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参数资料
| 型号： | SST38VF6401-90-4C-EKE |
| 厂商： | SILICON STORAGE TECHNOLOGY INC |
| 元件分类： | PROM |
| 英文描述： | 4M X 16 FLASH 2.7V PROM, 90 ns, PDSO48 |
| 封装： | 12 X 20 MM, ROHS COMPLIANT, MO-142DD, TSOP1-48 |
| 文件页数： | 2/55页 |
| 文件大小： | 1547K |
| 代理商： | SST38VF6401-90-4C-EKE |
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10
Preliminary Specification
64 Mbit (x16) Advanced Multi-Purpose Flash Plus
SST38VF6401 / SST38VF6402 / SST38VF6403 / SST38VF6404
2008 Silicon Storage Technology, Inc.
S71309-03-000
08/08
9. Read the Global Lock Bit with the Global Lock Bit
Status Read command. The Global Lock bit
should now be ‘1’.
After verifying the password, program the DQ2 and DQ1
OTP bits of the PSR to explicitly choose Password mode.
Once the Password mode has been selected, the Pass-
word Read and Password Program commands are perma-
nently disabled. There is no longer any method for reading
or modifying the password. In addition, SST is unable to
read or modify the password. If a Password Read com-
mand is issued while in Password mode, the data pre-
sented for each word of the password is FFFFh.
If the Password Mode is not explicitly chosen in the PSR,
then the password can still be read and modified. There-
fore, SST strongly recommends that users explicitly choose
Password Mode in the PSR.
Irreversible Block Locking
The SST38VF6401/6402/6403/6404 provides Irreversible
Block Locking, a feature that allows users to customize the
size of Read-Only Memory (ROM) on the device and pro-
vides more flexibility than One-Time Programmable (OTP)
memory.
Applying Irreversible Block Locking turns user-selected
memory areas into ROM by permanently disabling Pro-
gram and Erase operations to these chosen areas. Any
area that becomes ROM cannot be changed back to Flash.
Any memory blocks in the main memory, including boot
blocks, can be irreversibly locked. In non-uniform boot block
devices (SST38VF6403 and SST38VF6404) each 4 KW
sector in the boot area can be irreversibly locked. If desired,
all blocks in the main memory can be irreversibly locked.
To use Irreversible Block Locking do the following:
1. Global Lock Bit should be ‘1’. The Irreversible
Block Lock command is disabled when Global
Lock Bit is ‘0’.
2. Enter the Non-Volatile Block Protection mode.
3. Use the NVPB Program command to protect only
the blocks that are to be changed into ROM.
4. Exit the Non-Volatile Block Protection mode.
5. Issue the Irreversible Block Lock command (see
Table 11 for details).
The Irreversible Block Lock command can only be used
once. Issuing the command after the first time has no effect
on the device.
Important: Once the Irreversible Block Lock command is
used, the state of the NVPBs can no longer be changed or
overridden. Therefore, the following features no longer
have any effect on the device:
Global Lock of NVPBs feature
Password feature
NVPB Program command
NVPB Erase command
DQ2 and DQ1 of PSR
In addition, WP# has no effect on any memory in the boot
block area that has been irreversibly locked.
To verify whether the Irreversible Block Lock command has
already been issued, enter the Product ID mode and read
address 5FEH. If DQ0 = 0, then Irreversible Block Lock has
already been executed. When using this feature to deter-
mine if a specific block is ROM, use the NVPB Status
Read.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SST38VF6401-90-5C-B3KE | 功能描述:闪存 64M (4Mx16) 90ns 2.7-3.6V Commercial RoHS:否 制造商:ON Semiconductor 数据总线宽度:1 bit 存储类型:Flash 存储容量:2 MB 结构:256 K x 8 定时类型: 接口类型:SPI 访问时间: 电源电压-最大:3.6 V 电源电压-最小:2.3 V 最大工作电流:15 mA 工作温度:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体: 封装:Reel |
| SST38VF6401-90-5C-EKE | 功能描述:闪存 64M (4Mx16) 90ns 2.7-3.6V Commercial RoHS:否 制造商:ON Semiconductor 数据总线宽度:1 bit 存储类型:Flash 存储容量:2 MB 结构:256 K x 8 定时类型: 接口类型:SPI 访问时间: 电源电压-最大:3.6 V 电源电压-最小:2.3 V 最大工作电流:15 mA 工作温度:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体: 封装:Reel |
| SST38VF6401-90-5C-EKE-T | 功能描述:闪存 2.7 to 3.6V 64Mbit Parallel Adv MPF+ RoHS:否 制造商:ON Semiconductor 数据总线宽度:1 bit 存储类型:Flash 存储容量:2 MB 结构:256 K x 8 定时类型: 接口类型:SPI 访问时间: 电源电压-最大:3.6 V 电源电压-最小:2.3 V 最大工作电流:15 mA 工作温度:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体: 封装:Reel |
| SST38VF6401-90-5I-B3KE | 功能描述:闪存 2.7 to 3.6V 64Mbit Parallel Adv MPF+ RoHS:否 制造商:ON Semiconductor 数据总线宽度:1 bit 存储类型:Flash 存储容量:2 MB 结构:256 K x 8 定时类型: 接口类型:SPI 访问时间: 电源电压-最大:3.6 V 电源电压-最小:2.3 V 最大工作电流:15 mA 工作温度:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体: 封装:Reel |
| SST38VF6401-90-5I-B3KE-T | 制造商:Microchip Technology 功能描述:Flash Parallel 3.3V 64Mbit 4M x 16bit 90ns 48-Pin TFBGA T/R 制造商:Microchip Technology Inc 功能描述:2.7V TO 3.6V 64MBIT PM PARALLEL ADVANCED MPF+ - Tape and Reel 制造商:Microchip Technology Inc 功能描述:IC FLASH 64MBIT 90NS 48TFBGA 制造商:Microchip Technology Inc 功能描述:2.7Vto3.6V 64Mb ParAdvanced MPF+ |
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