ATTINY817-MFR. datasheet(144/492 Pages) MICROCHIP

Part #	ATTINY817-MFR.

Description	AVR짰 Microcontroller with Core Independent Peripherals and picoPower짰 Technology

PDF	492 Pages

Scroll/Zoom	100%

Manufacturer	MICROCHIP [Microchip Technology]

Direct Link	http://www.microchip.com

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144 / 492 page

Figure 20-2. Timer/Counter Block Diagram

Base Coun ter

Compare

(Unit x = {A,B,C})

Counter

CMPn

CMPnBUF

Wavefo rm

Generation

PERB

PER

CNT

= 0

"count"

"clear"

"direction"

"load"

Control Logi c

EVCTRL

CTRLA

OVF/UNF

(INT Req.)

TOP

"match"

CMPn

(INT Req.)

Control Logi c

Clock Select

BOTTOM

WOn Out

Event

Select

The counter register (CNT), period registers with buffer (PER and PERBUF), and compare registers with

buffers (CMPx and CMPBUFx) are 16-bit registers. All buffer registers have a buffer valid (BV) flag that

indicates when the buffer contains a new value.

During normal operation, the counter value is continuously compared to zero and the period (PER) value

to determine whether the counter has reached TOP or BOTTOM.

The counter value is also compared to the CMPx registers. These comparisons can be used to generate

interrupt requests. The waveform generator modes use these comparisons to set the waveform period or

pulse width.

A prescaled peripheral clock and events from the event system can be used to control the counter.

ATtiny417/817

Datasheet Complete

DS40001901B-page 144

ATTINY817-MFR. Datasheet(PDF) 144 Page - Microchip Technology

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