PIC24FJ16MC101_12 Datasheet, PDF (270/350 Pages) Microchip Technology – 16-bit Microcontrollers (up to 32 KB Flash and 2 KB SRAM)

PIC24FJ16MC101/102 AND PIC24FJ32MC101/102/104
TABLE 26-17: PLL CLOCK TIMING SPECIFICATIONS
AC CHARACTERISTICS
Standard Operating Conditions: 3.0V to 3.6V (unless otherwise stated)
Operating temperature -40°C ≤ TA ≤ +85°C for Industrial
-40°C ≤ TA ≤ +125°C for Extended
Param
No.
Symbol
Characteristic
Min Typ⁽¹⁾ Max Units
Conditions
OS50 FPLLI
PLL Voltage Controlled
Oscillator (VCO) Input
Frequency Range⁽²⁾
3.0
—
8
MHz ECPLL and MSPLL
modes
OS51 FSYS
On-Chip VCO System
Frequency⁽³⁾
12
—
32 MHz
—
OS52 TLOCK PLL Start-up Time (Lock Time)⁽³⁾
—
—
2
ms
—
OS53 DCLK CLKO Stability (Jitter)⁽³⁾
-2
1
+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.
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
based on clock cycle by clock cycle measurements. The effective jitter for individual time bases or commu-
nication clocks used by the user application, are derived from dividing the CLKO stability specification by
the square root of “N” (where “N” is equal to FOSC divided by the peripheral data rate clock). For example,
if FOSC = 32 MHz and the SPI bit rate is 5 MHz, the effective jitter of the SPI clock is equal to:
D_-----C_----L_---K_{- = --2---%---- = 0.79%}
3---2-- ^2.53
5
TABLE 26-18: AC CHARACTERISTICS: INTERNAL FAST RC (FRC) ACCURACY
AC CHARACTERISTICS
Standard Operating Conditions: 3.0V to 3.6V (unless otherwise stated)
Operating temperature
-40°C ≤ TA ≤ +85°C for Industrial
-40°C ≤ TA ≤ +125°C for Extended
Param
No.
Characteristic
Min Typ Max Units
Conditions
Internal FRC Accuracy @ 7.3728 MHz⁽¹⁾
F20a FRC
-1.5 ±0.25 +1.5
% -40°C ≤ TA ≤ +85°C
F20b FRC
-2 ±0.25 +2
% -40°C ≤ TA ≤ +125°C
Note 1: Frequency calibrated at 25°C and 3.3V. TUN bits may be used to compensate for temperature drift.
TABLE 26-19: INTERNAL LOW-POWER RC (LPRC) ACCURACY
AC CHARACTERISTICS
Standard Operating Conditions: 3.0V to 3.6V (unless otherwise stated)
Operating temperature -40°C ≤ TA ≤ +85°C for Industrial
-40°C ≤ TA ≤ +125°C for Extended
Param
No.
Characteristic
Min Typ Max Units
Conditions
LPRC @ 32.768 kHz^(1,2)
F21a LPRC
-20
±10 +20
% -40°C ≤ TA ≤ +85°C
F21b LPRC
-30
±10 +30
% -40°C ≤ TA ≤ +125°C
Note 1: Change of LPRC frequency as VDD changes.
2: LPRC accuracy impacts the Watchdog Timer Time-out Period (TWDT1). See Section 23.4 “Watchdog
Timer (WDT)” for more information.
DS39997C-page 270
Preliminary
© 2011-2012 Microchip Technology Inc.