th50vsf3583aasb TOSHIBA Semiconductor CORPORATION, th50vsf3583aasb Datasheet - Page 26

• Manufacturer Part Number: th50vsf3583aasb
• Description: Sram And Flash Memory Mixed Multi-chip Package
• Manufacturer: TOSHIBA Semiconductor CORPORATION

Hidden Rom Area
consists of one block. Data Read, Write, and Protect can be performed on the block. Because Protect cannot be
released, once the block is protected, data in the block cannot be overwritten.
Normally, memory cell data are accessed. To access the Hidden ROM area, input a Hidden ROM mode Entry
command. At this time, the device enters Hidden ROM mode, allowing Read, Write, Erase, and Block Protect.
Write and Erase operations are the same as Auto operations except that the device is in Hidden ROM mode. To
protect the Hidden ROM area, use the Block Protect function. Operation of Block Protect here is the same as in
normal Block Protect except that V
protection cannot be released even using a Temporary Block Unprotect function. Use Block Protect carefully.
Note that in Hidden ROM mode, simultaneous operation cannot be performed. Therefore, do not access areas
other than the Hidden ROM area.
Hidden Rom Area Address Table
TH50VSF3582AASB
TH50VSF3583AASB
The TH50VSF3582/3583AASB features a 64-Kbyte Hidden ROM area apart from the memory cells. The area
The Hidden ROM area is located in the address space indicated in the Hidden ROM Area Address Table.
To exit Hidden ROM mode, use the Hidden ROM Mode Exit command. The device returns to Read mode.
TYPE
BOTTOM BOOT BLOCK
TOP BOOT BLOCK
ARCHITECTURE
BOOT BLOCK
IH
rather than V
3F0000H~3FFFFFH
000000H~00FFFFH
ADDRESS RANGE
BYTE MODE
ID
is input to RESET . Once the block is protected,
64 Kbytes
64 Kbytes
SIZE
TH50VSF3582/3583AASB
1F8000H~1FFFFFH
000000H~007FFFH
ADDRESS RANGE
2001-06-08 26/50
WORD MODE
32 Kwords
32 Kwords
SIZE