参数资料
型号: S29CD032J1JFAI122
厂商: SPANSION LLC
元件分类: PROM
英文描述: 1M X 32 FLASH 2.7V PROM, 54 ns, PBGA80
封装: 13 X 11 MM, 1 MM PITCH, FORTIFIED, BGA-80
文件页数: 44/78页
文件大小: 1825K
代理商: S29CD032J1JFAI122
September 27, 2006 S29CD-J_CL-J_00_B1
S29CD-J & S29CL-J Flash Family
47
Pr el im i n a r y
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 a 256-
byte flash memory area that is either programmable at the customer, or by Spansion at the re-
quest of the customer. See Table 10.1 for the Secured Silicon Sector address ranges.
All Secured Silicon reads outside of the 256-byte address range return invalid data.
The device allows Simultaneous Read/Write operation while the Secured Silicon Sector is en-
abled. However, several restrictions are associated with Simultaneous Read/Write operation and
device operation when the Secured Silicon Sector is enabled:
1. The Secured Silicon Sector is not available for reading while the Password Unlock, any PPB
program/erase operation, or Password programming are in progress. Reading to any location
in the small bank will return the status of these operations until these operations have com-
pleted execution.
2. Programming the DYB associated with the overlaid boot-block sector results in the DYB NOT
being updated. This occurs only when the Secured Silicon sector is not enabled.
3. Reading the DYB associated with the overlaid boot-block sector when the PPB Lock/DYB Ver-
ify command is issued, causes the read command to return invalid data. This function occurs
only when the Secured Silicon Sector is not enabled.
4. All commands are available for execution when the Secured Silicon Sector is enabled, except
the following:
Any Unlock Bypass command
CFI
Accelerated Program
Program and Sector Erase Suspend
Program and Sector Erase Resume
Issuing the above commands while the Secured Silicon Sector is enabled results in the command
being ignored.
5. It is valid to execute the Sector Erase command on any sector other than the Secured Silicon
Sector when the Secured Silicon Sector is enabled. However, it is not possible to erase the
Secured Silicon Sector using the Sector Erase Command, as it is a one-time programmable
(OTP) area that can not be erased.
6. Executing the Chip Erase command is permitted when the Secured Silicon Sector is enabled.
The Chip Erase command erases all sectors in the memory array, except for sector 0 in top-
boot block configuration, or sector 45 in bottom-boot block configuration. The Secured Sili-
con Sector is a one-time programmable memory area that cannot be erased.
7. Executing the Secured Silicon Sector Entry command during program or erase suspend mode
is allowed. The Sector Erase/Program Resume command is disabled when the Secured Sili-
con sector is enabled; the user cannot resume programming of the memory array until the
Exit Secured Silicon Sector command is written.
8. Address range 00040h–007FFh for the top bootblock, and FF00h–FFF7Fh return invalid data
when addressed with the Secured Silicon sector enabled.
Table 10.1 Secured Silicon Sector Addresses
Ordering Option
Sector Size (Bytes)
Address Range
Top Boot
256
00000h-0003Fh (16 Mb & 32 Mb)
Bottom Boot
256
FFFC0h–FFFFFh (32 Mb)
7FFC0h–7FFFFh (16 Mb)
相关PDF资料
PDF描述
S29CD032J1MFAN120 1M X 32 FLASH 2.7V PROM, 54 ns, PBGA80
S29CD032J1MQFN133 1M X 32 FLASH 2.7V PROM, 54 ns, PQFP80
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S29CL016J0MFAI113 512K X 32 FLASH 3.3V PROM, 54 ns, PBGA80
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