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参数资料
| 型号： | S29GL032M10TAIR02 |
| 厂商： | SPANSION LLC |
| 元件分类： | PROM |
| 英文描述： | MirrorBit Flash Family |
| 中文描述： | 4M X 8 FLASH 3V PROM, 100 ns, PDSO40 |
| 封装： | MO-142-EC, TSOP-40 |
| 文件页数： | 157/160页 |
| 文件大小： | 4727K |
| 代理商： | S29GL032M10TAIR02 |
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96
S29GLxxxM MirrorBitTM Flash Family
S29GLxxxM_00A5 April 30, 2004
Pr e l i m i n a r y
SecSi (Secured Silicon) Sector Flash Memory Region
The SecSi (Secured Silicon) Sector feature provides a Flash memory region that
enables permanent part identification through an Electronic Serial Number
(ESN). The SecSi Sector is 256 bytes in length, and uses a SecSi Sector Indicator
Bit (DQ7) to indicate whether or not the SecSi Sector is locked when shipped from
the factory. This bit is permanently set at the factory and cannot be changed,
which prevents cloning of a factory locked part. This ensures the security of the
ESN once the product is shipped to the field.
The factory offers the device with the SecSi Sector either customer lockable
(standard shipping option) or factory locked (contact a Spansion sales represen-
tative for ordering information). The customer-lockable version is shipped with
the SecSi Sector unprotected, allowing customers to program the sector after re-
ceiving the device. The customer-lockable version also has the SecSi Sector
Indicator Bit permanently set to a “0.” The factory-locked version is always pro-
tected when shipped from the factory, and has the SecSi (Secured Silicon) Sector
Indicator Bit permanently set to a “1.” Thus, the SecSi Sector Indicator Bit pre-
vents customer-lockable devices from being used to replace devices that are
factory locked. Note that the ACC function and unlock bypass modes are not
available when the SecSi Sector is enabled.
The SecSi sector address space in this device is allocated as follows:
The system accesses the SecSi Sector through a command sequence (see “Write
Protect (WP#)”). After the system has written the Enter SecSi Sector command
sequence, it may read the SecSi Sector by using the addresses normally occupied
by the first sector (SA0). This mode of operation continues until the system issues
the Exit SecSi Sector command sequence, or until power is removed from the de-
vice. On power-up, or following a hardware reset, the device reverts to sending
commands to sector SA0.
Customer Lockable: SecSi Sector NOT Programmed or Protected
At the Factory
Unless otherwise specified, the device is shipped such that the customer may
program and protect the 256-byte SecSi sector.
The system may program the SecSi Sector using the write-buffer, accelerated
and/or unlock bypass methods, in addition to the standard programming com-
mand sequence. See Command Definitions.
Programming and protecting the SecSi Sector must be used with caution since,
once protected, there is no procedure available for unprotecting the SecSi Sector
area and none of the bits in the SecSi Sector memory space can be modified in
any way.
The SecSi Sector area can be protected using one of the following procedures:
Write the three-cycle Enter SecSi Sector Region command sequence, and
then follow the in-system sector protect algorithm as shown in Figure 2, ex-
cept that RESET# may be at either VIH or VID. This allows in-system protec-
SecSi Sector Address
Range
Customer Lockable
ESN Factory Locked
ExpressFlash
Factory Locked
000000h–000007h
Determined by
customer
ESN
ESN or determined by
customer
000008h–00007Fh
Unavailable
Determined by
customer
相关PDF资料 |
PDF描述 |
|---|---|
| S29GL032M10TAIR12 | MirrorBit Flash Family |
| S29GL032M10TAIR22 | MirrorBit Flash Family |
| S29GL032M10TAIR32 | MirrorBit Flash Family |
| S29GL032M10TAIR42 | CAP .1UF 1000V CER 10% X7R RADL |
| S29GL032M11TCIR42 | 2M X 16 FLASH 3V PROM, 110 ns, PDSO48 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| S29GL032M10TAIR03 | 制造商:SPANSION 制造商全称:SPANSION 功能描述:MirrorBit Flash Family |
| S29GL032M10TAIR10 | 制造商:SPANSION 制造商全称:SPANSION 功能描述:MirrorBit Flash Family |
| S29GL032M10TAIR12 | 制造商:SPANSION 制造商全称:SPANSION 功能描述:MirrorBit Flash Family |
| S29GL032M10TAIR13 | 制造商:SPANSION 制造商全称:SPANSION 功能描述:MirrorBit Flash Family |
| S29GL032M10TAIR20 | 制造商:SPANSION 制造商全称:SPANSION 功能描述:3.0 Volt-only Page Mode Flash Memory featuring 0.23 um MirrorBit process technology |
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