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SH7052 bảng dữ liệu(PDF) 815 Page - Renesas Technology Corp

tên linh kiện SH7052
Giải thích chi tiết về linh kiện  SuperHTM RISC engine
PDF  919 Pages
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nhà sản xuất  RENESAS [Renesas Technology Corp]
Trang chủ  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

SH7052 bảng dữ liệu(HTML) 815 Page - Renesas Technology Corp

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22.2
Operation
The on-chip RAM is controlled by means of the system control register (SYSCR).
When the RAME bit in SYSCR is set to 1, the on-chip RAM is enabled. Accesses to addresses
H'FFFF8000 to H'FFFFAFFF is SH7052F, or accesses to address H'FFFF8000 to H'FFFFBFFF in
SH7053F and SH7054F are then directed to the on-chip RAM.
When the RAME bit in SYSCR is cleared to 0, the on-chip RAM is not accessed. A read will
return an undefined value, and a write is invalid. If a transition is made to hardware standby mode
after the RAME bit in SYSCR is cleared to 0, the contents of the on-chip RAM are held.
For details of SYSCR, see 23.2.2, System Control Register (SYSCR), in section 23, Power-Down
State.



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