Excellent Memory Managementment
• |
Sector
Selects
1
– Map any µPSD memory sector to any address |
Page
SRAMSRAMSRAM
Sector
– | Easily convert existing 8051 designs into µPSD |
– | Total memory mapping flexibility for new designs |
8032 | Address |
MCU |
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•Memory Paging is Easy using Decode PLD
Register
DECODE 
MAINMAINMAIN FLASHFLASHFLASH PLD 
22ndnd FLASHFLASH
2nd FLASH
Sector
Selects
8
Sectors
4
Sectors
–Break traditional 8051 64K Byte address limit imposed by only 16 address lines
–
–Paging (or banking) is directly supported by most 8051 C compilers
FFFF |
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Page 0 | Page 1 | Page 2 | Page 3 |
| Page 7 | ||
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| Page 7 | ||
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| 32K Main | 32K Main | 32K Main | 32K Main |
| 32K Main |
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| Flash |
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| 32K Main | ||
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| Flash | Flash | Flash |
| Flash | |
64K |
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| Flash | |||
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Common to All Pages
Map here: SRAM, 2nd Flash, I/O, etc
0000
www.st.com/micropsd | 6 |
