PIC32MX795F512LT-80ISLASHPF datasheet(195/256 Pages) MICROCHIP

195 / 256 page

DS61156G-page 195

PIC32MX5XX/6XX/7XX

TABLE 31-17: EXTERNAL CLOCK TIMING REQUIREMENTS

AC CHARACTERISTICS

Standard Operating Conditions: 2.3V to 3.6V

(unless otherwise stated)

Operating temperature

-40°C

≤TA ≤+85°C for Industrial

-40°C

≤TA ≤+105°C for V-Temp

Param.

No.

Symbol

Characteristics

Min.

Typical(1)

Max.

Units

Conditions

OS10

FOSC

External CLKI Frequency

(External clocks allowed only

in EC and ECPLL modes)

—

MHz

EC (Note 4)

ECPLL (Note 3)

OS11

Oscillator Crystal Frequency

—

MHz XT (Note 4)

OS12

—

MHz XTPLL

(Notes 3,4)

OS13

—

MHz HS (Note 5)

OS14

—

MHz HSPLL

(Notes 3,4)

OS15

32.768

100

kHz

SOSC (Note 4)

OS20

TOSC

TOSC = 1/FOSC = TCY(2)

—

See parameter

OS10 for FOSC

value

OS30

TOSL,

TOSH

External Clock In (OSC1)

High or Low Time

0.45 x TOSC

——

EC (Note 4)

OS31

TOSR,

TOSF

External Clock In (OSC1)

Rise or Fall Time

—

0.05 x TOSC

EC (Note 4)

OS40

TOST

Oscillator Start-up Timer Period

(Only applies to HS, HSPLL,

XT, XTPLL and SOSC Clock

Oscillator modes)

—1024

—

TOSC (Note 4)

OS41

TFSCM

Primary Clock Fail Safe

Time-out Period

—2

—

(Note 4)

OS42

External Oscillator

Transconductance

—12

—

mA/V VDD = 3.3V,

TA = +25°C

(Note 4)

Note 1:

Data in “Typical” column is at 3.3V, 25°C unless otherwise stated. Parameters are characterized but are

not tested.

Instruction cycle period (TCY) equals the input oscillator time base period. All specified values are based on

characterization data for that particular oscillator type under standard operating conditions with the device

executing code. Exceeding these specified limits may result in an unstable oscillator operation and/or

higher than expected current consumption. All devices are tested to operate at “min.” values with an

external clock applied to the OSC1/CLKI pin.

PLL input requirements: 4 MHZ

≤ FPLLIN ≤ 5 MHZ (use PLL prescaler to reduce FOSC). This parameter is

characterized, but tested at 10 MHz only at manufacturing.

This parameter is characterized, but not tested in manufacturing.

PIC32MX795F512LT-80I/PF датащи(PDF) 195 Page - Microchip Technology

PIC32MX795F512LT-80I/PF датащи(HTML) 195 Page - Microchip Technology

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

датащи скачать

ссылки URL