ATXMEGA8E5 datasheet(147/153 Pages) MICROCHIP

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Data Sheet Complete

DS40002059A-page 147

ATxmega32E5/16E5/8E5

Issue:

AC: Flag can not be cleared if the module is not enabled

It is not possible to clear the AC interrupt flags without enabling either of the analog comparators.

Workaround:

Clear the interrupt flags before disabling the module.

Issue:

USART: Receiver not functional when variable data length and start frame detector are enabled

When using USART in variable frame length with XCL PEC01 configuration and start frame detection activated, the

USART receiver is not functional.

Workaround:

Use XCL BTC0PCE2 configuration instead of PEC01.

Issue:

T/C: Counter does not start when CLKSEL is written

When STOP bit is cleared (CTRLGCLR.STOP) before the timer/counter is enabled (CTRLA.CLKSEL != OFF), the T/C

doesn't start operation.

Workaround:

Do not write CTRLGCLR.STOP bit before writing CTRLA.CLKSEL bits.

Issue:

EEPROM write and Flash write operations fails under 2.0V

EEPROM write and Flash write operations are limited from 2.0V to 3.6V. Other functionalities operates from 1.6V to

3.6V.

Workaround:

None.

Issue:

TWI master or slave remembering data

If a write is made to Data register, prior to Address register, the TWI design sends the data as soon as the write to

Address register is made. But the send data will be always 0x00.

Workaround:

None.

Issue:

Temperature sensor not calibrated

Temperature sensor factory calibration is not implemented.

Workaround:

None.

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