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SH7041A bảng dữ liệu(PDF) 761 Page - Renesas Technology Corp

tên linh kiện SH7041A
Giải thích chi tiết về linh kiện  Renesas 32-Bit Single-Chip RISC Microprocessor SuperH RISC engine Family/SH7040 Series(CPU Core SH-2)
PDF  923 Pages
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nhà sản xuất  RENESAS [Renesas Technology Corp]
Trang chủ  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

SH7041A bảng dữ liệu(HTML) 761 Page - Renesas Technology Corp

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723
H'000000
H'03F000
H'03F400
H'03F800
H'03FC00
H'03FFFF
EB0 to 7
EB11
EB10
EB9
EB8
H'FFFFF800
H'FFFFFBFF
On-chip RAM
Flash memory
This area can be accessed
from both RAM and flash memory
Figure 22.17 Example of RAM Overlap Operation
Example in which Flash Memory Block Area (EB8) is Overlapped
1. Set bits RAMS, RAM1, and RAM0 in RAMER to 1, 0, 1, to overlap part of RAM onto the
area (EB8) for which real-time programming is required.
2. Real-time programming is performed using the overlapping RAM.
3. After the program data has been confirmed, the RAMS bit is cleared, releasing RAM overlap.
4. The data written in the overlapping RAM is written into the flash memory space (EB8).
Notes: 1. When the RAMS bit is set to 1, program/erase protection is enabled for all blocks
regardless of the value of RAM1 and RAM0 (emulation protection). In this state,
setting the P1 or E1 bit in flash memory control register 1 (FLMCR1), or the P2 or E2
bit in flash memory control register 2 (FLMCR2), will not cause a transition to
program mode or erase mode. When actually programming or erasing a flash memory
area, the RAMS bit should be cleared to 0.
2. A RAM area cannot be erased by execution of software in accordance with the erase
algorithm while flash memory emulation in RAM is being used.



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