參數(shù)資料
型號(hào)： M30L0T8000B0ZAQE
廠商： STMICROELECTRONICS
元件分類： PROM
英文描述： 16M X 16 FLASH 1.8V PROM, 85 ns, PBGA88
封裝： 8 X 10 MM, 0.80 MM PITCH, LEAD FREE, BGA-88
文件頁(yè)數(shù)： 47/103頁(yè)
文件大小： 794K
代理商： M30L0T8000B0ZAQE
Block locking
M30L0T8000T0, M30L0T8000B0
9
Block locking
The M30L0T8000T0/B0 features an instant, individual block locking scheme that allows any
block to be locked or unlocked with no latency. This locking scheme has three levels of
protection.
●
Lock/Unlock - this first level allows software only control of block locking.
●
Lock-Down - this second level requires hardware interaction before locking can be
changed.
●
VPP ≤VPPLK - the third level offers a complete hardware protection against program and
erase on all blocks.
The protection status of each block can be set to Locked, Unlocked, and Locked-Down.
Table 16, defines all of the possible protection states (WP, DQ1, DQ0), and Appendix C,
Figure 23, shows a flowchart for the locking operations.
9.1
Reading a Block’s Lock Status
The lock status of every block can be read in the Read Electronic Signature mode of the
device. To enter this mode issue the Read Electronic Signature command. Subsequent
reads at the address specified in Table 7, will output the protection status of that block.
The lock status is represented by DQ0 and DQ1. DQ0 indicates the Block Lock/Unlock
status and is set by the Lock command and cleared by the Unlock command. DQ0 is
automatically set when entering Lock-Down. DQ1 indicates the Lock-Down status and is set
by the Lock-Down command. DQ1 cannot be cleared by software, only by a hardware reset
or power-down.
The following sections explain the operation of the locking system.
9.2
Locked State
The default status of all blocks on power-up or after a hardware reset is Locked (states
(0,0,1) or (1,0,1)). Locked blocks are fully protected from program or erase operations. Any
program or erase operations attempted on a locked block will return an error in the Status
Register. The Status of a Locked block can be changed to Unlocked or Locked-Down using
the appropriate software commands. An Unlocked block can be Locked by issuing the Lock
command.
9.3
Unlocked State
Unlocked blocks (states (0,0,0), (1,0,0) (1,1,0)), can be programmed or erased. All unlocked
blocks return to the Locked state after a hardware reset or when the device is powered-
down. The status of an unlocked block can be changed to Locked or Locked-Down using the
appropriate software commands. A locked block can be unlocked by issuing the Unlock
command.
相關(guān)PDF資料
PDF描述
M31002AMLJ1000.000000MHZ VCXO, CLOCK, 1000 MHz, LVDS OUTPUT
M31016AUMJ1000.000000MHZ VCXO, CLOCK, 1000 MHz, CMOS OUTPUT
M31002AGMJ1000.000000MHZ VCXO, CLOCK, 1000 MHz, CMOS OUTPUT
M31002BMMJ1000.000000MHZ VCXO, CLOCK, 1000 MHz, CMOS OUTPUT
M31026AGLN1000.000000MHZ VCXO, CLOCK, 1000 MHz, LVDS OUTPUT
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
M30L40C 制造商:VISHAY 制造商全稱:Vishay Siliconix 功能描述:Dual Common-Cathode Schottky Rectifier
M30L40C-E3/4W 功能描述:肖特基二極管與整流器 40 Volt 30 Amp Dual Common-Cathode RoHS:否 制造商:Skyworks Solutions, Inc. 產(chǎn)品:Schottky Diodes 峰值反向電壓:2 V 正向連續(xù)電流:50 mA 最大浪涌電流: 配置:Crossover Quad 恢復(fù)時(shí)間: 正向電壓下降:370 mV 最大反向漏泄電流: 最大功率耗散:75 mW 工作溫度范圍:- 65 C to + 150 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOT-143 封裝:Reel
M30L45C-E3/4W 功能描述:肖特基二極管與整流器 45 Volt 30 Amp Dual Common-Cathode RoHS:否 制造商:Skyworks Solutions, Inc. 產(chǎn)品:Schottky Diodes 峰值反向電壓:2 V 正向連續(xù)電流:50 mA 最大浪涌電流: 配置:Crossover Quad 恢復(fù)時(shí)間: 正向電壓下降:370 mV 最大反向漏泄電流: 最大功率耗散:75 mW 工作溫度范圍:- 65 C to + 150 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOT-143 封裝:Reel
M30LLASSM 制造商:Apex Tool Group 功能描述:Syringe; Manual Assemble Calibrated Syringe; 30 cc 制造商:Cooper Hand Tools / Weller 功能描述:CALIBRATED SYRINGE, 30CC; Dispenser Type:Syringe; Volume:30cc; Accessory Type:Calibrated Syringe
M30LLBA 制造商:Apex Tool Group 功能描述:30CC MANUAL ASSEMBLED CALIBRATED SYRINGE WITH LUER LOK™ TIP
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*