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AT32UC3A0512 Datasheet(PDF) 76 Page - ATMEL Corporation |
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AT32UC3A0512 Datasheet(HTML) 76 Page - ATMEL Corporation |
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76 / 98 page  76 AT32UC3A 15.3 Rev. I 15.3.1 PWM 1. PWM channel interrupt enabling triggers an interrupt When enabling a PWM channel that is configured with center aligned period (CALG=1), an interrupt is signalled. Fix/Workaround When using center aligned mode, enable the channel and read the status before channel interrupt is enabled. 2. PWM counter restarts at 0x0001 The PWM counter restarts at 0x0001 and not 0x0000 as specified. Because of this the first PWM period has one more clock cycle. Fix/Workaround - The first period is 0x0000, 0x0001, ..., period - Consecutive periods are 0x0001, 0x0002, ..., period 3. PWM update period to a 0 value does not work It is impossible to update a period equal to 0 by the using the PWM update register (PWM_CUPD). Fix/Workaround Do not update the PWM_CUPD register with a value equal to 0. 15.3.2 ADC 1. Sleep Mode activation needs additional A to D conversion If the ADC sleep mode is activated when the ADC is idle the ADC will not enter sleep mode before after the next AD conversion. Fix/Workaround Activate the sleep mode in the mode register and then perform an AD conversion. 15.3.3 SPI 1. SPI Slave / PDCA transfer: no TX UNDERRUN flag There is no TX UNDERRUN flag available, therefore in SPI slave mode, there is no way to be informed of a character lost in transmission. Fix/Workaround For PDCA transfer: none. 2. SPI FDIV option does not work Selecting clock signal using FDIV = 1 does not work as specified. Fix/Workaround Do not set FDIV = 1. 3. SPI Bad Serial Clock Generation on 2nd chip_select when SCBR = 1, CPOL=1 and NCPHA=0 When multiple CS are in use, if one of the baudrate equals to 1 and one of the others doesn't equal to 1, and CPOL=1 and CPHA=0, then an aditional pulse will be generated on SCK. Fix/workaround 32058KS–AVR32–01/12 |
Similar Part No. - AT32UC3A0512_14 |
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Similar Description - AT32UC3A0512_14 |
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