AT89C51RE2_14 Datasheet, PDF (37/187 Pages) ATMEL Corporation – ISP (In-System Programming) Using Standard VCC Power Supply

FCON Register
AT89C51RE2
Table 23. FCON Register
FCON Register (S:D1h)
Flash Control Register
7
FPL3
6
FPL2
5
FPL1
4
FPL0
3
2
1
0
FPS
FMOD2
FMOD1
FMOD0
Bit
Bit Number Mnemonic Description
Programming Launch Command Bits
7-4
FPL3:0 Write 5Xh followed by AXh to launch the programming according to FMOD2:0. (see
Table 26.)
Flash Map Program Space
When this bit is set:
3
FPS The MOVX @DPTR, A instruction writes in the columns latches space
When this bit is cleared:
The MOVX @DPTR, A instruction writes in the regular XDATA memory space
Flash Mode
2-0
FMOD2:0 These bits allow to select the target memory area and operation on FM0
See Table 25.
Reset Value= 0000 0000b
37
7663E–8051–10/08