參數(shù)資料
型號(hào)： μPD29F008AL-X
廠商： NEC Corp.
英文描述： 8 M-Bit CMOS Low Voltage Flash Memory(8M CMOS低壓閃存)
中文描述： 8 m位的CMOS低電壓快閃記憶體（800萬(wàn)的CMOS低壓閃存）
文件頁(yè)數(shù)： 25/44頁(yè)
文件大?。?/td> 249K
代理商： ΜPD29F008AL-X
Preliminary Data Sheet
25
μ
PD29F008AL-X
5.3 I/O2 (Toggle Bit II)
Toggle bit II is a function that determines whether automatic erase (or erase suspend) is in progress for a particular
sector by using I/O2.
I/O2 is toggled when continuous read is performed from addresses in a sector during automatic erase (or erase
suspend). Either /OE or /CE is used to control continuous read.
When write to a sector that is not subject to erase suspend is attempted during erase suspend, read from sectors
that are not subject to erase suspend cannot be performed until program is completed. In this case, if continuous
read is performed from addresses in sectors that are not subject to erase suspend, "1" is not output to I/O2.
In this way, it is possible to determine whether automatic erase (including erase suspend) is in progress for sectors
specified using I/O2, but whether the state is erase in progress or erase suspend cannot be determined with I/O2. To
determine this, I/O6 (toggle bit) must be used. See section
5.2 I/O6 (Toggle Bit)
.
5.4 I/O5 (Exceeding Timing Limits)
If the program / erase time exceeds the prescribed number of pulses during automatic program / erase (exceeding
timing limit), "1" is output to I/O5 and automatic program / erase failure is indicated.
Moreover, if overwriting "0" to "1" is attempted, the device judges data overwrite to be impossible, and "1" is output
to I/O5 when the timing limit is exceeded.
When this happens, execute command reset.
5.5 I/O3 (Sector Erase Timer)
A 50
μ
s timeout period occurs following write with the sector erase command sequence before automatic erase
starts.
During this timeout period, "0" is output to I/O3. When automatic erase starts upon completion of the timeout
period, "1" is output to I/O3.
If sector erase is performed, first confirm whether the device has received a command by using I/O7 (data polling)
or I/O6 (toggle bit). Then, using I/O3, check whether automatic erase has started. If I/O3 is "0", the timeout period is
not over, and so it is possible to add sectors to erase. If I/O3 is "1", automatic erase starts and other commands
(except erase suspend) are ignored until erase is completed.
If a sector to erase is added during the sector erase timeout period, it is recommended to check I/O3 prior to and
following the addition. If I/O3 is "1" following the addition, that addition may not be accepted.
相關(guān)PDF資料
PDF描述
μPD29F008L 8 M-Bit CMOS 3.0 V-Only Flash Memory(8M CMOS 3V工作電壓的閃存)
μPD30100 64-bit RISC Microprosessor(64位 RISC 微處理器)
μPD30101 64-Bit Microprocessor(64位微處理器)
μPD30102 64-/32-BIT Microprocessor(64/32位微處理器)
μPD30121 64-Bit MIPS RISC Microprocessor(64 位RISC 微處理器)
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PD2M 制造商:ANADIGICS 制造商全稱(chēng):ANADIGICS, Inc 功能描述:2mm InGaAs Photodiode
PD2M-0XX 制造商:ANADIGICS 制造商全稱(chēng):ANADIGICS, Inc 功能描述:2mm InGaAs Photodiode
PD2M-1XX 制造商:ANADIGICS 制造商全稱(chēng):ANADIGICS, Inc 功能描述:2mm InGaAs Photodiode
PD2-O4118L1804 制造商:NANOTEC 功能描述:MOTOR PLUG & DRIVE 42MM 0.5NM 制造商:NANOTEC 功能描述:MOTOR, PLUG & DRIVE, 42MM, 0.5NM
PD2-O4118S1404 制造商:NANOTEC 功能描述:MOTOR PLUG & DRIVE 42MM 0.3NM 制造商:NANOTEC 功能描述:MOTOR, PLUG & DRIVE, 42MM, 0.3NM 制造商:NANOTEC 功能描述:MOTOR, PLUG & DRIVE, 42MM, 0.3NM; Torque Max:0.2N-m; Current Rating:1.4A; No. of Phases:Two; SVHC:No SVHC (19-Dec-2012); External Height:42.3mm; Supply Voltage Max:24V; Supply Voltage Min:12V ;RoHS Compliant: Yes
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(xiě)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

*
*
*