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參數資料
| 型號： | TE28F800C3TD70 |
| 廠商： | INTEL CORP |
| 元件分類： | PROM |
| 英文描述： | 512K X 16 FLASH 3V PROM, 70 ns, PDSO48 |
| 封裝： | 12 X 20 MM, TSOP-48 |
| 文件頁數： | 44/72頁 |
| 文件大?。?/td> | 1083K |
| 代理商： | TE28F800C3TD70 |
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Intel Advanced+ Boot Block Flash Memory (C3)
Datasheet
Intel Advanced+ Boot Block Flash Memory (C3)
May 2005
Order Number: 290645, Revision: 023
49
11.0
Security Modes
11.1
Flexible Block Locking
The Intel Advanced+ Boot Block Flash Memory (C3) device offers an instant, individual block-
locking scheme that allows any block to be locked or unlocked with no latency, enabling instant
code and data protection.
This locking scheme offers two levels of protection. The first level allows software-only control of
block locking (useful for data blocks that change frequently), while the second level requires
hardware interaction before locking can be changed (useful for code blocks that change
infrequently).
The following sections will discuss the operation of the locking system. The term “state [abc]” will
be used to specify locking states; for example, “state [001],” where a = value of WP#, b = bit D1 of
the Block Lock Status Register, and c = bit D0 of the Block Lock Status Register. Figure 14,
“Block Locking State Diagram” on page 49 displays all of the possible locking states.
Figure 14.
Block Locking State Diagram
[X00]
[X01]
Power-Up/Reset
Unlocked
Locked
[011]
[111]
[110]
Locked-
Down4,5
Software
Locked
[011]
Hardware
Locked5
Unlocked
WP# Hardware Control
Notes:
1. [a,b,c] represents [WP#, D1, D0]. X = Don’t Care.
2. D1 indicates block Lock-down status. D1 = ‘0’, Lock-down has not been issued to
this block. D1 = ‘1’, Lock-down has been issued to this block.
3. D0 indicates block lock status. D0 = ‘0’, block is unlocked. D0 = ‘1’, block is locked.
4. Locked-down = Hardware + Software locked.
5. [011] states should be tracked by system software to determine difference
between Hardware Locked and Locked-Down states.
Software Block Lock (0x60/0x01) or Software Block Unlock (0x60/0xD0)
Software Block Lock-Down (0x60/0x2F)
WP# hardware control
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相關代理商/技術參數 |
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| TE28F800CEB120 | 制造商:INTEL 制造商全稱:Intel Corporation 功能描述:8-MBIT (512K X 16, 1024K X 8) SmartVoltage BOOT BLOCK FLASH MEMORY FAMILY |
| TE28F800CET120 | 制造商:INTEL 制造商全稱:Intel Corporation 功能描述:8-MBIT (512K X 16, 1024K X 8) SmartVoltage BOOT BLOCK FLASH MEMORY FAMILY |
| TE28F800CV-B60 | 制造商:INTEL 制造商全稱:Intel Corporation 功能描述:2-MBIT SmartVoltage BOOT BLOCK FLASH MEMORY FAMILY |
| TE28F800CV-B80 | 制造商:INTEL 制造商全稱:Intel Corporation 功能描述:2-MBIT SmartVoltage BOOT BLOCK FLASH MEMORY FAMILY |
| TE28F800CVB90 | 制造商:INTEL 制造商全稱:Intel Corporation 功能描述:8-MBIT (512K X 16, 1024K X 8) SmartVoltage BOOT BLOCK FLASH MEMORY FAMILY |
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