Atmel Evaluation Kit for AT32uC3A0512, 32-Bit AVR Microcontroller Atmel ATEVK1105 ATEVK1105 Data Sheet
Product codes
ATEVK1105
813
AT32UC3A
Fix/Workaround
In PLL0/1 Control register, the bit 7 should be set in order to prevent unexpected behaviour.
In PLL0/1 Control register, the bit 7 should be set in order to prevent unexpected behaviour.
4. Peripheral Bus A maximum frequency is 33MHz instead of 66MHz.
Fix/Workaround
Do not set PBA frequency higher than 33 MHz.
Do not set PBA frequency higher than 33 MHz.
5. PCx pins go low in stop mode
In sleep mode stop all PCx pins will be controlled by GPIO module instead of oscillators.
This can cause drive contention on the XINx in worst case.
This can cause drive contention on the XINx in worst case.
Fix/Workaround
Before entering stop mode set all PCx pins to input and GPIO controlled.
Before entering stop mode set all PCx pins to input and GPIO controlled.
6. On some rare parts, the maximum HSB and CPU speed is 50MHz instead of 66MHz.
Fix/Workaround
Do not set the HSB/CPU speed higher than 50MHz when the firmware generate exceptions.
Do not set the HSB/CPU speed higher than 50MHz when the firmware generate exceptions.
7. If the BOD level is higher than VDDCORE, the part is constantly under reset
If the BOD level is set to a value higher than VDDCORE and enabled by fuses, the part will
be in constant reset.
be in constant reset.
Fix/Workaround
Apply an external voltage on VDDCORE that is higher than the BOD level and is lower than
VDDCORE max and disable the BOD.
Apply an external voltage on VDDCORE that is higher than the BOD level and is lower than
VDDCORE max and disable the BOD.
8. System Timer mask (Bit 16) of the PM CPUMASK register is not available.
Fix/Workaround
Do not use this bit.
Do not use this bit.
41.5.9
HMatrix
1. HMatrix fixed priority arbitration does not work
Fixed priority arbitration does not work.
Fix/Workaround
Use Round-Robin arbitration instead.
Use Round-Robin arbitration instead.
41.5.10
ADC
1. ADC possible miss on DRDY when disabling a channel
The ADC does not work properly when more than one channel is enabled.
Fix/Workaround
Do not use the ADC with more than one channel enabled at a time.
Do not use the ADC with more than one channel enabled at a time.
2. ADC OVRE flag sometimes not reset on Status Register read
The OVRE flag does not clear properly if read simultaneously to an end of conversion.
Fix/Workaround
None.
None.
3. Sleep Mode activation needs additional A to D conversion
32058K
AVR32-01/12