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參數(shù)資料
| 型號(hào)： | IQ80C52EXXX-12D |
| 廠商： | ATMEL CORP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, MROM, 12 MHz, MICROCONTROLLER, CQFP44 |
| 封裝： | CERAMIC, QFP-44 |
| 文件頁(yè)數(shù)： | 105/108頁(yè) |
| 文件大小： | 3682K |
| 代理商： | IQ80C52EXXX-12D |
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96
8069R–AVR–06/2013
XMEGA A4
Not recommended for new designs -
Use XMEGA A4U series
Problem fix/Workaround
Do not set the BOD level higher than VCC even if the BOD is not used.
11. Sampled BOD in Active mode will cause noise when bandgap is used as reference
Using the BOD in sampled mode when the device is running in Active or Idle mode will add
noise on the bandgap reference for ADC, DAC and Analog Comparator.
Problem fix/Workaround
If the bandgap is used as reference for either the ADC, DAC or the Analog Comparator, the
BOD must not be set in sampled mode.
12. DAC is nonlinear and inaccurate when reference is above 2.4V or VCC - 0.6V
Using the DAC with a reference voltage above 2.4V or VCC - 0.6V will give inaccurate out-
put when converting codes that give below 0.75V output:
– ±10 LSB for continuous mode
– ±200 LSB for Sample and Hold mode
Problem fix/Workaround
None.
13. DAC has increased INL or noise for some operating conditions
Some DAC configurations or operating condition will result in increased output error.
– Continous mode: ±5 LSB
– Sample and hold mode: ±15 LSB
– Sample and hold mode for reference above 2.0v: up to ±100 LSB
Problem fix/Workaround
None.
14. EEPROM page buffer always written when NVM DATA0 is written
If the EEPROM is memory mapped, writing to NVM DATA0 will corrupt data in the EEPROM
page buffer.
Problem fix/Workaround
Before writing to NVM DATA0, for example when doing software CRC or flash page buffer
write, check if EEPROM page buffer active loading flag (EELOAD) is set. Do not write NVM
DATA0 when EELOAD is set.
15. Pending full asynchronous pin change interrupts will not wake the device
Any full asynchronous pin-change Interrupt from pin 2, on any port, that is pending when the
sleep instruction is executed, will be ignored until the device is woken from another source
or the source triggers again. This applies when entering all sleep modes where the System
Clock is stopped.
Problem fix/Workaround
None.
16. Pin configuration does not affect Analog Comparator output
The Output/Pull and inverted pin configuration does not affect the Analog Comparator
output.
Problem fix/Workaround
None for Output/Pull configuration.
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