Datasheet

PIC18F2455/2550/4455/4550
DS39632E-page 388 © 2009 Microchip Technology Inc.
TABLE 28-9: PLL CLOCK TIMING SPECIFICATIONS (VDD = 3.0V TO 5.5V)
TABLE 28-10: AC CHARACTERISTICS: INTERNAL RC ACCURACY
PIC18F2455/2550/4455/4550 (INDUSTRIAL)
PIC18LF2455/2550/4455/4550 (INDUSTRIAL)
Param
No.
Sym Characteristic Min Typ† Max Units Conditions
F10 F
OSC Oscillator Frequency Range 4 — 48 MHz With PLL
prescaler
F11 F
SYS On-Chip VCO System Frequency — 96 — MHz
F12 t
rc
PLL Start-up Time (Lock Time) — — 2 ms
F13 ΔCLK CLKO Stability (Jitter) -0.25 — +0.25 %
† Data in “Typ” column is at 5V, 25°C unless otherwise stated. These parameters are for design guidance
only and are not tested.
PIC18LF2455/2550/4455/4550
(Industrial)
Standard Operating Conditions (unless otherwise stated)
Operating temperature -40°C ≤ T
A ≤ +85°C for industrial
PIC18F2455/2550/4455/4550
(Industrial)
Standard Operating Conditions (unless otherwise stated)
Operating temperature -40°C ≤ T
A ≤ +85°C for industrial
Param
No.
Device Min Typ Max Units Conditions
INTOSC Accuracy @ Freq = 8 MHz, 4 MHz, 2 MHz, 1 MHz, 500 kHz, 250 kHz, 125 kHz
(1)
F14 PIC18LF2455/2550/4455/4550 -2 +/-1 2 % +25°C VDD = 2.7-3.3V
F15 -5 — 5 % -10°C to +85°C VDD = 2.7-3.3V
F16 -10 +/-1 10 % -40°C to +85°C V
DD = 2.7-3.3V
F17 PIC18F2455/2550/4455/4550 -2 +/-1 2 % +25°C VDD = 4.5-5.5V
F18 -5 — 5 % -10°C to +85°C VDD = 4.5-5.5V
F19 -10 +/-1 10 % -40°C to +85°C VDD = 4.5-5.5V
INTRC Accuracy @ Freq = 31 kHz
(2)
F20 PIC18LF2455/2550/4455/4550 26.562 — 35.938 kHz -40°C to +85°C VDD = 2.7-3.3V
F21 PIC18F2455/2550/4455/4550 26.562 — 35.938 kHz -40°C to +85°C VDD = 4.5-5.5V
Legend: Shading of rows is to assist in readability of the table.
Note 1: Frequency calibrated at 25°C. OSCTUNE register can be used to compensate for temperature drift.
2: INTRC frequency after calibration.
3: Change of INTRC frequency as V
DD changes.