PIC16F87 datasheet(6/24 Pages) MICROCHIP

6 / 24 page

PIC16F87/88

DS39607B-page 6

 2002 Microchip Technology Inc.

3.3

ID Locations

A user may store identification information (ID) in four

ID locations. The ID locations are mapped in

[0x2000:0x2003]. It is recommended that the user use

only the four Least Significant bits of each ID location.

In some devices, the ID locations read out in an

unscrambled fashion once code-protection is enabled.

For these devices, it is recommended that ID location

be written as “11 1111 1000 bbbb”, where ‘bbbb’ is

ID information.

In other devices, the ID locations read out normally,

even after code protection. To understand how the

devices behave, refer to Table 6-1.

FIGURE 3-1:

PROGRAM MEMORY MAPPING

4K words

Implemented

Accesses

0x0000 to

0x0FFF

Reserved

ID Location

Reserved

Device ID

Configuration Word 1

Configuration Word 2

2000h

2001h

2002h

2003h

2004h

2005h

2006h

2007h

FFFh

1FFFh

2009h

3FFFh

2008h

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