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參數(shù)資料
| 型號(hào)： | SST49LF008C-33-4C-NHE |
| 元件分類： | PROM |
| 英文描述： | 1M X 8 FLASH 3V PROM, 11 ns, PQCC32 |
| 封裝： | ROHS COMPLIANT, PLASTIC, MS-016AE, LCC-32 |
| 文件頁數(shù)： | 16/36頁 |
| 文件大?。?/td> | 509K |
| 代理商： | SST49LF008C-33-4C-NHE |
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Advance Information
4 Mbit / 8 Mbit LPC Serial Flash
SST49LF004C / SST49LF008C
23
200 Silicon Storage Technology, Inc.
S71292-00-000
1/06
Write-Lock Bit
The Write-Lock bit, bit 0, controls the lock state described
in Table 16. The default Write status of all blocks after
power up is write locked. When bit 0 of the Block Locking
register is set, Program and Erase operations for the corre-
sponding block are prevented. Clearing the Write-Lock bit
will unprotect the block. The Write-Lock bit must be cleared
prior to starting a Program or Erase operation since it is
sampled at the beginning of the operation. The Write-Lock
bit functions in conjunction with the hardware Write Lock
pin TBL# for the top Boot Block. When TBL# is low, it over-
rides the software locking scheme. The top Boot Block
Locking register does not indicate the state of the TBL#
pin. The Write-Lock bit functions in conjunction with the
hardware WP#/AAI pin for the remaining blocks (Blocks 0
to 17 for 49LF008C and Blocks 0 to 9 for 49LF004C).
When WP#/AAI is low, it overrides the software locking
scheme. The Block Locking register does not indicate the
state of the WP#/AAI pin.
Lock-Down Bit
The Lock-Down bit, bit 1, controls the Block Locking regis-
ter as described in Table 16. When in LPC interface mode,
the default Lock Down status of all blocks upon power-up is
not locked down. Once the Lock-Down bit is set, any future
attempted changes to that Block Locking register will be
ignored. The Lock-Down bit is only cleared upon a device
reset with RST# or INIT# or power down. Current Lock
Down status of a particular block can be determined by
reading the corresponding Lock-Down bit. Once a block’s
Lock-Down bit is set, the Read-Lock and Write-Lock bits for
that block can no longer be modified: the block is locked
down in its current state of read/write accessibility.
Read-Lock Bit
The default read status of all blocks upon power-up is read-
unlocked. When a block’s read lock bit is set, data cannot
be read from that block. An attempted read from a read-
locked block will result in the data 00h. The read lock status
can be unlocked by clearing the read lock bit: this can only
be done provided that the block is not locked down. The
current read lock status of a particular block can be deter-
mined by reading the corresponding read-lock bit.
TABLE 16: BLOCK/PDA SECTOR LOCKING REGISTER BITS
Reserved Bit
[7:3]
Read-Lock Bit
[2]
Lock-Down Bit
[1]
Write-Lock Bit
[0]
Lock Status
00000
0
Full Access
00000
0
1
Write Locked (Default State at Power-Up)
00000
0
1
0
Locked Open (Full Access Locked Down)
00000
0
1
Write Locked Down
00000
1
0
Block Read Locked (Registers alterable)
00000
1
0
1
Block Read & Write Lock (Registers alterable)
00000
1
0
Block Read Locked Down (Registers not alterable)
00000
1
Block Read & Write lock Down (Registers not alterable)
T16.0 1292
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SST49LF008C-33-4C-WHE | 制造商:SST 制造商全稱:Silicon Storage Technology, Inc 功能描述:4 Mbit / 8 Mbit LPC Serial Flash |
| SST49LF016C | 制造商:SST 制造商全稱:Silicon Storage Technology, Inc 功能描述:16 Mbit LPC Serial Flash |
| SST49LF016C-33-4C-EIE | 功能描述:閃存 16M (2Mx8) 33MHz 3.0-3.6V Commercial RoHS:否 制造商:ON Semiconductor 數(shù)據(jù)總線寬度:1 bit 存儲(chǔ)類型:Flash 存儲(chǔ)容量:2 MB 結(jié)構(gòu):256 K x 8 定時(shí)類型: 接口類型:SPI 訪問時(shí)間: 電源電壓-最大:3.6 V 電源電壓-最小:2.3 V 最大工作電流:15 mA 工作溫度:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體: 封裝:Reel |
| SST49LF016C-33-4C-EIE-T | 功能描述:閃存 3.0 to 3.6V 16Mbit LPC Firmware 閃存 RoHS:否 制造商:ON Semiconductor 數(shù)據(jù)總線寬度:1 bit 存儲(chǔ)類型:Flash 存儲(chǔ)容量:2 MB 結(jié)構(gòu):256 K x 8 定時(shí)類型: 接口類型:SPI 訪問時(shí)間: 電源電壓-最大:3.6 V 電源電壓-最小:2.3 V 最大工作電流:15 mA 工作溫度:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體: 封裝:Reel |
| SST49LF016C-33-4C-NHE | 功能描述:閃存 16M (2Mx8) 33MHz 3.0-3.6V Commercial RoHS:否 制造商:ON Semiconductor 數(shù)據(jù)總線寬度:1 bit 存儲(chǔ)類型:Flash 存儲(chǔ)容量:2 MB 結(jié)構(gòu):256 K x 8 定時(shí)類型: 接口類型:SPI 訪問時(shí)間: 電源電壓-最大:3.6 V 電源電壓-最小:2.3 V 最大工作電流:15 mA 工作溫度:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體: 封裝:Reel |
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