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参数资料
| 型号： | W39L020P-90Z |
| 厂商： | WINBOND ELECTRONICS CORP |
| 元件分类： | PROM |
| 英文描述： | 256K X 8 FLASH 3.3V PROM, 90 ns, PQCC32 |
| 封装： | LEAD FREE, PLASTIC, LCC-32 |
| 文件页数： | 9/29页 |
| 文件大小： | 294K |
| 代理商： | W39L020P-90Z |
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W39L020
Publication Release Date: June 6, 2005
- 17 -
Revision A7
7.4 Software Product Identification and Boot Block Lockout Detection Flow Chart
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
Dt ti
Mode (3)
Read address = 0000
data = DA
Read address = 0001
Read address=02/3FFF2
for Bottom/Top
data:in DQ0="1" or "0"
for 64K Boot Block
or DQ1="1" or "0"
for 16K Boot Block
(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
Load data AA
to
address 5555
Pause 10 S
data = B5
Notes for software product identification/boot block lockout detection:
(1) Data Format: DQ7
DQ0 (Hex); Address Format: A14 A0 (Hex)
(2) A1
A17 = 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) If the output data in DQ0 or DQ1= " 1 " the boot block programming lockout feature is activated; if the output data
in DQ0 or DQ1= " 0," the lockout feature is inactivated and the matched boot block can be programmed.
(5) The device returns to standard operation mode.
(6) Optional 1-byte cycle (write F0 hex at XXXX address) can be used to exit the product identification/boot block lockout
detection.
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PDF描述 |
|---|---|
| W39L512Q-90B | 64K X 8 FLASH 3.3V PROM, 90 ns, PDSO32 |
| W39V040FCQ | 512K X 8 FLASH 3.3V PROM, 11 ns, PDSO32 |
| W3E16M72SR250BM | 16M X 72 DDR DRAM, 0.75 ns, PBGA219 |
| W3E32M64S-200BM | 32M X 64 DDR DRAM, 0.8 ns, PBGA219 |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| W39L020Q-70 | 制造商:WINBOND 制造商全称:Winbond 功能描述:128K X 8 CMOS FLASH MEMORY |
| W39L020Q-70B | 制造商:WINBOND 制造商全称:Winbond 功能描述:128K X 8 CMOS FLASH MEMORY |
| W39L020Q-90 | 制造商:WINBOND 制造商全称:Winbond 功能描述:128K X 8 CMOS FLASH MEMORY |
| W39L020Q-90B | 制造商:WINBOND 制造商全称:Winbond 功能描述:128K X 8 CMOS FLASH MEMORY |
| W39L020T-70 | 制造商:WINBOND 制造商全称:Winbond 功能描述:128K X 8 CMOS FLASH MEMORY |
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