8XC196NU Datasheet, PDF (23/43 Pages) Intel Corporation – 8XC196NU COMMERCIAL CHMOS 16-BIT MICROCONTROLLER

8XC196NU COMMERCIAL CHMOS 16-BIT MICROCONTROLLER
5.0 ADDRESS MAP
Table 9. 8XC196NU Address Map
Hex
Address
Description
Addressing Modes
FF FFFFH
FF E000H
External device (memory or I/O) connected to address/data bus
Indirect, indexed, extended
FF DFFFH
FF 2080H
Program memory (Note 1)
Indirect, indexed, extended
FF 207FH
FF 2000H
Special-purpose memory (Note 1)
Indirect, indexed, extended
FF 1FFFH
FF 0100H
External device (memory or I/O) connected to address/data bus
Indirect, indexed, extended
FF 00FFH
FF 0000H
Reserved for ICE (Note 2)
—
FE FFFFH
0F 0000H
Overlaid memory (reserved for future devices) (Note 2)
Indirect, indexed, extended
0E FFFFH
01 0000H
External device (memory or I/O) connected to address/data bus
Indirect, indexed, extended
00 FFFFH
00 E000H
External device (memory or I/O) connected to address/data bus
Indirect, indexed, extended
00 DFFFH External device (memory or I/O) connected to address/data bus
00 2000H or remapped internal ROM (determined by EA# pin) (Note 3)
Indirect, indexed, extended
00 1FFFH
00 1F00H
Internal peripheral special-function registers (SFRs) (Note 4)
Indirect, indexed,
extended, windowed direct
00 1EFFH
00 0400H
External device (memory or I/O) connected to address/data bus
Indirect, indexed, extended
00 03FFH
00 0100H
Upper register file (general-purpose register RAM)
Indirect, indexed,
windowed direct
00 00FFH
00 001AH
Lower register file (general-purpose register RAM)
Direct, indirect, indexed,
windowed direct
00 0019H
00 0018H
Lower register file (stack pointer)
Direct, indirect, indexed,
windowed direct
00 0017H
00 0000H
Lower register file (CPU SFRs) (Note 4)
Direct, indirect, indexed,
windowed direct
NOTES:
1. For the 80C196NU, the program and special-purpose memory locations (FF2000–FFDFFFH) reside
in external memory. For the 83C196NU, these locations can reside either in external memory or in
internal ROM.
2. Locations xF0000–xF00FFH are reserved, write 0FFH to these locations.
3. For the 80C196NU, this address range (FF2080–FFDFFFH) is always external memory. For the
83C196NU, this address range is mapped into internal ROM if the REMAP bit (CCB1.2) is set and
EA# is at logic 1. Otherwise, they are mapped to external memory.
4. Unless otherwise noted, write 0 to reserved SFR bits.
PRELIMINARY
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