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ATMEGA329PA

8-bit Atmel Microcontroller with 16/32/64KB In-System Programmable Flash

Atmel Corporation 

2.3.15 AVCC

AVCC is the supply voltage pin for Port F and the A/D Converter. It should be externally connected to VCC, even if

the ADC is not used. If the ADC is used, it should be connected to VCC through a low-pass filter.

2.3.16 AREF

This is the analog reference pin for the A/D Converter.

2.3.17 LCDCAP

An external capacitor (typical > 470 nF) must be connected to the LCDCAP pin as shown in Figure 24-2, if the LCD

module is enabled and configured to use internal power. This capacitor acts as a reservoir for LCD power (VLCD). A

large capacitance reduces ripple on VLCD but increases the time until VLCD reaches its target value.

ATmega169A/PA/329A/PA/649A/P/3290A/PA/6490A/P [SUMMARY] 10

8284ES–AVR–02/2013

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