Manualshelf

Information

ManualsBrandsMICROCHIP TECHNOLOGY ManualsMicrocontrollers, Microprocessors & QuartzesEmbedded microcontroller SPDIP 28 8-Bit 40 MHz I/O number 25
12345678
© 2008 Microchip Technology Inc. DS80334B-page 1
PIC18F2220/2320/4220/4320
Clarifications/Corrections to the Data
Sheet:
In the Device Data Sheet (DS39599G), the following
clarifications and corrections should be noted. Any sili-
con issues related to the PIC18F2220/2320/4220/4320
will be reported in a separate silicon errata. Please
check the Microchip web site for any existing issues.
1. Module: Power-Managed Modes
• In the third paragraph of Section 3.3.3 “RC_IDLE
Mode” on page 35, the IOFS bit set time is
changed. The modified value is indicated in bold
text:
If the IRCF bits are set to a non-zero value (thus
enabling the INTOSC output), the IOFS bit becomes
set after the INTOSC output becomes stable, in
about 128 μs.
• In the sixth paragraph of Section 3.4.3 “RC_RUN
Mode” on page 37, the INTOSC clock source
stabilizing time has changed. The modified value
is indicated in bold text in the following excerpt of
the section:
If the IRCF bits are changed from all clear (thus
enabling the INTOSC output), the IOFS bit becomes
set after the INTOSC output becomes stable. Clocks
to the system continue while the INTOSC source
stabilizes in approximately 128 μs.
2. Module: Oscillator Configurations
(INTRC)
• The first, third, fourth and fifth paragraphs of
Section 2.6.2 “OSCTUNE Register” on page 23
have been modified:
- First paragraph:
The internal oscillator block is calibrated at the
factory to produce an INTOSC output frequency of
approximately 8 MHz. (See parameters F14
through F19 in Table 26-8).
- Third paragraph:
The tuning sensitivity is constant throughout
the tuning range. This sentence is deleted.
- Fourth paragraph:
OSCTUNE register does not affect the INTRC
frequency. The modified value is indicated in bold
text.
When the OSCTUNE register is modified, the
INTOSC frequency begins shifting to the new
frequency. The INTOSC clock will stabilize at
the new frequency within 100 µs. Code
execution continues during this shift.
- Fifth paragraph:
Except for the first sentence (There is no
indication when the shift occurs), the remaining
content is deleted.
PIC18F2220/2320/4220/4320 Data Sheet Errata

Summary of content (8 pages)