Microchip Technology MA180025 数据表
2010 Microchip Technology Inc.
DS39933D-page 411
PIC18F87J90 FAMILY
TABLE 28-8:
PLL CLOCK TIMING SPECIFICATIONS (V
DD
= 2.15V TO 3.6V)
TABLE 28-9:
INTERNAL RC ACCURACY (INTOSC AND INTRC SOURCES)
Param
No.
Sym
Characteristic
Min
Typ†
Max
Units
Conditions
F10
F
OSC
Oscillator Frequency Range
4
—
10
MHz HS mode only
F11
F
SYS
On-Chip VCO System Frequency
16
—
40
MHz HS mode only
F12
t
rc
PLL Start-up Time (Lock Time)
—
—
2
ms
F13
CLK
CLKO Stability (Jitter)
-2
—
+2
%
† Data in “Typ” column is at 3.3V, 25
C, unless otherwise stated. These parameters are for design guidance
only and are not tested.
PIC18F87J90 Family
(Industrial)
(Industrial)
Standard Operating Conditions (unless otherwise stated)
Operating temperature
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, 31 kHz
(1)
All Devices
-2
+/-1
2
%
+25°C
V
DD
= 2.7-3.3V
-5
—
5
%
-10°C to +85°C
V
DD
= 2.0-3.3V
-10
+/-1
10
%
-40°C to +85°C
V
DD
= 2.0-3.3V
INTRC Accuracy @ Freq = 31 kHz
(1)
All Devices
21.7
—
40.3
kHz
-40°C to +85°C
V
DD
= 2.0-3.3V
Note 1:
The accuracy specification of the 31 kHz clock is determined by which source is providing it at a given
time. When INTSRC (OSCTUNE<7>) is ‘1’, use the INTOSC accuracy specification. When INTSRC is ‘0’,
use the INTRC accuracy specification.
time. When INTSRC (OSCTUNE<7>) is ‘1’, use the INTOSC accuracy specification. When INTSRC is ‘0’,
use the INTRC accuracy specification.