AT32UC3A0256 Atmel Corporation, AT32UC3A0256 Datasheet - Page 272

• Manufacturer Part Number: AT32UC3A0256
• Manufacturer: Atmel Corporation

Specifications of AT32UC3A0256

• Flash (kbytes): 256 Kbytes
• Pin Count: 144
• Max. Operating Frequency: 66 MHz
• Cpu: 32-bit AVR
• # Of Touch Channels: 32
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 109
• Ext Interrupts: 109
• 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
• External Bus Interface: 1
• Dram Memory: sdram
• 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
25.7.8
25.7.9
Loop Mode
Interrupt
Figure 25-14. Transmit Frame Format in Continuous Mode
Note:
Figure 25-15. Receive Frame Format in Continuous Mode
Note:
The receiver can be programmed to receive transmissions from the transmitter. This is done by
setting the Loop Mode (LOOP) bit in RFMR. In this case, RX_DATA is connected to TX_DATA,
RX_FRAME_SYNC is connected to TX_FRAME_SYNC and RX_CLOCK is connected to
TX_CLOCK.
Most bits in SR have a corresponding bit in interrupt management registers.
The SSC can be programmed to generate an interrupt when it detects an event. The interrupt is
controlled by writing IER (Interrupt Enable Register) and IDR (Interrupt Disable Register) These
registers enable and disable, respectively, the corresponding interrupt by setting and clearing
the corresponding bit in IMR (Interrupt Mask Register), which controls the generation of inter-
rupts by asserting the SSC interrupt line connected to the interrupt controller.
1. STTDLY is set to 0. In this example, THR is loaded twice. FSDEN value has no effect on the
1. STTDLY is set to 0.
transmission. SyncData cannot be output in continuous mode.
TX_DATA
Start: 1. TXEMPTY set to 1
RX_DATA
2. Write into the THR
Start
From THR
DATLEN
Start = Enable Receiver
Data
DATLEN
To RHR
Data
From THR
DATLEN
Data
DATLEN
To RHR
Data
Default
AT32UC3A
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