Information

© 2006 Microchip Technology Inc. DS80274A-page 3
PIC18F2450/4450
5. Module: Electrical Characteristics
In Section 21.3 “DC Characteristics”, the
parameters D031 (V
IL) and D041 (VIH) are not
valid and are deleted from the table.
6. Module: Electrical Characteristics
In Section 21.4 “AC (Timing) Characteristics”,
the title of Table 21-7 specifies a V
DD range of
4.2V to 5.5V for values presented in the table. The
correct range is 3.0V to 5.5V.
7. Module: Electrical Characteristics
In Section 21.4 “AC (Timing) Characteristics”,
Table 21-6 has been updated to reflect the correct
range of XT and HSPLL mode operation. The
changes are shown below in bold text.
TABLE 21-6: EXTERNAL CLOCK TIMING REQUIREMENTS
Param.
No.
Symbol Characteristic Min. Max. Units Conditions
1A F
OSC External CLKI Frequency
(1)
Oscillator Frequency
(1)
DC 48 MHz EC, ECIO Oscillator mode
0.2 1 MHz XT, XTPLL Oscillator mode
4 25 MHz HS Oscillator mode
4 25 MHz HSPLL Oscillator mode
1T
OSC External CLKI Period
(1)
Oscillator Period
(1)
20.8 — ns EC, ECIO Oscillator mode
1,000 5,000 ns XT Oscillator mode
40
40
250
250
ns
ns
HS Oscillator mode
HSPLL Oscillator mode