ATMEGA169PA-MCUR 查看數據表（PDF） - Atmel Corporation

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ATMEGA169PA-MCUR

8-bit Microcontroller with 16K Bytes In-System Programmable Flash

Atmel Corporation 

ATmega169PA

2.2.14 AREF

2.2.15 LCDCAP

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

An external capacitor (typical > 470 nF) must be connected to the LCDCAP pin as shown in Fig-

ure 23-2 on page 234. 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.

8

8171B–AVR–03/10

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