參數(shù)資料
型號(hào)： AM49BDS640AHE8I
廠商： SPANSION LLC
元件分類(lèi)： 存儲(chǔ)器
英文描述： Stacked Multichip Package (MCP), Flash Memory and pSRAM CMOS 1.8 Volt-only Simultaneous Read/Write
中文描述： SPECIALTY MEMORY CIRCUIT, PBGA89
封裝： 10 X 8 MM, FBGA-89
文件頁(yè)數(shù)： 37/84頁(yè)
文件大?。?/td> 763K
代理商： AM49BDS640AHE8I
December 5, 2003
Am49BDS640AH
35
A D V A N C E I N F O R M A T I O N
out margin, the erase command should be reissued to
improve the program margin.
It is the responsibility of the user to preprogram all
PPBs prior to issuing the All PPB Erase command. If
the user attempts to erase a cleared PPB, over-era-
sure may occur making it difficult to program the PPB
at a later time. Also note that the total number of PPB
program/erase cycles is limited to 100 cycles. Cycling
the PPBs beyond 100 cycles is not guaranteed.
DYB Write Command
The DYB Write command is used for setting the DYB,
which is a volatile bit that is cleared at hardware reset.
There is one DYB per sector. If the PPB is set, the sec-
tor is protected regardless of the value of the DYB. If
the PPB is cleared, setting the DYB to a 1 protects the
sector from programs or erases. Since this is a volatile
bit, removing power or resetting the device will clear
the DYBs.
PPB Status Command
The programming of the PPB for a given sector can be
verified by writing a PPB status verify command to the
device.
PPB Lock Bit Status Command
The programming of the PPB Lock Bit for a given sec-
tor can be verified by writing a PPB Lock Bit status ver-
ify command to the device.
DYB Status Command
The programming of the DYB for a given sector can be
verified by writing a DYB Status command to the de-
vice.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AM49BDS640AHE9I 制造商:SPANSION 制造商全稱(chēng):SPANSION 功能描述:Stacked Multichip Package (MCP), Flash Memory and pSRAM CMOS 1.8 Volt-only Simultaneous Read/Write
AM49DL3208G 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:Am49DL3208G - Stacked Multi-Chip Package (MCP) Flash Memory and pSRAM
AM49DL320BG 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:Am49DL320BG - Stacked Multi-Chip Package (MCP) Flash Memory and SRAM
AM49DL320BGB701 制造商:SPANSION 制造商全稱(chēng):SPANSION 功能描述:Stacked Multi-Chip Package (MCP) Flash Memory and SRAM 32 Megabit (4 M x 8-Bit/2 M x 16-Bit) CMOS 3.0 Volt-only, Simultaneous
AM49DL320BGB701S 制造商:AMD 制造商全稱(chēng):Advanced Micro Devices 功能描述:32 Megabit (4 M x 8-Bit/2 M x 16-Bit) CMOS 3.0 Volt-only, Simultaneous Operation Flash Memory and 32 Mbit (2M x 16-Bit) Pseudo Static RAM
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