PIC24FJ64GA705 Datasheet, PDF (370/412 Pages) –

PIC24FJ256GA705 FAMILY
TABLE 32-19: AC SPECIFICATIONS FOR PHASE-LOCKED LOOP MODE
AC CHARACTERISTICS
Standard Operating Conditions: 2.0V to 3.6V (unless otherwise stated)
Operating temperature
-40°C  TA  +85°C for Industrial
Sym
Characteristic
Min
FIN Input Frequency Range
2
FMIN Minimum Output Frequency from the
—
Frequency Multiplier
FMAX Maximum Output Frequency from the
96
Frequency Multiplier
FSLEW Maximum Step Function of FIN at which
-4
the PLL will be Ensured to Maintain Lock
TLOCK Lock Time for VCO
—
JFM8 Cumulative Jitter of Frequency Multiplier
—
Over Voltage and Temperature during Any
Eight Consecutive Cycles of the PLL Output
Typ Max Units
Conditions
—
24
MHz
—
16
MHz 4 MHz FIN with 4x feedback ratio,
2 MHz FIN with 8x feedback ratio
—
—
MHz 4 MHz FIN with 24x net multiplication ratio,
24 MHz FIN with 4x net multiplication ratio
—
+4
% Full input range of FIN
—
24
s With the specified minimum, TREF, and a
lock timer count of one cycle, this is the
maximum VCO lock time supported
—
±0.12
%
4 MHz FIN with 4x feedback ratio
TABLE 32-20: INTERNAL RC ACCURACY
AC CHARACTERISTICS
Standard Operating Conditions: 2.0V 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 @ 8 MHz
-1.5 +0.15 1.5
% 2.0V  VDD 3.6V, 0°C  TA +85°C
(Note 1)
-2
—
2
% 2.0V  VDD 3.6V, -40°C  TA 0°C
F21
LPRC @ 31 kHz
-20
—
20
% VCAP Output Voltage = 1.8V
F22
OSCTUN Step-Size
—
0.1
— %/bit
Note 1: To achieve this accuracy, physical stress applied to the microcontroller package (ex., by flexing the PCB)
must be kept to a minimum.
TABLE 32-21: RC OSCILLATOR START-UP TIME
AC CHARACTERISTICS
Standard Operating Conditions: 2.0V to 3.6V (unless otherwise stated)
Operating temperature
-40°C  TA  +85°C for Industrial
Param
No.
Symbol
Characteristic
Min
Typ
Max Units
FR0 TFRC FRC Oscillator Start-up
—
15
—
s
Time
FR1 TLPRC Low-Power RC Oscillator —
50
—
s
Start-up Time
Conditions
DS30010118B-page 370
 2016 Microchip Technology Inc.