參數(shù)資料
型號(hào)： S29WS256N0LBFI011
廠商： Spansion Inc.
英文描述： 256/128/64 MEGABIT CMOS 1.8 VOLT ONLY SIMULTANEOUS READ/WRITE BURST MODE FLASH MEMORY
中文描述： 256/128/64兆位的CMOS 1.8伏只有同時(shí)讀/寫(xiě)突發(fā)模式閃存
文件頁(yè)數(shù)： 59/99頁(yè)
文件大小： 1091K
代理商： S29WS256N0LBFI011
60
S29WS-N_00_G0 January 25, 2005
Adva nce
Information
10 Secured Silicon Sector Flash Memory Region
The Secured Silicon Sector provides an extra Flash memory region that enables permanent part
identification through an Electronic Serial Number (ESN). The Secured Silicon Sector is 256 words
in length that consists of 128 words for factory data and 128 words for customer-secured areas.
All Secured Silicon reads outside of the 256-word address range returns invalid data. The Factory
Indicator Bit, DQ7, (at Autoselect address 03h) is used to indicate whether or not the Factory Se-
cured Silicon Sector is locked when shipped from the factory. The Customer Indicator Bit (DQ6)
is used to indicate whether or not the Customer Secured Silicon Sector is locked when shipped
from the factory.
Please note the following general conditions:
While Secured Silicon Sector access is enabled, simultaneous operations are allowed ex-
cept for Bank 0.
On power-up, or following a hardware reset, the device reverts to sending commands to
the normal address space.
Reads can be performed in the Asynchronous or Synchronous mode.
Burst mode reads within Secured Silicon Sector wrap from address FFh back to address
00h.
Reads outside of sector 0 return memory array data.
Continuous burst read past the maximum address is undefined.
Sector 0 is remapped from memory array to Secured Silicon Sector array.
Once the Secured Silicon Sector Entry Command is issued, the Secured Silicon Sector Exit
command must be issued to exit Secured Silicon Sector Mode.
The Secured Silicon Sector is not accessible when the device is executing an Embedded
Program or Embedded Erase algorithm.
Table 10.1.
Secured Silicon Sector Addresses
10.1
Factory Secured Silicon Sector
The Factory Secured Silicon Sector is always protected when shipped from the factory and has
the Factory Indicator Bit (DQ7) permanently set to a “1”. This prevents cloning of a factory locked
part and ensures the security of the ESN and customer code once the product is shipped to the
field.
These devices are available pre programmed with one of the following:
A random, 8 Word secure ESN only within the Factory Secured Silicon Sector
Customer code within the Customer Secured Silicon Sector through the SpansionTM pro-
gramming service.
Both a random, secure ESN and customer code through the Spansion programming ser-
vice.
Customers may opt to have their code programmed through the Spansion programming services.
Spansion programs the customer's code, with or without the random ESN. The devices are then
shipped from the Spansion factory with the Factory Secured Silicon Sector and Customer Secured
Silicon Sector permanently locked. Contact your local representative for details on using Spansion
programming services.
Sector
Sector Size
Address Range
Customer
128 words
000080h-0000FFh
Factory
128 words
000000h-00007Fh
相關(guān)PDF資料
PDF描述
S2L40U 1.4 A, SILICON, RECTIFIER DIODE
S2SD-05-24-L-02.75-SR 10 CONTACT(S), FEMALE, TWO PART BOARD CONNECTOR, IDC, SOCKET
S2SD-05-24-L-02.75-S 10 CONTACT(S), FEMALE, TWO PART BOARD CONNECTOR, IDC, SOCKET
S2SD-05-24C-L-02.75-SR 10 CONTACT(S), FEMALE, TWO PART BOARD CONNECTOR, IDC, SOCKET
S2SD-05-24C-L-02.75-S 10 CONTACT(S), FEMALE, TWO PART BOARD CONNECTOR, IDC, SOCKET
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