SLC传家宝U盘

digital2001

找到一块N年前的USB2.0的U盘，居然还是SLC的。
90nm SLC，10万次擦除寿命，应该属于牢不可破，坚固无比的了。

Reliable CMOS Floating-Gate Technology - Endurance : 100K Program/Erase Cycles - Data Retention : 10 Years

可惜是USB2.0，老掉牙的主控。




　主控厂商: SMI(慧荣)
　主控型号: SM323AD - ISP 2005-08-19
闪存识别码: ECDCC115 - Samsung(三星) K9K4G08U0M - 1CE/双通道 [SLC-2K] -> 总容量 = 1GB

可能的闪存型号
------------------
[1CE]K9K4G08U0M(90nm) x 1片/通道 x 2通道

FEATURES · Voltage Supply -1.8V device(K9K4GXXQ0M): 1.70V~1.95V -3.3V device(K9XXGXXUXM): 2.7 V ~3.6 V · Organization - Memory Cell Array -X8 device(K9XXG08XXM) : (512M + 16,384K)bit x 8bit -X16 device(K9XXG16XXM) : (256M + 8,192K)bit x 16bit - Data Register -X8 device(K9XXG08XXM): (2K + 64)bit x8bit -X16 device(K9XXG16XXM): (1K + 32)bit x16bit - Cache Register -X8 device(K9XXG08XXM) : (2K + 64)bit x8bit -X16 device(K9XXG16XXM) : (1K + 32)bit x16bit · Automatic Program and Erase - Page Program -X8 device(K9XXG08XXM) : (2K + 64)Byte -X16 device(K9XXG16XXM) : (1K + 32)Word - Block Erase -X8 device(K9XXG08XXM) : (128K + 4K)Byte -X16 device(K9XXG16XXM) : (64K + 2K)Word · Page Read Operation - Page Size - X8 device(K9XXG08XXM) : 2K-Byte - X16 device(K9XXG16XXM) : 1K-Word - Random Read : 25ms(Max.) - Serial Access : 50ns(Min.) 30ns(Min., K9XXG08UXM only) · Fast Write Cycle Time - Program time : 300ms(Typ.) - Block Erase Time : 2ms(Typ.) · Command/Address/Data Multiplexed I/O Port · Hardware Data Protection - Program/Erase Lockout During Power Transitions · Reliable CMOS Floating-Gate Technology - Endurance : 100K Program/Erase Cycles - Data Retention : 10 Years · Command Register Operation · Cache Program Operation for High Performance Program · Power-On Auto-Read Operation · Intelligent Copy-Back Operation · Unique ID for Copyright Protection · Package : - K9XXGXXXXM-YCB0/YIB0 48 - Pin TSOP I (12 x 20 / 0.5 mm pitch) - K9W8G08U1M-YCB0/YIB0 : Two K9K4G08U0M stacked. 48 - Pin TSOP I (12 x 20 / 0.5 mm pitch) - K9XXGXXXXM-PCB0/PIB0 48 - Pin TSOP I (12 x 20 / 0.5 mm pitch) - K9W8G08U1M-PCB0/PIB0 : Two K9K4G08U0M stacked. 48 - Pin TSOP I (12 x 20 / 0.5 mm pitch) Offered in 512Mx8bit or 256Mx16bit, the K9XXGXXXXM is 4G bit with spare 128M bit capacity. Its NAND cell provides the most cost-effective solution for the solid state mass storage market. A program operation can be performed in typical 300ms on the 2112- byte(X8 device) or 1056-word(X16 device) page and an erase operation can be performed in typical 2ms on a 128K-byte(X8 device) or 64K-word(X16 device) block. Data in the data page can be read out at 50ns cycle time per byte(30ns, only X8 3.3v device) or word(X16 device). The I/O pins serve as the ports for address and data input/output as well as command input. The on-chip write controller automates all program and erase functions including pulse repetition, where required, and internal verification and margin ng of data. Even the write-intensive systems can take advantage of the K9XXGXXXXM¢s extended reliability of 100K program/erase cycles by providing ECC(Error Correcting Code) with real time mapping-out algorithm. The K9XXGXXXXM is an optimum solution for arge nonvolatile storage applications such as solid state file storage and other portable applications requiring non-volatility. An ultra high density solution having two 4Gb stacked with two chip selects is also available in standard TSOPI package.

512M x 8 Bit / 256M x 16 Bit NAND Flash Memory

digital2001

nesw 发表于 2024-6-25 10:09
我有一个16g的slc，应该可以做传家宝了，好像是15年买的，3.0的，几百兆的都丢完了，就剩下这个贵的了 ...

16G 3.0还是挺实用的。

digital2001

hzw6834 发表于 2024-6-25 10:44
SSD有几个SLC的，当时不便宜，一个128G的，一个256G的，大的当时好像一千多吧。现在看只能用作系统盘了。 ...

如果SLC容量不太大的话，当虚拟内存、系统缓存（Temp目录）还是挺好用的。这样系统盘可以用上更大容量的TLC，写盘的压力则主要在SLC上。

digital2001

hzjd327 发表于 2024-7-1 14:03
手上有1个IBM小机控制台送的群联8G盘，2颗top48 东芝SLC 4G组成的，用了7-8年了，质量刚刚的。 ...

群联主控的量产有点难搞