ATmega169P datasheet(211/393 Pages) ATMEL

No. de pieza	ATmega169P

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

PDF	393 Pages

Scroll/Zoom	100%

Fabricante Electrónico	ATMEL [ATMEL Corporation]

Página de inicio	http://www.atmel.com

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211

8018N–AVR–08/09

ATmega169P

21. AC - Analog Comparator

The Analog Comparator compares the input values on the positive pin AIN0 and negative pin

AIN1. When the voltage on the positive pin AIN0 is higher than the voltage on the negative pin

AIN1, the Analog Comparator output, ACO, is set. The comparator’s output can be set to trigger

the Timer/Counter1 Input Capture function. In addition, the comparator can trigger a separate

interrupt, exclusive to the Analog Comparator. The user can select Interrupt triggering on com-

parator output rise, fall or toggle. A block diagram of the comparator and its surrounding logic is

shown in Figure 21-1

The Power Reduction ADC bit, PRADC, in ”PRR – Power Reduction Register” on page 45 must

disabled by writing a logical zero to be able to use the ADC input MUX.

Figure 21-1. Analog Comparator Block Diagram

(2)

Notes:

1. See Table 21-1 on page 212.

2. Refer to Figure 1-1 on page 2 and Table 13-5 on page 74 for Analog Comparator pin

placement.

ACBG

BANDGAP

REFERENCE

ADC MULTIPLEXER

OUTPUT

ACME

ADEN

(1)

ATmega169P Datasheet(PDF) 211 Page - ATMEL Corporation