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参数资料
| 型号： | W39V040AQZ |
| 厂商： | WINBOND ELECTRONICS CORP |
| 元件分类： | PROM |
| 英文描述： | 512K X 8 FLASH 3.3V PROM, 11 ns, PDSO32 |
| 封装： | LEAD FREE, 8 X 14 MM, STSOP-32 |
| 文件页数： | 8/39页 |
| 文件大小： | 440K |
| 代理商： | W39V040AQZ |
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W39V040A
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6.20 Software Product Identification and Boot Block Lockout Detection Acquisition
Flow
Product
Identification
Entry (1)
Load data 55
to
address 2AAA
Load data 90
to
address 5555
Pause 10 S
Product
Identification
and Boot Block
Lockout Detection
Mode (3)
Read address = 00000
data = DA
Read address = 00001
data = 3D
Read address = 00002
DQ0/DQ1 of data outputs
= 1/0
(4)
Product
Identification Exit (6)
Load data 55
to
address 2AAA
Load data F0
to
address 5555
Normal Mode
(5)
(2)
Load data AA
to
address 5555
μ
Load data AA
to
address 5555
Pause 10 S
μ
Notes for software product identification/boot block lockout detection:
(1) Data Format: DQ7
DQ0 (Hex); Address Format: A14 A0 (Hex)
(2) A1
A18 = VIL; manufacture code is read for A0 = VIL; device code is read for A0 = VIH.
(3) The device does not remain in “identification and boot block lockout detection” mode if power down.
(4) The DQ[3:0] to indicate the sectors protect status as below:
DQ0
DQ1
DQ2
DQ3
0
64Kbytes Boot Block
Unlocked by Software
16Kbytes Boot Block
Unlocked by Software
64Kbytes Boot Block Unlocked
by #TBL hardware trapping
Whole Chip Unlocked by #WP
hardware trapping Except Boot
Block
1
64Kbytes Boot Block
Locked by Software
16Kbytes Boot Block
Locked by Software
64Kbytes Boot Block Locked
by #TBL hardware trapping
Whole Chip Locked by #WP
hardware trapping Except Boot
Block
(5) The device returns to standard operation mode.
(6) Optional 1-write cycle (write F0 hex at XXXX address) can be used to exit the “product identification/boot block lockout
detection.”
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相关代理商/技术参数 |
参数描述 |
|---|---|
| W39V040B | 制造商:WINBOND 制造商全称:Winbond 功能描述:W39V040B |
| W39V040B_07 | 制造商:WINBOND 制造商全称:Winbond 功能描述:512K × 8 CMOS FLASH MEMORY WITH LPC INTERFACE |
| W39V040BP | 制造商:WINBOND 制造商全称:Winbond 功能描述:W39V040B |
| W39V040BPZ | 制造商:WINBOND 制造商全称:Winbond 功能描述:W39V040B |
| W39V040BQ | 制造商:WINBOND 制造商全称:Winbond 功能描述:W39V040B |
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