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AT91SAM7S128-AI датащи(PDF) 13 Page - ATMEL Corporation

номер детали AT91SAM7S128-AI
подробное описание детали  AT91 ARM Thumb-based Microcontrollers
PDF  32 Pages
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производитель  ATMEL [ATMEL Corporation]
домашняя страница  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT91SAM7S128-AI датащи(HTML) 13 Page - ATMEL Corporation

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AT91SAM7S128 Summary Preliminary
6116AS–ATARM–20-Oct-04
Memory
•
128 Kbytes of Flash Memory
–
512 pages of 256 bytes
–
Fast access time, 30 MHz single-cycle access in worst case conditions
–
Page programming time: 4 ms, including page auto-erase
–
Page programming without auto-erase: 2 ms
–
Full chip erase time: 10 ms
–
10,000 write cycles, 10-year data retention capability
–
8 lock bits, each protecting 8 sectors of 64 pages
–
Protection Mode to secure contents of the Flash
•
32 Kbytes of Fast SRAM
–
Single-cycle access at full speed
Memory Mapping
Internal SRAM
The AT91SAM7S128 embeds a high-speed 32-Kbyte SRAM bank. After reset and until
the Remap Command is performed, the SRAM is only accessible at address 0x0020
0000. After Remap, the SRAM also becomes available at address 0x0.
Internal Flash
The AT91SAM7S128 features one bank of 128 Kbytes of Flash. At any time, the Flash
is mapped to address 0x0010 0000. It is also accessible at address 0x0 after the reset
and before the Remap Command.
Figure 4. Internal Memory Mapping
256M Bytes
Flash Before Remap
SRAM After Remap
Undefined Areas
(Abort)
0x000F FFFF
0x001F FFFF
0x002F FFFF
0x0FFF FFFF
1 M Bytes
1 M Bytes
1 M Bytes
253 M Bytes
Internal Flash
Internal SRAM
0x0000 0000
0x0010 0000
0x0020 0000
0x0030 0000



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