full
TXBUFE: TX Buffer Empty
TXBUFE
31
23
15
–
–
–
7
SPI Status Register
RXBUFF
30
22
14
–
–
–
6
ENDTX
29
21
13
–
–
–
5
SR
Read-only
ENDRX
28
20
12
–
–
–
4
OVRES
27
19
11
–
–
–
3
MODF
26
18
10
–
–
–
2
TXEMPTY
TDRE
25
17
–
–
9
1
AT32UC3A
SPIENS
NSSR
RDRF
24
16
–
8
0
212