Datasheet

 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 F
PLLI PLL Input Frequency
Range
(2)
4 — 8 MHz ECPLL mode
4
—
8MHzHSPLL mode
4
—
8 MHz XTPLL mode
OS52 T
LOCK PLL Start-up Time
(Lock Time)
——128s
OS53 D
CLK CLKO Stability (Jitter) -0.25 — 0.25 %
Note 1: These parameters are characterized but not tested in manufacturing.
2: 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  T
A +85°C for Industrial
Param
No.
Characteristic Min Typ Max Units Conditions
F20 FRC Accuracy @
8MHz
(1,2)
-1 — 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 — 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.
2: 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  T
A  +85°C for Industrial
Param
No.
Characteristic Min Typ Max Units Conditions
T
FRC —15—s
TLPRC —50—s