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參數資料
| 型號： | S29JL032J70TFI213 |
| 廠商： | SPANSION LLC |
| 元件分類： | PROM |
| 英文描述： | 2M X 16 FLASH 3V PROM, 70 ns, PDSO48 |
| 封裝： | LEAD FREE, MO-142(D)DD, TSOP-48 |
| 文件頁數： | 18/63頁 |
| 文件大?。?/td> | 1618K |
| 代理商： | S29JL032J70TFI213 |
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August 24, 2011 S29JL032J_00_05
S29JL032J
25
Data
Sheet
8.11
Write Protect (WP#)
The Write Protect function provides a hardware method of protecting certain boot sectors without using VID.
This function is one of two provided by the WP#/ACC pin.
If the system asserts VIL on the WP#/ACC pin, the device disables program and erase functions in the two
outermost 8 kbyte boot sectors independently of whether those sectors were protected or unprotected using
the method described in Boot Sector/Sector Block Protection and Unprotection on page 23. The two
outermost 8 kbyte boot sectors are the two sectors containing the lowest addresses in a bottom-boot-
configured device, or the two sectors containing the highest addresses in a top-boot-configured device.
If the system asserts VIH on the WP#/ACC pin, the device reverts to whether the two outermost 8K Byte boot
sectors were last set to be protected or unprotected. That is, sector protection or unprotection for these two
sectors depends on whether they were last protected or unprotected using the method described in Boot
Note that the WP#/ACC pin must not be left floating or unconnected; inconsistent behavior of the device may
result.
8.12
Temporary Sector Unprotect
Note: For the following discussion, the term “sector” applies to both sectors and sector blocks. A sector block
consists of two or more adjacent sectors that are protected or unprotected at the same time (see Table 8.6
This feature allows temporary unprotection of previously protected sectors to change data in-system. The
Temporary Sector Unprotect mode is activated by setting the RESET# pin to VID. During this mode, formerly
protected sectors can be programmed or erased by selecting the sector addresses. Once VID is removed
from the RESET# pin, all the previously protected sectors are protected again. Figure 8.1 shows the
algorithm, and Figure 17.12 on page 55 shows the timing diagrams, for this feature. If the WP#/ACC pin is at
VIL, the two outermost boot sectors will remain protected during the Temporary sector Unprotect mode.
Figure 8.1 Temporary Sector Unprotect Operation
Notes:
1. All protected sectors unprotected (If WP#/ACC = VIL, the outermost two boot sectors will remain protected).
2. All previously protected sectors are protected once again.
Table 8.8 WP#/ACC Modes
WP# Input Voltage
Device Mode
VIL
Disables programming and erasing in the two outermost boot sectors
VIH
Enables programming and erasing in the two outermost boot sectors, dependent on whether they were last
protected or unprotected
VHH
Enables accelerated programming (ACC). See Accelerated Program Operation on page 15.
START
Perform Erase or
Program Operations
RESET# = VIH
Temporary Sector
Unprotect Completed
RESET# = VID
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| S29JL032J70TFI220 | 功能描述:閃存 32MB 閃存 3.0V 70ns Parallel NOR 閃存 RoHS:否 制造商:ON Semiconductor 數據總線寬度:1 bit 存儲類型:Flash 存儲容量:2 MB 結構:256 K x 8 定時類型: 接口類型:SPI 訪問時間: 電源電壓-最大:3.6 V 電源電壓-最小:2.3 V 最大工作電流:15 mA 工作溫度:- 40 C to + 85 C 安裝風格:SMD/SMT 封裝 / 箱體: 封裝:Reel |
| S29JL032J70TFI310 | 功能描述:閃存 32MB 閃存 3.0V 70ns Parallel NOR 閃存 RoHS:否 制造商:ON Semiconductor 數據總線寬度:1 bit 存儲類型:Flash 存儲容量:2 MB 結構:256 K x 8 定時類型: 接口類型:SPI 訪問時間: 電源電壓-最大:3.6 V 電源電壓-最小:2.3 V 最大工作電流:15 mA 工作溫度:- 40 C to + 85 C 安裝風格:SMD/SMT 封裝 / 箱體: 封裝:Reel |
| S29JL032J70TFI313 | 制造商:Spansion 功能描述: |
| S29JL032J70TFI320 | 功能描述:閃存 32Mb 3V 70ns Parallel NOR 閃存 RoHS:否 制造商:ON Semiconductor 數據總線寬度:1 bit 存儲類型:Flash 存儲容量:2 MB 結構:256 K x 8 定時類型: 接口類型:SPI 訪問時間: 電源電壓-最大:3.6 V 電源電壓-最小:2.3 V 最大工作電流:15 mA 工作溫度:- 40 C to + 85 C 安裝風格:SMD/SMT 封裝 / 箱體: 封裝:Reel |
| S29JL032J70TFI323 | 功能描述:閃存 32M, 3V, 70ns Parallel NOR 閃存 RoHS:否 制造商:ON Semiconductor 數據總線寬度:1 bit 存儲類型:Flash 存儲容量:2 MB 結構:256 K x 8 定時類型: 接口類型:SPI 訪問時間: 電源電壓-最大:3.6 V 電源電壓-最小:2.3 V 最大工作電流:15 mA 工作溫度:- 40 C to + 85 C 安裝風格:SMD/SMT 封裝 / 箱體: 封裝:Reel |
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