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