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参数资料
| 型号： | W49F002U-90BN |
| 厂商： | WINBOND ELECTRONICS CORP |
| 元件分类： | PROM |
| 英文描述： | 256K X 8 FLASH 5V PROM, 90 ns, PDIP32 |
| 封装： | PLASTIC, DIP-32 |
| 文件页数： | 4/27页 |
| 文件大小： | 233K |
| 代理商： | W49F002U-90BN |
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W49F002U
- 12 -
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 = 0000
data = 00DA
Read address = 0001
data = 00AE
Read address = 0002
data in DQ0 =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
Load data AA
to
address 5555
Pause 10 S
Notes for software product identification/boot block lockout detection:
(1) Data Format: DQ15
DQ8 (Don't Care), DQ7 DQ0 (Hex); Address Format: A14 A0 (Hex)
(2) A1
A16 = 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 = 1, the boot block programming lockout feature is activated; if the output data in DQ0 = 0, the lockout feature is
inactivated and the block can be programmed.
(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 |
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|---|---|
| W49F002UP12B | 制造商:WINBOND 制造商全称:Winbond 功能描述:256K X 8 CMOS FLASH MEMORY |
| W49F002UP70B | 制造商:WINBOND 制造商全称:Winbond 功能描述:256K X 8 CMOS FLASH MEMORY |
| W49F002UP90B | 制造商:WINBOND 制造商全称:Winbond 功能描述:256K X 8 CMOS FLASH MEMORY |
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| W49F002UT70B | 制造商:WINBOND 制造商全称:Winbond 功能描述:256K X 8 CMOS FLASH MEMORY |
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