A000048 Arduino, A000048 Datasheet - Page 555

• Manufacturer Part Number: A000048
• Description: ATMEGA328 MCU IC W/ Arduino UNO Bootloader
• Manufacturer: Arduino
• Series: -r

Specifications of A000048

• Accessory Type: Pre-Programed IC
• Features: Powered Via USB Connection, AC-to-DC Adapter, Power Jack, ICSP Header
• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 23
• Program Memory Size: 32KB (16K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 1K x 8
• Ram Size: 2K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: -
• For Use With: ATmega328 Microcontrollers
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

34.8
34.8.1
34.8.2
34.8.3
34.8.4
8271C–AVR–08/10
Errata ATmega328P
Rev D
Rev C
Rev B
Rev A
The revision letter in this section refers to the revision of the ATmega328P device.
•
1.
Not sampled.
•
•
1. Unstable 32 kHz Oscillator
2. Unstable 32 kHz Oscillator
•
1. Unstable 32 kHz Oscillator
ATmega48A/48PA/88A/88PA/168A/168PA/328/328
Analog MUX can be turned off when setting ACME bit
Analog MUX can be turned off when setting ACME bit
Unstable 32 kHz Oscillator
Unstable 32 kHz Oscillator
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.
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.
The 32 kHz oscillator does not work as system clock. The 32 kHz oscillator used as asyn-
chronous timer is inaccurate.
Problem Fix/ Workaround
None.
The 32 kHz oscillator does not work as system clock. The 32 kHz oscillator used as asyn-
chronous timer is inaccurate.
Problem Fix/ Workaround
None.
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