Microchip Technology MA330016 Data Sheet
dsPIC33FJ32GP202/204 and dsPIC33FJ16GP304
DS70290J-page 222
© 2007-2011 Microchip Technology Inc.
TABLE 22-17: PLL CLOCK TIMING SPECIFICATIONS (V
DD
= 3.0V TO 3.6V)
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
No.
Symbol
Characteristic
Min
Typ
(1)
Max
Units
Conditions
OS50
F
PLLI
PLL Voltage Controlled
Oscillator (VCO) Input
Frequency Range
Oscillator (VCO) Input
Frequency Range
(2)
0.8
—
8
MHz ECPLL, XTPLL modes
OS51
F
SYS
On-Chip VCO System
Frequency
Frequency
(3)
100
—
200
MHz
—
OS52
T
LOCK
PLL Start-up Time (Lock Time)
(3)
0.9
1.5
3.1
ms
—
OS53
D
CLK
CLKO Stability (Jitter)
(3)
-3
0.5
3
%
Measured over 100 ms
period
period
Note 1: Data in “Typ” column is at 3.3V, 25°C unless otherwise stated.
2: These parameters are characterized by similarity, but are tested in manufacturing at 7.7 MHz input only.
3: These parameters are characterized by similarity, but are not tested in manufacturing. This specification is
3: 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 bases
or communication clocks use this formula:
or communication clocks use this formula:
Peripheral Clock Jitter
D
CLK
F
OSC
Peripheral Bit Rate Clock
--------------------------------------------------------------
⎝
⎠
⎛
⎞
------------------------------------------------------------------------
=
For example: Fosc = 32 MHz, D
CLK
= 3%, SPI bit rate clock, (i.e., SCK) is 2 MHz.
SPI SCK Jitter
D
CLK
32 MHz
2 MHz
--------------------
⎝
⎠
⎛
⎞
------------------------------
3%
16
----------
3%
4
--------
0.75%
=
=
=
=
TABLE 22-18: AC CHARACTERISTICS: INTERNAL RC ACCURACY
AC CHARACTERISTICS
Standard Operating Conditions: 3.0V to 3.6V (unless otherwise stated)
Operating temperature
Operating temperature
-40°C
≤
TA
≤
+85°C for industrial
-40°C
≤ T
A
≤ +125°C for Extended
Param
No.
Characteristic
Min
Typ
Max
Units
Conditions
Internal FRC Accuracy @ FRC Frequency = 7.37 MHz
(1)
F20a
FRC
-2
—
+2
%
-40°C
≤ T
A
≤ +85°C
V
DD
= 3.0-3.6V
F20b
FRC
-5
—
+5
%
-40°C
≤ T
A
≤ +125°C
V
DD
= 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 22-19: INTERNAL RC ACCURACY
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
No.
Characteristic
Min
Typ
Max
Units
Conditions
LPRC @ 32.768 kHz
(1,2)
F21a
LPRC
-15
±6
+15
%
-40°C
≤ T
A
≤ +85°C
V
DD
= 3.0-3.6V
F21b
LPRC
-40
—
+40
%
-40°C
≤ T
A
≤ +125°C
V
DD
= 3.0-3.6V
Note 1: Change of LPRC frequency as V
DD
changes.
2: LPRC impacts the Watchdog Timer Time-out Period (T
WDT