- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄373153 > KM29W040AT (SAMSUNG SEMICONDUCTOR CO. LTD.) 512K x 8 bit NAND Flash Memory PDF資料下載
參數(shù)資料
| 型號(hào)： | KM29W040AT |
| 廠商： | SAMSUNG SEMICONDUCTOR CO. LTD. |
| 英文描述： | 512K x 8 bit NAND Flash Memory |
| 中文描述： | 為512k × 8位NAND快閃記憶體 |
| 文件頁數(shù)： | 9/22頁 |
| 文件大?。?/td> | 359K |
| 代理商： | KM29W040AT |
KM29W040AT, KM29W040AIT
FLASH MEMORY
9
Identifying Invalid Block(s)
All device locations are erased(FFh) except locations where the invalid block information is written prior to shipping.
Since the
invalid block information is also erasable in most cases, it is impossible to recover the information once it has been
erased. Therefore, the system must be able to recognize the invalid block(s) based on the original invalid block
information and create the invalid block table via the following suggested flow chart(Figure 1). Any intentional era-
sure of the original invalid block information is prohibited.
Invalid Block(s)
Invalid blocks are defined as blocks that contain one or more invalid bits whose reliability is not guaranteed by Samsung. Typically,
an invalid block will contain a single bad bit. The information regarding the invalid block(s) is so called as the invalid block informa-
tion.
The invalid block information is written to the 1st or the 2nd page of the invalid block(s) with 00h data
. Devices with invalid
block(s) have the same quality level or as devices with all valid blocks and have the same AC and DC characteristics. An invalid
block(s) does not affect the performance of valid block(s) because it is isolated from the bit line and the common source line by a
select transistor. The system design must be able to mask out the invalid block(s) via address mapping. The 1st block of the NAND
Flash, however, is fully guaranteed to be a valid block.
NAND Flash Technical Notes
*
Check "FFH" on the 1st and 2nd page
Figure 1. Flow chart to create invalid block table.
Start
Set Block Address = 0
Check "FFH"
Increment Block Address
Last Block
End
No
Yes
Yes
Create (or update)
Invalid Block(s) Table
No
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| KM4101IC8 | PTSE 16C 16#16 PIN PLUG |
| KM4101IC8TR3 | PTSE 61C 61#20 PIN PLUG |
| KM4100IC8 | Low Cost, +2.7V and +5V, 260MHz Rail-to-Rail Amplifiers |
| KM4100IC8TR3 | CAP,FXD,CER,U 00000.10,0100.0V,20.0%,1206 |
| KM4100 | Low Cost, +2.7V and +5V, 260MHz Rail-to-Rail Amplifiers |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| KM2M COMBO-L | 制造商:Micro-Star International 功能描述:KM266 UATX AMD 266FSB DDR - Bulk |
| KM2M806XT | 制造商:Kontron 功能描述:M2M DEPLOYMENT UNIT FOR APPLICATIONS IN HARSH ENVIRONMENTS - Boxed Product (Development Kits) |
| KM2M810-01 | 制造商:Kontron 功能描述:FRI 2.0 DEVELOPMENT KIT WITHOUT THE ERICSSON MODEM - Boxed Product (Development Kits) |
| KM2M810-02 | 制造商:Kontron 功能描述:FRI 2.0 DEVELOPMENT KIT WITH ERICSSON MODEM - Boxed Product (Development Kits) |
| KM2M810-08 | 制造商:Kontron 功能描述:FRI 2.0 DEV KIT WITH ERICSSON MODEM, PTCRB CERTIFIED - Boxed Product (Development Kits) |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。