PIC18F45J10 FAMILY
migrating an application across device families to
achieve a new design goal. These are summarized in
Table B-1. The areas of difference which could be a
major impact on migration are discussed in greater
detail later in this section.
APPENDIX B: MIGRATION
BETWEEN HIGH-END
DEVICE FAMILIES
Devices in the PIC18F45J10 family and PIC18F4520
families are very similar in their functions and feature
sets. However, there are some potentially important
differences which should be considered when
TABLE B-1:
NOTABLE DIFFERENCES BETWEEN PIC18F45J10 AND PIC18F4520 FAMILIES
Characteristic
PIC18F45J10 Family
PIC18F4520 Family
Operating Frequency
Supply Voltage
40 MHz @ 2.15V
40 MHz @ 4.2V
2.0V-3.6V
2.0V-5.5V
Operating Current
Program Memory Endurance
I/O Sink/Source at 25 mA
Input Voltage Tolerance on I/O pins
I/O
Low
1,000 write/erase cycles (typical)
PORTB and PORTC only
5.5V on digital only pins
32
Lower
100,000 write/erase cycles (typical)
All ports
VDD on all I/O pins
36
Pull-ups
PORTB
PORTB
Oscillator Options
Limited options
(EC, HS, fixed 32 kHz INTRC)
More options (EC, HS, XT, LP, RC,
PLL, flexible INTRC)
Program Memory Retention
Programming Time (Normalized)
Programming Entry
10 years (minimum)
156 μs/byte (10 ms/64-byte block)
Low Voltage, Key Sequence
Single block, all or nothing
40 years (minimum)
15.6 μs/byte (1 ms/64-byte block)
VPP and LVP
Code Protection
Multiple code protection blocks
Configuration Words
Stored in last 4 words of
Program Memory space
Stored in Configuration Space,
starting at 300000h
Start-up Time from Sleep
Power-up Timer
Data EEPROM
Brown-out Reset
LVD
200 μs (typical)
Always on
10 μs (typical)
Configurable
Available
Not available
Simple BOR(1)
Not available
Required
Programmable BOR
Available
A/D Calibration
In-Circuit Emulation
TMR3
Not required
Available
Not available
Not available
Available(2)
Available
Second MSSP
Not available
Note 1: Brown-out Reset is not available on PIC18LFXXJ10 devices.
2: Available on 40/44-pin devices only.
DS39682E-page 350
© 2009 Microchip Technology Inc.
MICROCHIP [ MICROCHIP ]
