PIC17C4X Datasheet, PDF (212/240 Pages) Microchip Technology – High-Performance 8-Bit CMOS EPROM/ROM Microcontroller

PIC17C4X
APPENDIX C: WHAT’S NEW
The structure of the document has been made consis-
tent with other data sheets. This ensures that important
topics are covered across all PIC16/17 families. Here is
an overview of new features.
Added the following devices:
PIC17CR42
PIC17C42A
PIC17CR43
A 33 MHz option is now available.
APPENDIX D: WHAT’S CHANGED
To make software more portable across the different
PIC16/17 families, the name of several registers and
control bits have been changed. This allows control bits
that have the same function, to have the same name
(regardless of processor family). Care must still be
taken, since they may not be at the same special func-
tion register address. The following shows the register
and bit names that have been changed:
Old Name
TX8/9
RC8/9
RCD8
TXD8
New Name
TX9
RX9
RX9D
TX9D
Instruction DECFSNZ corrected to DCFSNZ
Instruction INCFSNZ corrected to INFSNZ
Enhanced discussion on PWM to include equation for
determining bits of PWM resolution.
Section 13.2.2 and 13.3.2 have had the description of
updating the FERR and RX9 bits enhanced.
The location of configuration bit PM2 was changed
(Figure 6-1 and Figure 14-1).
Enhanced description of the operation of the INTSTA
register.
Added note to discussion of interrupt operation.
Tightened electrical spec D110.
Corrected steps for setting up USART Asynchronous
Reception.
DS30412C-page 212
© 1996 Microchip Technology Inc.