 2003 Microchip Technology Inc.

Preliminary

DS41222A-page 1

DEVICE MIGRATIONS

This document is intended to describe the functional differences that are present when migrating from the PIC16C505

to the PIC16F505.

Table 1 shows the considerations that must be taken into account when migrating from the PIC16C505 to the

PIC16F505.

TABLE 1:

PIC16C505

→ PIC16F505 MIGRATION DIFFERENCES

TABLE 2:

PIC16C505

→ PIC16F505 NEW FEATURES

Note 1: 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

differences in the manufacture of this device, this device may have different performance characteristics

than its earlier version. These differences may cause this device to perform differently in your application

than the earlier version of this device.

2: 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.

Functional Differences

No.

Difference

H/W

S/W

Prog.

1

Programming algorithm change,

PIC16F505 uses a new programming

algorithm

——

✔

2

Program memory code protection,

bits 11-6 now unimplemented

—

✔

—

3

Operating regions

✔

——

4

OSCCAL, one extra OSCCAL

calibration bit has been added

—

✔

—

Legend: H/W – Issues may exist with regard to the application circuit.

S/W – Issues may exist with regard to the user program.

Programming – Issues may exist with regard to programming the device.

No.

Feature

1

PIC16F505 has 1024 words of Flash program memory

2

EC Mode Oscillator

Legend: H/W – Issues may exist with regard to the application circuit.

S/W – Issues may exist with regard to the user program.

Programming – Issues may exist with regard to programming the device.

PIC16C505

→ PIC16F505 Migration