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M29DW128F bảng dữ liệu(PDF) 22 Page - STMicroelectronics

tên linh kiện M29DW128F
Giải thích chi tiết về linh kiện  128 Mbit (16Mb x8 or 8Mb x16, Multiple Bank, Page, Boot Block) 3V Supply, Flash Memory
PDF  93 Pages
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
Trang chủ  http://www.st.com
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M29DW128F bảng dữ liệu(HTML) 22 Page - STMicroelectronics

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4 Hardware Protection
M29DW128F
22/93
4
Hardware Protection
The M29DW128F features hardware protection/unprotection. Refer to Table 9 for details on
hardware block protection/unprotection using VPP/WP and RP pins.
4.1
Write Protect
The VPP/WP pin protects the four outermost parameter blocks (refer to Section 2: Signal
descriptions for a detailed description of the signals).
4.2
Temporary Block Unprotect
When held at VID, the Reset/Block Temporary Unprotect pin, RP, will temporarily unprotect all
the blocks previously protected using a High Voltage Block Protection technique.
Table 9.
Hardware Protection
VPP/WP
RP
Function
VIL
VIH
4 outermost parameter blocks protected from
Program/Erase operations
VID
All blocks temporarily unprotected except the 4
outermost blocks(1)
1.
The temporary unprotection is valid only for the blocks that have been protected using the High Voltage
Protection Technique (see Appendix D: High Voltage Block Protection). The blocks protected using a software
protection method (Standard, Password) do not follow this rules.
VIH or VID
VID
All blocks temporarily unprotected(1)
VPPH
VIH or VID
All blocks temporarily unprotected(1)



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