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參數資料
型號： W39V040FBP
廠商： WINBOND ELECTRONICS CORP
元件分類： PROM
英文描述： 512K X 8 CMOS FLASH MEMORY WITH FWH INTERFACE
中文描述： 512K X 8 FLASH 3.3V PROM, 11 ns, PQCC32
封裝： PLASTIC, LCC-32
文件頁數： 6/36頁
文件大?。?/td> 518K
代理商： W39V040FBP
W39V040FA
- 6 -
Block Locking Registers
This part provides 8 even 64Kbytes blocks, and each block can be locked by register control. These
control registers can be set or clear through memory address. Below is the detail description.
Block Locking Registers type and access memory map Table
REGISTERS
REGISTERS
TYPE
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
CONTROL
BLOCK
7
6
5
4
3
2
1
0
DEVICE PHYSICAL
ADDRESS
7FFFFh – 70000h
6FFFFh – 60000h
5FFFFh – 50000h
4FFFFh – 40000h
3FFFFh – 30000h
2FFFFh – 20000h
1FFFFh – 10000h
0FFFFh – 00000h
4GBYTES SYSTEM
MEMORY ADDRESS
FFBF0002h
FFBE0002h
FFBD0002h
FFBC0002h
FFBB0002h
FFBA0002h
FFB90002h
FFB80002h
BLR7
BLR6
BLR5
BLR4
BLR3
BLR2
BLR1
BLR0
Block Locking Register Bits Function Table
BIT
7 – 3
FUNCTION
Reserved
Read Lock
1: Prohibit to read in the block where set
0: Normal read operation in the block where clear. This is default state.
Lock Down
1: Prohibit further to set or clear the Read Lock or Write Lock bits. This Lock Down
Bit can only be set not clear. Only the device is reset or re-powered, the Lock
Down Bit is cleared.
0: Normal operation for Read Lock or Write Lock. This is the default state.
Write Lock
1: Prohibited to write in the block where set. This is default state.
0: Normal programming/erase operation in the block where clear.
2
1
0
Register Based Block Locking Value Definitions Table
BIT [7:3]
00000
00000
00000
00000
00000
00000
00000
00000
BIT 2
0
0
0
0
1
1
1
1
BIT 1
0
0
1
1
0
0
1
1
BIT 0
0
1
0
1
0
1
0
1
RESULT
Full Access.
Write Lock. Default State.
Locked Open (Full Access, Lock Down).
Write Locked, Locked Down.
Read Locked.
Read & Write Locked.
Read Locked, Locked Down.
Read & Write Locked, Locked Down.
相關PDF資料
PDF描述
W39V040FBPZ 512K X 8 CMOS FLASH MEMORY WITH FWH INTERFACE
W39V040FBQ 512K X 8 CMOS FLASH MEMORY WITH FWH INTERFACE
W39V040FBQZ 512K X 8 CMOS FLASH MEMORY WITH FWH INTERFACE
W39V080AT 1M 】 8 CMOS FLASH MEMORY WITH LPC INTERFACE
W39V080A 1M 】 8 CMOS FLASH MEMORY WITH LPC INTERFACE
相關代理商/技術參數
參數描述
W39V040FBPZ 制造商:WINBOND 制造商全稱:Winbond 功能描述:512K X 8 CMOS FLASH MEMORY WITH FWH INTERFACE
W39V040FBQ 制造商:WINBOND 制造商全稱:Winbond 功能描述:512K X 8 CMOS FLASH MEMORY WITH FWH INTERFACE
W39V040FBQZ 制造商:WINBOND 制造商全稱:Winbond 功能描述:512K X 8 CMOS FLASH MEMORY WITH FWH INTERFACE
W39V040FC 制造商:WINBOND 制造商全稱:Winbond 功能描述:512K 】 8 CMOS FLASH MEMORY WITH FWH INTERFACE
W39V040FCP 制造商:WINBOND 制造商全稱:Winbond 功能描述:512K 】 8 CMOS FLASH MEMORY WITH FWH INTERFACE
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