- 您現在的位置：買賣IC網 > PDF目錄382300 > MC28U064NACA (SAMSUNG SEMICONDUCTOR CO. LTD.) MultiMediaCard Specification PDF資料下載
參數資料
| 型號： | MC28U064NACA |
| 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： | 10/66頁 |
| 文件大?。?/td> | 1422K |
| 代理商： | MC28U064NACA |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁當前第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁
MultiMediaCard
TM
10
2.6.7 Data Protection in the Flash Card
Every sector is protected with an Error Correction Code (ECC). The ECC is generated (in the memory
card) when the sectors are written and validated when the data is read. If defects are found, the data is
corrected prior to transmission to the host.
The MultiMediaCard can be considered error free and no additional data protection is needed.
However, if an application uses additional, external, ECC protection, the data organization is defined in
the user writeable section of the CSD register
2.6.8 Erase
The smallest erasable unit in the MultiMediaCard is a erase group. In order to speed up the erase
procedure, multiple erase groups can be erased in the same time. The erase operation is divided into
two stages.
Tagging - Selecting the Sectors for Erasing
To facilitate selection, a first command with the starting address is followed by a second command with
the final address, and all erase groups within this range will be selected for erase.
Erasing - Starting the Erase Process
Tagging can address erase groups. An arbitrary selection of erase groups may be erased at one time.
Tagging and erasing must follow a strict command sequence (refer to the MultiMediaCard standard
specification for details).
2.6.9 Write Protection
The MultiMediaCard erase groups are grouped into write protection groups. Commands are provided
for limiting and enabling write and erase privileges for each group individually. The current write protect
map can be read using SEND_WRITE_PROT command.
In addition two, permanent and temporary, card levels write protection options are available.
Both can be set using the PROGRAM_CSD command (see below). The permanent write protect bit,
once set, cannot be cleared.
The One Time Programmable (OTP) characteristic of the permanent write protect bit is implemented in
the MultiMediaCard controller firmware and not with a physical OTP cell.
2.6.10 Copy Bit
The content of an MultiMediaCard can be marked as an original or a copy using the copy bit in the
CSD register. Once the Copy bit is set (marked as a copy) it cannot be cleared.
The Copy bit of the MultiMediaCard is programmed (during test and formatting on the manufacturing
floor) as a copy. The MultiMediaCard can be purchased with the copy bit set (copy) or cleared,
indicating the card is a master.
The One Time Programmable (OTP) characteristic of the Copy bit is implemented in the
MultiMediaCard controller firmware and not with a physical OTP cell.
2.6.11 The CSD Register
All the configuration information of the MultiMediaCard is stored in the CSD register. The MSB bytes of
the register contain manufacturer data and the two least significant bytes contains the host controlled
data - the card Copy and write protection and the user ECC register.
相關PDF資料 |
PDF描述 |
|---|---|
| MC28U128HACA | MultiMediaCard Specification |
| MC28U128NACA | MultiMediaCard Specification |
| MC1GU032HACA | Film Capacitor; Capacitor Type:Motor Start/Motor Run; Voltage Rating:370VAC; Capacitor Dielectric Material:Polypropylene; Capacitance:2uF; Capacitance Tolerance:+/- 10%; Lead Pitch:20.6mm; Series:MPF; Termination:Quick Connect RoHS Compliant: Yes |
| MC1GU512HACA | Film Capacitor; Capacitor Type:Motor Start/Motor Run; Voltage Rating:370VAC; Capacitor Dielectric Material:Polypropylene; Capacitance:3uF; Capacitance Tolerance: 10%; Lead Pitch:20.6mm; Leaded Process Compatible:Yes; Series:MPF RoHS Compliant: Yes |
| MC1DU512HACA | Film Capacitor; Capacitor Type:Motor Start/Motor Run; Voltage Rating:370VAC; Capacitor Dielectric Material:Polypropylene; Capacitance:4uF; Capacitance Tolerance:+/- 10%; Lead Pitch:20.64mm; Package/Case:32; Series:MPF |
相關代理商/技術參數 |
參數描述 |
|---|---|
| MC28U064NACA-0QC00 | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:MultiMediaCard Specification |
| MC28U064NACB-0QC00 | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:MultiMediaCard Specification |
| MC28U064NACC-0QC00 | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:MultiMediaCard Specification |
| MC28U064NAFA-0QC00 | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:MultiMediaCard Specification |
| MC28U064NAFB-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。