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ManualsBrandsMicrochip ManualsAVR MicrocontrollersAVR RISC Microcontroller 8 bit/16 bit 32KB TQFP
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2018 Microchip Technology Inc. Data Sheet Complete DS40002059A-page 145
ATxmega32E5/16E5/8E5
38.2 Rev. A
• DAC: AREF on PD0 is not available for the DAC
• EDMA: Channel transfer never stops when double buffering is enabled on sub-sequent channels
• ADC: Offset correction fails in unsigned mode
• ADC: Averaging is failing when channel scan is enabled
• ADC: Averaging in single conversion requires multiple conversion triggers
• ADC accumulator sign extends the result in unsigned mode averaging
• ADC: Free running average mode issue
• ADC: Event triggered conversion in averaging mode
• AC: Flag can not be cleared if the module is not enabled
• USART: Receiver not functional when variable data length and start frame detector are enabled
• T/C: Counter does not start when CLKSEL is written
• EEPROM write and Flash write operations fails under 2.0V
• TWI master or slave remembering data
• Temperature Sensor not calibrated
Issue: DAC: AREF on PD0 is not available for the DAC
The AREF external reference input on pin PD0 is not available for the DAC.
Workaround:
No workaround. Only AREF on pin PA0 can be used as external reference input for the DAC.
Issue: EDMA: Channel transfer never stops when double buffering is enabled on sub-sequent channels
When the double buffering is enabled on two channels, the channels which are not set in double buffering mode are
never disabled at the end of the transfer. A new transfer can start if the channel is not disabled by software.
Workaround:
• CHMODE = 00
Enable double buffering on all channels or do not use channels which are not set the double buffering mode.
• CHMODE = 01 or 10
Do not use the channel which is not supporting the double buffering mode.
Issue: ADC: Offset correction fails in unsigned mode
In single ended, unsigned mode, a problem appears in low saturation (zero) when the offset correction is activated.
The offset is removed from result and when a negative result appears, the result is not correct.
Workaround:
No workaround, but avoid using this correction method to cancel V effect.