Datasheet

 2010-2013 Microchip Technology Inc. DS40001430E-page 241
PIC16(L)F720/721
APPENDIX A: DATA SHEET
REVISION HISTORY
Revision A (September 2010)
Original release of this document.
Revision B (March 2011)
Updated the Electrical Specifications section.
Revision C (September 2011)
Reviewed title; Updated Table 1 and Table 1-1;
Reviewed the Memory Organization section; Updated
Section 3.6, Figures 3-4 and 3-5, Register 4-1 and
Figure 4-2; Updated Registers 8-1 and 8-2; Reviewed
the Oscillator Module section; Updated Table 10-1,
Figures 11-1, 12-1 and Register 18-1; Updated the
Summary of Registers Tables; Updated the Electrical
Specifications section; Updated the DC and AC
Characteristics Graphs and Charts section; Updated
the Packaging Information section; Updated the
Product Identification System section.
Revision D (February 2013)
Updated Table 1-1, Table 15-4 and Table 16-5;
Updated the Electrical Specifications section; Updated
the DC and AC Characteristics Graphs and Charts
section; Other minor corrections.
Revision E (August 2013)
Deleted Example 18-2; Revised Table 23-7.
APPENDIX B: MIGRATING FROM
OTHER PIC
®
DEVICES
This shows a comparison of features in the migration
from another PIC
®
device, the PIC16F720, to the
PIC16F721 device.
B.1 PIC16F690 to PIC16F721
TABLE B-1: FEATURE COMPARISON
Feature PIC16F690 PIC16F721
Max. Operating Speed 20 MHz 16 MHz
Max. Program
Memory (Words)
4K 4K
Max. SRAM (Bytes) 256 256
A/D Resolution 10-bit 8-bit
Timers (8/16-bit) 2/1 2/1
Oscillator Modes 8 4
Brown-out Reset Y Y
Internal Pull-ups RA<5:0>,
RB<7:4>
RA<5:0>,
RB<7:4>
Interrupt-on-change RA<5:0>,
RB<7:4>
RA<5:0>,
RB<7:4>
Comparator 2 0
EUSART Y Y
Extended WDT Y N
Software Control
Option of WDT/BOR
YN
INTOSC Frequencies 31 kHz -
8MHz
500 kHz -
16 MHz
Pin Count 20 20
Note: This device has been designed to perform
to the parameters of its data sheet. It has
been tested to an electrical specification
designed to determine its conformance
with these parameters. Due to process dif-
ferences in the manufacture of this device,
this device may have different perfor-
mance characteristics than its earlier ver-
sion. These differences may cause this
device to perform differently in your appli-
cation than the earlier version of this
device.
Note: The user should verify that the device
oscillator starts and performs as
expected. Adjusting the loading capacitor
values and/or the oscillator mode may be
required.