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PIC16F873A-E/ML 用户编程技术手册 - Microchip(微芯)
制造商:
Microchip(微芯)
分类:
微控制器
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QFN-28
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PIC16F873A-E/ML数据手册
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PIC16F87XA
DS39589C-page 4 Advance Information 2010 Microchip Technology Inc.
2.3 ID Locations
A user may store identification information (ID) in four
ID locations. The ID locations are mapped in addresses
2000h - 2003h. 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 after code protection is enabled.
For these devices, it is recommended that ID location
is 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 5-1.
FIGURE 2-1: PIC16F87XA PROGRAM MEMORY MAPPING
4K word
devices
8K word
devices
Implemented Implemented
Implemented Implemented
Implemented Implemented
Implemented Implemented
Implemented
Reserved Implemented
Implemented
Implemented
Reserved Reserved
Reserved Reserved
ID Location
ID Location
ID Location
ID Location
Reserved
Reserved
Device ID
Configuration Word
2000h
2001h
2002h
2003h
2004h
2005h
2006h
2007h
000h
3FFh
400h
7FFh
800h
BFFh
C00h
FFFh
1000h
1FFFh
2008h
2100h
3FFFh
13FFh
1400h
17FFh
1800h
1BFFh
1C00h
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