70592C datasheet(253/314 Pages) MICROCHIP

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DS70592C-page 253

PIC24HJXXXGPX06A/X08A/X10A

TABLE 24-17: PLL CLOCK TIMING SPECIFICATIONS (VDD = 3.0V TO 3.6V)

AC CHARACTERISTICS

Standard Operating Conditions: 3.0V to 3.6V (unless otherwise stated)

Operating temperature

-40°C

≤ TA ≤+85°C for Industrial

-40°C

≤TA ≤+125°C for Extended

Param

No.

Symbol

Characteristic

Min

Typ(1)

Max

Units

Conditions

OS50

FPLLI

PLL Voltage Controlled

Oscillator (VCO) Input

Frequency Range(2)

0.8

—

MHz ECPLL, HSPLL, XTPLL

modes

OS51

FSYS

On-Chip VCO System

Frequency

100

—

200

MHz

OS52

TLOCK

PLL Start-up Time (Lock Time)

0.9

1.5

3.1

OS53

DCLK

CLKO Stability (Jitter)

-3

0.5

Measured over 100 ms

period

Note 1: Data in “Typ” column is at 3.3V, 25°C unless otherwise stated. Parameters are for design guidance only

and are not tested.

2: These parameters are characterized by similarity but are not tested in manufacturing. This specification is

based on clock cycle by clock cycle measurements. To calculate the effective jitter for individual time base

or communication clocks used by peripherals use the formula:

Peripheral Clock Jitter = DCLK / √(FOSC/Peripheral bit rate clock)

Example Only: Fosc = 80 MHz, DCLK = 3%, SPI bit rate clock, (i.e. SCK), is 5 MHz

SPI SCK Jitter = [ DCLK / √(80 MHz/5 MHz)] = [3%/ √16] = [3% / 4] = 0.75%

TABLE 24-18: AC CHARACTERISTICS: INTERNAL FRC ACCURACY

AC CHARACTERISTICS

Standard Operating Conditions: 3.0V to 3.6V (unless otherwise stated)

Operating temperature

-40°C

≤ TA ≤+85°C for Industrial

-40°C

≤TA ≤+125°C for Extended

Param

No.

Characteristic

Min

Typ

Max

Units

Conditions

Internal FRC Accuracy @ 7.3728 MHz(1)

F20a

FRC

-2

—

-40°C

≤TA ≤+85°C

VDD = 3.0-3.6V

F20b

FRC

-5

—

-40°C

≤TA ≤+125°C

VDD = 3.0-3.6V

Note 1: Frequency calibrated at 25°C and 3.3V. TUN bits can be used to compensate for temperature drift.

TABLE 24-19: INTERNAL LPRC ACCURACY

AC CHARACTERISTICS

Standard Operating Conditions: 3.0V to 3.6V (unless otherwise stated)

Operating temperature

-40°C

≤ TA ≤+85°C for Industrial

-40°C

≤TA ≤+125°C for Extended

Param

No.

Characteristic

Min

Typ

Max

Units

Conditions

LPRC @ 32.768 kHz(1)

F21a

LPRC

-30

—

+30

-40°C

≤TA ≤+85°C

F21b

LPRC

-35

—

+35

-40°C

≤TA ≤+125°C

Note 1: Change of LPRC frequency as VDD changes.

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