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ATMEGA48A Datasheet(PDF) 32 Page - ATMEL Corporation

Part # ATMEGA48A
Description  8-bit Atmel Microcontroller with 4/8/16/32K Bytes In-System Programmable Flash
Download  35 Pages
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

ATMEGA48A Datasheet(HTML) 32 Page - ATMEL Corporation

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32
8271DS–AVR–05/11
ATmega48A/PA/88A/PA/168A/PA/328/P
11.8
Errata ATmega328P
The revision letter in this section refers to the revision of the ATmega328P device.
11.8.1
Rev D
• Analog MUX can be turned off when setting ACME bit
1.
Analog MUX can be turned off when setting ACME bit
If the ACME (Analog Comparator Multiplexer Enabled) bit in ADCSRB is set while MUX3 in
ADMUX is '1' (ADMUX[3:0]=1xxx), all MUX'es are turned off until the ACME bit is cleared.
Problem Fix/Workaround
Clear the MUX3 bit before setting the ACME bit.
11.8.2
Rev C
Not sampled.
11.8.3
Rev B
• Analog MUX can be turned off when setting ACME bit
• Unstable 32kHz Oscillator
1.
Analog MUX can be turned off when setting ACME bit
If the ACME (Analog Comparator Multiplexer Enabled) bit in ADCSRB is set while MUX3 in
ADMUX is '1' (ADMUX[3:0]=1xxx), all MUX'es are turned off until the ACME bit is cleared.
Problem Fix/Workaround
Clear the MUX3 bit before setting the ACME bit.
2.
Unstable 32kHz Oscillator
The 32kHz oscillator does not work as system clock. The 32kHz oscillator used as asyn-
chronous timer is inaccurate.
Problem Fix/ Workaround
None.
11.8.4
Rev A
• Unstable 32kHz Oscillator
1.
Unstable 32kHz Oscillator
The 32kHz oscillator does not work as system clock. The 32kHz oscillator used as asyn-
chronous timer is inaccurate.
Problem Fix/ Workaround
None.


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