參數(shù)資料
型號： JS28F640P30T85
廠商： INTEL CORP
元件分類： DRAM
英文描述： Intel StrataFlash Embedded Memory
中文描述： 4M X 16 FLASH 1.8V PROM, 85 ns, PDSO56
封裝： 14 X 20 MM, LEAD FREE, TSOP-56
文件頁數(shù)： 72/102頁
文件大?。?/td> 1609K
代理商： JS28F640P30T85
1-Gbit P30 Family
April 2005
72
Intel StrataFlash
Embedded Memory (P30)
Order Number: 306666, Revision: 001
Datasheet
13.3
Protection Registers
The device contains 17 Protection Registers (PRs) that can be used to implement system security
measures and/or device identification. Each Protection Register can be individually locked.
The first 128-bit Protection Register is comprised of two 64-bit (8-word) segments. The lower 64-
bit segment is pre-programmed at the Intel factory with a unique 64-bit number. The other 64-bit
segment, as well as the other sixteen 128-bit Protection Registers, are blank. Users can program
these registers as needed. When programmed, users can then lock the Protection Register(s) to
prevent additional bit programming (see
Figure 33, “Protection Register Map” on page 73
).
The user-programmable Protection Registers contain one-time programmable (OTP) bits; when
programmed, register bits cannot be erased. Each Protection Register can be accessed multiple
times to program individual bits, as long as the register remains unlocked.
Each Protection Register has an associated Lock Register bit. When a Lock Register bit is
programmed, the associated Protection Register can only be read; it can no longer be programmed.
Additionally, because the Lock Register bits themselves are OTP, when programmed, Lock
Register bits cannot be erased. Therefore, when a Protection Register is locked, it cannot be
unlocked.
相關(guān)PDF資料
PDF描述
JS28F128P30B85 Intel StrataFlash Embedded Memory
JS4PS-1W Power Splitter/Combiner
JSPHS-1000 180?Voltage Variable, 700 to 1000 MHz
JSPHS-12 Phase Shifter
JSPHS-150 Narrow Band Phase Shifter 50ohm 180 Voltage Variable 100 to 150 MHz
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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JS28F640P30TF75A 制造商:Micron Technology Inc 功能描述:PARALLEL NOR - Trays 制造商:Micron Technology Inc 功能描述:MICJS28F640P30TF75A 64MB NOR FLASH MEMOR 制造商:Micron Technology Inc 功能描述:NOR Flash Parallel/Serial 1.8V 64Mbit 4M x 16bit 75ns 56-Pin TSOP Tray 制造商:Micron Technology Inc 功能描述:IC FLASH 64MBIT 75NS 56TSOP
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JS28F640P33BF70A 制造商:Micron Technology Inc 功能描述:NOR Flash Parallel/Serial 2.5V/3.3V 64Mbit 4M x 16bit 70ns 56-Pin TSOP Tray 制造商:Micron Technology Inc 功能描述:PARALLEL NOR - Trays 制造商:Micron Technology Inc 功能描述:FLASH PARALLEL 64MBIT 56TSO 制造商:Micron Technology Inc 功能描述:FLASH, PARALLEL, 64MBIT, 56TSOP 制造商:Micron Technology Inc 功能描述:FLASH, PARALLEL, 64MBIT, 56TSOP; Memory Type:Flash - NOR; Memory Size:64Mbit; Memory Configuration:4M x 16bit; Supply Voltage Min:2.3V; Supply Voltage Max:3.6V; Memory Case Style:TSOP; No. of Pins:56; Clock Frequency:40MHz; Access ;RoHS Compliant: Yes
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