PIC24FJ128GA310 datasheet(371/406 Pages) MICROCHIP

371 / 406 page

 2010-2011 Microchip Technology Inc.

DS39996F-page 371

PIC24FJ128GA310 FAMILY

TABLE 32-20: PLL CLOCK TIMING SPECIFICATIONS (VDD = 2.2V TO 3.6V)

AC CHARACTERISTICS

Standard Operating Conditions: 2V to 3.6V (unless otherwise stated)

Operating temperature

-40°C

 TA  +85°C for Industrial

Param

No.

Symbol

Characteristic(1)

Min

Typ(2)

Max

Units

Conditions

OS50 FPLLI

PLL Input Frequency

Range(2)

—

MHz

ECPLL mode

—

8MHz

HSPLL mode

—

MHz

XTPLL mode

OS52 TLOCK

PLL Start-up Time

(Lock Time)

——

128

s

OS53 DCLK

CLKO Stability (Jitter)

-0.25

—

0.25

Note 1:

These parameters are characterized but not tested in manufacturing.

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

only and are not tested.

TABLE 32-21: INTERNAL RC ACCURACY

AC CHARACTERISTICS

Standard Operating Conditions: 2V to 3.6V (unless otherwise stated)

Operating temperature

-40°C

 TA +85°C for Industrial

Param

No.

Characteristic

Min

Typ

Max

Units

Conditions

F20

FRC Accuracy @

8MHz(1,2)

-1

—

-10°C

 TA +85°C 2V  VDD 3.6V

-1.5

—

1.5

-40°C

 TA -10°C 2V  VDD 3.6V

F21

LPRC @ 31 kHz

-20

—

-40°C

 TA +85°C VCAP (on-chip regulator

output voltage) = 1.8V

Note 1:

Frequency is calibrated at 25°C and 3.3V. OSCTUN bits can be used to compensate for temperature drift.

To achieve this accuracy, physical stress applied to the microcontroller package (ex., by flexing the PCB)

must be kept to a minimum.

TABLE 32-22: RC OSCILLATOR START-UP TIME

AC CHARACTERISTICS

Standard Operating Conditions: 2V to 3.6V (unless otherwise stated)

Operating temperature

-40°C

 TA  +85°C for Industrial

Param

No.

Characteristic

Min

Typ

Max

Units

Conditions

TFRC

—15

—

s

TLPRC

—50

—

s

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