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SH7052 bảng dữ liệu(PDF) 811 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) 811 Page - Renesas Technology Corp

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background image
785
tosc1
tbmv
tdwn
VCC
RES
FWE
Memory read
mode
Command
wait state
Auto-program mode
Auto-erase mode
Command wait state
Normal/abnormal
end decision
Note: In modes other than auto-program mode and auto-erase mode, the FWE input pin should be
driven low.
Figure 21.28 Oscillation Stabilization Time, Boot Program Transfer Time, and
Power-Down Sequence
21.11.9
Notes on Memory Programming
1. When programming addresses which have previously been programmed, carry out auto-
erasing before auto-programming.
2. When performing programming using programmer mode on a chip that has been
programmed/erased in an on-board programming mode, auto-erasing is recommended before
carrying out auto-programming.
Notes: 1. The flash memory is initially in the erased state when the device is shipped by Hitachi.
For other chips for which the erasure history is unknown, it is recommended that auto-
erasing be executed to check and supplement the initialization (erase) level.
2. Auto-programming should be performed once only on the same address block.
Additional programming cannot be performed on previously programmed address
blocks.



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