83C51KB Datasheet, PDF (5/19 Pages) Intel Corporation – HIGH PERFORMANCE KEYBOARD MICROCONTROLLER

83C51KB HIGH PERFORMANCE KEYBOARD MICROCONTROLLER
4.0 83C51KB MEMORY
Code
Memory
Description
Table 3. 83C51KB Memory Map
FFFFH
0000H
External code memory
0FFFH
0000H
4-Kbyte on-chip code memory array.
Data
Memory
Description
FFFFH
0000H
External data memory
00FFH
0080H
Special function registers
007FH
0020H
On-chip RAM
001FH
0000H
4 banks of general purpose registers, R0-R7
NOTE:
1. The special function registers (SFRs) are accessible by direct addressing only.
2. Data in this area is accessible by indirect addressing only.
3. RD#/WR# active for these external data addresses.
4. PSEN# active for the external code addresses.
5. Addresses 20H through 2FH are bit addressable.
Notes
4
2, 3
1
5
5