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PIC32MX320F032H_11 Datasheet, PDF (163/214 Pages) Microchip Technology – High-Performance, General Purpose and USB, 32-bit Flash Microcontrollers | |||
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PIC32MX3XX/4XX
TABLE 29-18: PLL CLOCK TIMING SPECIFICATIONS (VDD = 2.3V TO 3.6V)
AC CHARACTERISTICS
Standard Operating Conditions: 2.3V to 3.6V
(unless otherwise stated)
Operating temperature -40°C â¤TA â¤+85°C for Industrial
-40°C â¤TA â¤+105°C for V-Temp
Param.
No.
Symbol
Characteristics(1)
Min. Typical Max. Units
Conditions
OS50 FPLLI
PLL Voltage Controlled
Oscillator (VCO) Input
Frequency Range
4
â
5 MHz ECPLL, HSPLL, XTPLL,
FRCPLL modes
OS51 FSYS On-Chip VCO System
60
â
120 MHz
â
Frequency
OS52 TLOCK PLL Start-up Time (Lock Time) â
â
2
ms
â
OS53 DCLK CLKO Stability(2)
-0.25
â
+0.25 % Measured over 100 ms
(Period Jitter or Cumulative)
period
Note 1: These parameters are characterized, but not tested in manufacturing.
2: This jitter specification is based on clock-cycle by clock-cycle measurements. To get the effective jitter for
individual time-bases on communication clocks, use the following formula:
EffectiveJitter = -------------------------D----C----L---K--------------------------
------------------S----Y---S----C----L----K--------------------
CommunicationClock
For example, if SYSCLK = 80 MHz and SPI bit rate = 20 MHz, the effective jitter is as follows:
EffectiveJitter = D-----C----L--K-- = -D----C----L--K--
8---0--
2
20
TABLE 29-19: INTERNAL FRC ACCURACY
AC CHARACTERISTICS
Standard Operating Conditions: 2.3V to 3.6V
(unless otherwise stated)
Operating temperature -40°C â¤TA â¤+85°C for Industrial
-40°C â¤TA â¤+105°C for V-Temp
Param.
No.
Characteristics
Min. Typical Max. Units
Conditions
Internal FRC Accuracy @ 8.00 MHz(1)
F20 FRC
-2
â
+2
%
â
Note 1: Frequency calibrated at 25°C and 3.3V. TUN bits can be used to compensate for temperature drift.
TABLE 29-20: INTERNAL RC ACCURACY
AC CHARACTERISTICS
Standard Operating Conditions: 2.3V to 3.6V
(unless otherwise stated)
Operating temperature -40°C â¤TA â¤+85°C for Industrial
-40°C â¤TA â¤+105°C for V-Temp
Param.
No.
Characteristics
Min. Typical Max. Units
Conditions
LPRC @ 31.25 kHz(1)
F21 LPRC
-15
â
+15
%
â
Note 1: Change of LPRC frequency as VDD changes.
© 2011 Microchip Technology Inc.
DS61143H-page 163
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