Datasheet

ManualsBrandsMICROCHIP TECHNOLOGY ManualsMicrocontrollers, Microprocessors & QuartzesEmbedded microcontroller SSOP 28 8-Bit 40 MHz I/O number 21

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PIC18F45J10 FAMILY

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

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.

TABLE B-1: NOTABLE DIFFERENCES BETWEEN PIC18F45J10 AND PIC18F4520 FAMILIES

Characteristic PIC18F45J10 Family PIC18F4520 Family

Operating Frequency 40 MHz @ 2.15V 40 MHz @ 4.2V

Supply Voltage 2.0V-3.6V 2.0V-5.5V

Operating Current Low Lower

Program Memory Endurance 1,000 write/erase cycles (typical) 100,000 write/erase cycles (typical)

I/O Sink/Source at 25 mA PORTB and PORTC only All ports

Input Voltage Tolerance on I/O pins 5.5V on digital only pins V

DD on all I/O pins

I/O 32 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 10 years (minimum) 40 years (minimum)

Programming Time (Normalized) 156 μs/byte (10 ms/64-byte block) 15.6 μs/byte (1 ms/64-byte block)

Programming Entry Low Voltage, Key Sequence V

PP and LVP

Code Protection Single block, all or nothing 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 200 μs (typical) 10 μs (typical)

Power-up Timer Always on Configurable

Data EEPROM Not available Available

Brown-out Reset Simple BOR

(1)

Programmable BOR

LVD Not available Available

A/D Calibration Required Not required

In-Circuit Emulation Not available Available

TMR3 Not available Available

Second MSSP Available

(2)

Not available

Note 1: Brown-out Reset is not available on PIC18LFXXJ10 devices.

2: Available on 40/44-pin devices only.