Microchip Technology MA330027 Data Sheet
2009-2012 Microchip Technology Inc.
DS70616G-page 513
dsPIC33EPXXX(GP/MC/MU)806/810/814 and PIC24EPXXX(GP/GU)810/814
TABLE 32-17: PLL CLOCK TIMING SPECIFICATIONS
AC CHARACTERISTICS
Standard Operating Conditions: 3.0V to 3.6V (unless otherwise stated)
Operating temperature
Operating temperature
-40°C
T
A
+85°C for Industrial
-40°C
T
A
+125°C for Extended
Param. Symbol
Characteristic
Min.
Typ.
Max.
Units
Conditions
OS50
F
PLLI
PLL Voltage Controlled
Oscillator (VCO) Input
Frequency Range
Oscillator (VCO) Input
Frequency Range
0.8
—
8.0
MHz ECPLL, XTPLL modes
OS51
F
SYS
On-Chip VCO System
Frequency
Frequency
120
—
340
MHz
OS52
T
LOCK
PLL Start-up Time (Lock Time)
0.9
1.5
3.1
mS
OS53
D
CLK
CLKO Stability (Jitter)
-5
0.5
5
%
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: This jitter specification is based on clock cycle-by-clock cycle measurements. To get the effective jitter for
individual time bases or communication clocks used by the application, use the following formula:
For example, if F
OSC
= 120 MHz and the SPI bit rate = 10 MHz, the effective jitter is as follows:
Effective Jitter
D
CLK
F
OSC
Time Base or Communication Clock
---------------------------------------------------------------------------------------
-------------------------------------------------------------------------------------------
=
Effective Jitter
D
CLK
120
10
---------
--------------
D
CLK
12
--------------
D
CLK
3.464
--------------
=
=
=
TABLE 32-18: AUXILIARY PLL CLOCK TIMING SPECIFICATIONS
(dsPIC33EPXXXMU8XX AND PIC24EPXXXGU8XX DEVICES ONLY)
AC CHARACTERISTICS
Standard Operating Conditions: 3.0V to 3.6V (unless otherwise
stated)
Operating temperature
stated)
Operating temperature
-40°C
T
A
+85°C for Industrial
-40°C
T
A
+125°C for Extended
Param. Symbol
Characteristic
Min.
Typ.
Max.
Units
Conditions
OS54
AF
PLLI
PLL Voltage Controlled
Oscillator (VCO) Input
Frequency Range
Oscillator (VCO) Input
Frequency Range
3
—
5.5
MHz ECPLL, XTPLL modes
OS55
AF
SYS
On-Chip VCO System
Frequency
Frequency
60
—
120
MHz
OS56
AT
LOCK
PLL Start-up Time (Lock Time)
0.9
1.5
3.1
mS
OS57
AD
CLK
CLKO Stability (Jitter)
-2
0.25
2
%
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.