Intel 87C196CB Manual De Usuario

3-2

FFFFFF

FF2080

Program memory (After a device reset, the first instruction fetch 
is from FF2080H) 

†

Indirect, indexed, extended

FF207F
FF2000

Special purpose memory 

†

Indirect, indexed, extended

FF1FFF

FF0600

External device (memory or I/O) connected to address/data bus

Indirect, indexed, extended

FF05FF

FF0400

Internal code and data RAM 
(mapped identically into pages FFH and 00H)

Indirect, indexed, extended

FF03FF

FF0100

External device (memory or I/O) connected to address/data bus

Indirect, indexed, extended

FF00FF

FF0000

Reserved 

††

Indirect, indexed, extended

FEFFFF

0F0000

100-pin 87C196CB:  External device (memory or I/O) 
84-pin 87C196CB:

 Overlaid memory 

††

Indirect, indexed, extended

0EFFFF

010000

External device (memory or I/O) connected to address/data bus

Indirect, indexed, extended

00FFFF

002000

External device or remapped OTPROM 

†††

Indirect, indexed, extended

001FFF
001FE0

Memory-mapped SFRs

Indirect, indexed, extended 

001FDF

001F00

Peripheral SFRs

Indirect, indexed, extended, 

windowed direct

001EFF

001E00

CAN SFRs

Indirect, indexed, extended

001DFF

001C00

Internal register RAM

Indirect, indexed, 

windowed direct

001BFF

000600

External device (memory or I/O) connected to address/data bus; 
future SFR expansion

Indirect, indexed, extended

0005FF

000400

Internal code and data RAM
(mapped identically into pages 00H and FFH)

Indirect, indexed, extended

0003FF

000100

Upper register file (register RAM)

Indirect, indexed, 

windowed direct

0000FF

000000

Lower register file (register RAM, stack pointer, CPU SFRs)

Direct, indirect, indexed

†

 For the 87C196CB, the program and special-purpose memory locations (FF2000-FFFFFFH) can reside 

either in external memory or in internal OTPROM.

††

 Locations xF0000-xF00FFH are reserved for in-circuit emulators. Do not use these locations except to 

initialize them. Except as otherwise noted, initialize unused program memory locations and reserved 
memory locations to FFH.

†††

 These locations can be either external memory (CCB2.2=0) or a copy of the OTPROM (CCB2.2=1).