Information

© 2008 Microchip Technology Inc. DS80310G-page 27
PIC18F2221/2321/4221/4321
REVISION HISTORY
Rev A Document (3/2007)
Original version of this document. Includes Data Sheet
Clarifications 1 through 7, removing all ICPORT
references from the data sheet.
Rev B Document (4/2007)
Added Data Sheet Clarification 8 (Product Identification
System).
Rev C Document (5/2007)
Added Data Sheet Clarification 9 (EUSART).
Rev D Document (7/2007)
Added Data Sheet Clarification 10 (Packaging
Information).
Rev E Document (11/2007)
Modified Data Sheet Clarification 9 (EUSART) and
added Data Sheet Clarification 11 (Electrical
Characteristics).
R
ev F Document (1/2008)
Added Data Sheet Clarification 12 (Electrical
Characteristics, I/O Port Leakage Current).
Rev G Document (5/2008)
Modified Data Sheet Clarifications 11 (Electrical
Characteristics) and 12 (Electrical Characteristics, I/O
Port Leakage Current). Added Data Sheet Clarifica-
tions 13 (Peripheral Highlights) and 14 (A/D Converter
Characteristics).