AN1177 STMicroelectronics, AN1177 Datasheet - Page 19

• Manufacturer Part Number: AN1177
• Description: P51XA-PSD8XX DESIGN GUIDE
• Manufacturer: STMicroelectronics

Figure 6. Memory Map, Enhanced Design at Boot-Up/ISP
Memory Map Configuration After Moving the Main Flash. The next step is to move the main Flash
memory from Data Space to Program Space. To do so, while executing out of the boot Flash memory,
write 06h to the VM register. You will now have the memory map shown in Figure 7.
Not to
Scale
Here
Boot
from
F:FFFF
0:8000
0:6000
0:4000
0:2000
0:0000
2:FFFF
Optional Boot Flash/EEPROM (csboot3/ees3--8 Kbytes)
Optional Boot Flash/EEPROM (csboot2/ees2--8 Kbytes)
Optional Boot Flash/EEPROM (csboot1/ees1--8 Kbytes)
Optional Boot Flash/EEPROM (csboot0/ees0--8 Kbytes)
Program Space
13 x 64 KBytes
Unmapped
Unmapped
160 KBytes
VM Register = 12h
Not to
Not to
swap = 0
Scale
Scale
2:C000
1:C000
F:FFFF
2:FFFF
2:8000
2:4000
2:0000
1:8000
1:4000
1:0000
0:1900
0:1000
0:1800
0:0000
PSD Control Register (CSIOP)
AN1177 - APPLICATION NOTE
Main Flash Memory FS6
Main Flash Memory FS5
Main Flash Memory FS3
Main Flash Memory FS1
Main Flash Memory FS7
Main Flash Memory FS4
Main Flash Memory FS2
Main Flash Memory FS0
80C51XA On-Chip RAM
Optional SRAM (RS0)
256 Bytes to 1 KByte
16 KBytes FLASH
16 KBytes FLASH
16 KBytes FLASH
16 KBytes FLASH
16 KBytes FLASH
16 KBytes FLASH
16 KBytes FLASH
16 KBytes FLASH
3 to 3.75 KBytes
13 x 64 KBytes
Data Space
Unmapped
Unmapped
Unmapped
57.75 KBytes
256 Bytes
2 KBytes
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