AT32UC3A0512-ALTES ATMEL [ATMEL Corporation], AT32UC3A0512-ALTES Datasheet - Page 67
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AT32UC3A0512-ALTES
Manufacturer Part Number
AT32UC3A0512-ALTES
Description
AVR32 32-Bit Microcontroller
Manufacturer
ATMEL [ATMEL Corporation]
Datasheet
1.AT32UC3A0512-ALTES.pdf
(86 pages)
- Current page: 67 of 86
- Download datasheet (2Mb)
15.2
15.2.1
15.2.2
15.2.3
32058FS–AVR32–08/08
Rev. I
PWM
ADC
SPI
1. PWM channel interrupt enabling triggers an interrupt
2. PWM counter restarts at 0x0001
3. PWM update period to a 0 value does not work
1. Sleep Mode activation needs additional A to D conversion
1. SPI Slave / PDCA transfer: no TX UNDERRUN flag
2. SPI FDIV option does not work
3. SPI Bad Serial Clock Generation on 2nd chip_select when SCBR = 1, CPOL=1 and
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.
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
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.
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.
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.
Selecting clock signal using FDIV = 1 does not work as specified.
Fix/Workaround
Do not set FDIV = 1.
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
AT32UC3A
67
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