欧美成人免费电影,国产欧美一区二区三区精品酒店,精品国产a毛片,色网在线免费观看

參數資料
型號： MC1GU032NACA
廠商： SAMSUNG SEMICONDUCTOR CO. LTD.
英文描述： MultiMediaCard Specification
中文描述： 多媒體卡規格
文件頁數： 9/66頁
文件大小： 1422K
代理商： MC1GU032NACA
MultiMediaCard
TM
9
2.6.5 Memory Array Partitioning
Although the MultiMediaCard memory space is byte addressable with addresses ranging from 0 to the
last byte, it is not a simple byte array but divided into several structures. Memory bytes are grouped
into 512 byte blocks called sectors. Every block can be read, written individually.
Erase group is a number of sectors. Its size is the number of consecutive sectors. Any combination of
erase groups can be erased in a single erase command. A write command implicitly erases the
memory before writing new data into it. Explicit erase command can be used for pre-erasing of memory
to speed up the next write operation.
Write Protect Groups (WPG) is the minimal units that may have individual write protection. Its size is
the number of erase units that will be write protected by on bit. The write/erase access to each WPG
can be limited individually. The number of various memory structures, for the different MultiMediaCards
are summarized in Table 2-1
Table 2-1 Memory Array Structure
Bytes
32MB
64MB
128MB
Sectors
62,720
125,440
250,880
Erase
Group
WPG
490
980
245
Read and Write Operations
The MultiMediaCard supports two read/write modes.
Single Block Mode
In this mode the host reads or writes one data block in a pre-specified length block transmission is
protected with 16 bit CRC which is generated by the sending unit and checked by the receiving unit.
Misalignment is not allowed. Every data block must be contained in a single memory sector. The block
length for write operations must be identical to the sector size and the start address aligned to a sector
boundary.
Multiple Block Mode
This mode is similar to the single block mode, but the host can read/write multiple data blocks (all have
the same length) which will be stored or retrieved from contiguous memory addresses starting at the
address specified in the command.
The operation is terminated with a stop transmission command. Misalignment and block length
restrictions apply to multiple blocks as well and are identical to the single block read/write operations.
Multiple block read with pre-defined block is supported.
2.6.6 Data Transfer Rate
The average data transfer rate for the MultiMediaCard is 1 Mbyte/sec for read and 300 Kbyte/Sec for
write (erase time is included) at 3.3 Volts. In block mode, where time gaps can be inserted between
data blocks, the maximum clock frequency is 20MHz. The typical access time (latency) for each data
block, in read operation, is 1.5ms. The write block operation is done in handshake mode. The card will
keep data line DAT low as long as the write operation is in progress and there are no write buffers
available
256MB
501,760
1,960
512MB
1,003,520
3,920
1GB
2,007,040
7,840
1,960
3,920
980
490
980
1,960
相關PDF資料
PDF描述
MC1GH128DACA-2SA00 SAMSUNG MultiMediaCard
MC1GH128NACA-2SA00 SAMSUNG MultiMediaCard
MC1GH256DACA-2SA00 SAMSUNG MultiMediaCard
MC2GH01GDMCA-2SA00 SAMSUNG MultiMediaCard
MC2GH256NMCA-2SA00 SAMSUNG MultiMediaCard
相關代理商/技術參數
參數描述
MC1GU032NACA-0QC00 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:MultiMediaCard Specification
MC1GU032NACB-0QC00 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:MultiMediaCard Specification
MC1GU032NACC-0QC00 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:MultiMediaCard Specification
MC1GU032NAFA-0QC00 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:MultiMediaCard Specification
MC1GU032NAFB-0QC00 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:MultiMediaCard Specification
發布緊急采購，3分鐘左右您將得到回復。

采購需求

(若只采購一條型號，填寫一行即可)

發布成功！您可以繼續發布采購。也可以進入我的后臺，查看報價

發布成功！您可以繼續發布采購。也可以進入我的后臺，查看報價

*型號 *數量 廠商 批號 封裝
添加更多采購

我的聯系方式

*
*
*
主站蜘蛛池模板： 滨州市| 鸡泽县| 称多县| 井冈山市| 靖远县| 台中县| 巴林右旗| 亚东县| 银川市| 内江市| 尼木县| 克东县| 三穗县| 射阳县| 濮阳市| 阳城县| 衡阳市| 大厂| 招远市| 南召县| 古蔺县| 雅江县| 达日县| 搜索| 屏边| 枣强县| 台湾省| 会宁县| 巴塘县| 石棉县| 赤壁市| 农安县| 喀喇沁旗| 隆德县| 惠州市| 阿荣旗| 乡城县| 隆尧县| 乐昌市| 天水市| 泗洪县|