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AT32UC3A0512 Datasheet(PDF) 89 Page - ATMEL Corporation |
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AT32UC3A0512 Datasheet(HTML) 89 Page - ATMEL Corporation |
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89 / 98 page  89 AT32UC3A 2. USART RXBREAK problem when no timeguard In asynchronous mode the RXBREAK flag is not correctly handled when the timeguard is 0 and the break character is located just after the stop bit. Fix/Workaround If the NBSTOP is 1, timeguard should be different from 0. 3. USART Handshaking: 2 characters sent / CTS rises when TX If CTS switches from 0 to 1 during the TX of a character, if the Holding register is not empty, the TXHOLDING is also transmitted. Fix/Workaround None. 4. USART PDC and TIMEGUARD not supported in MANCHESTER Manchester encoding/decoding is not working. Fix/Workaround Do not use manchester encoding. 5. USART SPI mode is non functional on this revision. Fix/Workaround Do not use the USART SPI mode. 6. DCD is active High instead of Low. In modem mode the DCD signal is assumed to be active high by the USART, butshould have been active low. Fix/Workaround Add an external inverter to the DCD line. 7. ISO7816 info register US_NER cannot be read The NER register always returns zero. Fix/Workaround None. 15.5.8 Power Manager 1. Voltage regulator input and output is connected to VDDIO and VDDCORE inside the device The voltage regulator input and output is connected to VDDIO and VDDCORE respectively inside the device. Fix/Workaround Do not supply VDDCORE externally, as this supply will work in paralell with the regulator. 2. Wrong reset causes when BOD is activated Setting the BOD enable fuse will cause the Reset Cause Register to list BOD reset as the reset source even though the part was reset by another source. Fix/Workaround Do not set the BOD enable fuse, but activate the BOD as soon as your program starts. 3. PLL0/1 Lock control does not work Lock Control does not work for PLL0 and PLL1. 32058KS–AVR32–01/12 |
Similar Part No. - AT32UC3A0512_14 |
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Similar Description - AT32UC3A0512_14 |
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