参数资料
型号: SST38VF6404-90-5I-B3KE
厂商: Microchip Technology
文件页数: 21/64页
文件大小: 0K
描述: IC FLASH MPF 64MBIT 90NS 48TFBGA
特色产品: SST Serial and Parallel Flash Memory
标准包装: 480
系列: SST38
格式 - 存储器: 闪存
存储器类型: FLASH
存储容量: 64M(4M x 16)
速度: 90ns
接口: 并联
电源电压: 2.7 V ~ 3.6 V
工作温度: -40°C ~ 85°C
封装/外壳: 48-TFBGA
供应商设备封装: 48-TFBGA
包装: 托盘
64 Mbit (x16) Advanced Multi-Purpose Flash Plus
A Microchip Technology Company
SST38VF6401 / SST38VF6402 / SST38VF6403 / SST38VF6404
Data Sheet
The password can be read using the Password Read command to verify the desired password has
been programmed. SST recommends testing the password before permanently choosing Password
Mode.
To test the password, do the following:
1.
2.
3.
4.
5.
6.
7.
8.
9.
Enter the Global Lock of NVPBs mode.
Set the Global Lock Bit to ‘0’, and verify the value.
Exit the Global Lock of NVPBs mode.
Enter the Password Commands mode.
Submit the 64-bit password with the Submit Password command.
Wait 2 μs for the device to verify the password.
Exit the Password Commands mode.
Re-enter the Global Lock of NVPBs mode
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 DQ 2 and DQ 1 OTP bits of the PSR to explicitly choose Pass-
word mode. Once the Password mode has been selected, the Password Read and Password Program
commands are permanently 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 command is
issued while in Password mode, the data presented 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 mod-
ified. Therefore, SST strongly recommends that users explicitly choose Password Mode in the PSR.
?2011 Silicon Storage Technology, Inc.
21
DS-25015A
04/11
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