AT90PWM2 datasheet(303/365 Pages) ATMEL

Il numero della parte	AT90PWM2

Spiegazioni elettronici	High Performance, Low Power Atmel

PDF	365 Pages

Scroll/Zoom	100%

Produttore elettronici	ATMEL [ATMEL Corporation]

Homepage	http://www.atmel.com

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303 / 365 page

303

4317K–AVR–03/2013

AT90PWM2/3/2B/3B

5. Minimum VCC for Power-down is 2.5V.

6. The Analog Comparator Propagation Delay equals 1 comparator clock plus 30 nS. See “Analog Comparator” on page 227.

for comparator clock definition.

26.3

External Clock Drive Characteristics

26.3.1

Calibrated Internal RC Oscillator Accuracy

26.3.2

External Clock Drive Waveforms

Figure 26-1. External Clock Drive Waveforms

26.3.3

External Clock Drive

Table 26-1.

Calibration Accuracy of Internal RC Oscillator

Frequency

Temperature

Calibration Accuracy

Factory

Calibration

8.0 MHz

C±10%

User

Calibration

7.3 - 8.1 MHz

2.7V - 5.5V

-40

C - 85C±1%

VIL1

VIH1

Table 26-2.

External Clock Drive

Symbol

Parameter

VCC=2.7-5.5V

VCC=4.5-5.5V

Units

Min.

Max.

Min.

Max.

1/tCLCL

Oscillator Frequency

MHz

tCLCL

Clock Period

100

tCHCX

High Time

tCLCX

Low Time

tCLCH

Rise Time

1.6

0.5

s

tCHCL

Fall Time

1.6

0.5

s

t

CLCL

Change in period from one

clock cycle to the next

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