![Intel 8XC196NT Скачать руководство пользователя страница 73](http://html1.mh-extra.com/html/intel/8xc196nt/8xc196nt_user-manual_2072210073.webp)
8XC196NT USER’S MANUAL
4-6
NOTE
We recommend that you write FFH (the opcode for the RST instruction) to
unused program memory locations. This causes a device reset if a program
unintentionally begins to execute in unused memory.
4.2.2.2
Special-purpose Memory
Special-purpose memory resides in locations FF2000–FF207FH (Table 4-4 on page 4-7). It con-
tains several reserved memory locations, the chip configuration bytes (CCBs), and vectors for
both peripheral transaction server (PTS) and standard interrupts.
— 80C196NT: This partition is in external memory (external addresses F2000–F207FH).
— 87C196NT: The REMAP bit (CCB2.2), the EA# input, and the type of instruction
(extended or nonextended) control access to this partition, as shown in Table 4-3.
Table 4-2. Program Memory Access for the 87C196NT
REMAP
(CCB2.2)
EA#
Instruction Type
Memory Location Accessed
X
asserted
extended or
nonextended
external memory, F2080–F9FFFH
0
deasserted
extended or
nonextended
internal OTPROM, FF2080–FF9FFFH
1
deasserted
extended
internal OTPROM, FF2080–FF9FFFH
nonextended
internal OTPROM, 002080–009FFFH
Table 4-3. Special-purpose Memory Access for the 87C196NT
REMAP
(CCB2.2)
EA#
Instruction
Type
Memory Location Accessed
X
asserted
extended or
nonextended
external memory, F2000–F207FH
0
deasserted
extended or
nonextended
internal OTPROM, FF2000–FF207FH
1
deasserted
extended
internal OTPROM, FF2000–FF207FH
nonextended
internal OTPROM, 002000–00207FH
Содержание 8XC196NT
Страница 1: ...8XC196NT Microcontroller User s Manual...
Страница 2: ...8XC196NT Microcontroller User s Manual June 1995 Order Number 272317 003...
Страница 22: ...1 Guide to This Manual...
Страница 23: ......
Страница 35: ......
Страница 36: ...2 Architectural Overview...
Страница 37: ......
Страница 49: ......
Страница 50: ...3 Programming Considerations...
Страница 51: ......
Страница 66: ...4 Memory Partitions...
Страница 67: ......
Страница 104: ...5 Standard and PTS Interrupts...
Страница 105: ......
Страница 147: ......
Страница 148: ...6 I O Ports...
Страница 149: ......
Страница 176: ...7 Serial I O SIO Port...
Страница 177: ......
Страница 194: ...8 Synchronous Serial I O SSIO Port...
Страница 195: ......
Страница 211: ......
Страница 212: ...9 Slave Port...
Страница 213: ......
Страница 231: ......
Страница 232: ...10 Event Processor Array EPA...
Страница 233: ......
Страница 270: ...11 Analog to digital Converter...
Страница 271: ......
Страница 291: ......
Страница 292: ...12 Minimum Hardware Considerations...
Страница 293: ......
Страница 306: ...13 Special Operating Modes...
Страница 307: ......
Страница 317: ......
Страница 318: ...14 Interfacing with External Memory...
Страница 319: ......
Страница 362: ...15 Programming the Nonvolatile Memory...
Страница 363: ......
Страница 408: ...A Instruction Set Reference...
Страница 409: ......
Страница 476: ...B Signal Descriptions...
Страница 477: ......
Страница 493: ......
Страница 494: ...C Registers...
Страница 495: ......
Страница 565: ......
Страница 566: ...Glossary...
Страница 567: ......
Страница 580: ...Index...
Страница 581: ......
Страница 597: ......