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參數資料
| 型號： | W39V080FAQ |
| 廠商： | WINBOND ELECTRONICS CORP |
| 元件分類： | PROM |
| 英文描述： | 1M 】 8 CMOS FLASH MEMORY WITH FWH INTERFACE |
| 中文描述： | 1M X 8 FLASH 3.3V PROM, 11 ns, PDSO32 |
| 封裝： | 8 X 14 MM, STSOP-32 |
| 文件頁數： | 10/35頁 |
| 文件大小： | 301K |
| 代理商： | W39V080FAQ |
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W39V080FA
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Register Based Block Locking Value Definitions Table
BIT [7:3]
BIT 2
BIT 1
BIT 0
RESULT
00000
0
0
0
Full Access.
00000
0
0
1
Write Lock. Default State.
00000
0
1
0
Locked Open (Full Access, Lock Down).
00000
0
1
1
Write Locked, Locked Down.
00000
1
0
0
Read Locked.
00000
1
0
1
Read & Write Locked.
00000
1
1
0
Read Locked, Locked Down.
00000
1
1
1
Read & Write Locked, Locked Down.
Read Lock
Any attempt to read the data of read locked block will result in “00H.” The default state of any block is
unlocked upon power up. User can clear or set the write lock bit anytime as long as the lock down bit is
not set.
Write Lock
This is the default state of blocks upon power up. Before any program or erase to the specified block,
user should clear the write lock bit first. User can clear or set the write lock bit anytime as long as the
lock down bit is not set. The write lock function is in conjunction with the hardware protect pins, #WP &
TBL. When hardware protect pins are enabled, it will override the register block locking functions and
write lock the blocks no matter how the status of the register bits. Reading the register bit will not reflect
the status of the #WP or #TBL pins.
Lock Down
The default state of lock down bit for any block is unlocked. This bit can be set only once; any further
attempt to set or clear is ignored. Only the reset from #RESET or #INIT can clear the lock down bit.
Once the lock down bit is set for a block, then the write lock bit & read lock bit of that block will not be
set or cleared, and keep its current state.
6.12.3 Product Identification Registers
There is an alternative software method to read out the Product Identification in both the Programmer
interface mode and the FWH interface mode. Thus, the programming equipment can automatically
matches the device with its proper erase and programming algorithms.
In the full-chip(8Mb) FWH interface mode, a read from FFBC, 0000(hex) can output the manufacturer
code, DA(hex). A read from FFBC, 0001(hex) can output the device code, D3(hex).
For Dual-BIOS(4Mbx2) FWH mode , a read from FFBC, 0000(hex) can output the manufacturer code,
DA(hex). A read from FFBC,0001(hex) can output the device code 93(hex).
In the software access mode, a JEDEC 3-byte command sequence can be used to access the product
ID for programmer interface mode. A read from address 0000(hex) outputs the manufacturer code,
DA(hex). A read from address 0001(hex) outputs the device code, D3(hex).” The product ID operation
can be terminated by a three-byte command sequence or an alternate one-byte command sequence
(see Command Definition table for detail).
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| W39V080FAQZ | 制造商:WINBOND 制造商全稱:Winbond 功能描述:1M 】 8 CMOS FLASH MEMORY WITH FWH INTERFACE |
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