Datasheet

54
AT89C51AC3
4383D–8051–02/08
Sharing Instructions Table 19. Instructions shared
Note: by cl : using Column Latch
Table 20. Read MOVX A, @DPTR
Table 21. Write MOVX @DPTR,A
Action RAM
XRAM
ERAM
EEPROM
DATA
Boot
FLASH FM0
Hardware
Byte XROW
Read MOV MOVX MOVX MOVC MOVC MOVC MOVC
Write MOV MOVX MOVX - by cl by cl by cl
EEE bit in
EECON
Register
FPS in
FCON Register ENBOOT EA
XRAM
ERAM
EEPROM
DATA
Flash
Column
Latch
0 0 X X OK
0 1 X X OK
1 0 X X OK
1 1 X X OK
EEE bit in
EECON
Register
FPS bit in
FCON Register ENBOOT EA
XRAM
ERAM
EEPROM
Data
Flash
Column
Latch
0 0 X X OK
0 1 X
1 OK
0 OK
1 0 X X OK
1 1 X
1 OK
0 OK