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參數資料
| 型號： | W29C020-70B |
| 廠商： | WINBOND ELECTRONICS CORP |
| 元件分類： | PROM |
| 英文描述： | 256K X 8 CMOS FLASH MEMORY |
| 中文描述： | 256K X 8 FLASH 5V PROM, 70 ns, PDIP32 |
| 封裝： | 0.600 INCH, PLASTIC, DIP-32 |
| 文件頁數： | 8/21頁 |
| 文件大小： | 267K |
| 代理商： | W29C020-70B |
W29C020
- 8 -
Command Codes for Product Identification and Boot Block Lockout Detection
BYTE
SEQUENCE
ALTERNATE PRODUCT (7)
IDENTIFICATION/BOOT BLOCK
LOCKOUT DETECTION ENTRY
ADDRESS
5555
2AAA
5555
-
-
-
Pause 10
μ
S
SOFTWARE PRODUCT
IDENTIFICATION/BOOT BLOCK
LOCKOUT DETECTION ENTRY
ADDRESS
5555H
2AAAH
5555H
5555H
2AAAH
5555H
Pause 10
μ
S
SOFTWARE PRODUCT
IDENTIFICATION/BOOT BLOCK
LOCKOUT DETECTION EXIT
ADDRESS
5555H
2AAAH
5555H
-
-
-
Pause 10
μ
S
DATA
AA
55
90
-
-
-
DATA
AAH
55H
80H
AAH
55H
60H
DATA
AAH
55H
F0H
-
-
-
0 Write
1 Write
2 Write
3 Write
4 Write
5 Write
Software Product Identification and Boot Block Lockout Detection Acquisition Flow
Product
Identification
Entry (1)
Load data AA
to
address 5555
Load data 55
to
address 2AAA
Load data 80
to
address 5555
Load data AA
to
address 5555
Load data 55
to
address 2AAA
Load data 60
to
address 5555
Product
Identification
and Boot Block
Lockout Detection
Mode (3)
Read address = 00000
data = DA
Read address = 00001
data = 45
Read address = 00002
data = FF/FE
(4)
Read address = 3FFF2
data = FF/FE
(5)
Product
Identification
Exit (1)
Load data AA
to
address 5555
Load data 55
to
address 2AAA
Load data F0
to
address 5555
Pause 10 S
Normal Mode
(6)
(2)
(2)
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
A16 = V
IL
; manufacture code is read for A0 = V
IL
; device code is read for A0 = V
IH
.
(3) The device does not remain in identification and boot block (address 0002 Hex/3FFF2 Hex respond to first 8K/last 8K) lockout detection mode if
power down.
(4), (5) If the output data is "FF Hex," the boot block programming lockout feature is activated; if the output data "FE Hex," the lockout feature is
inactivated and the block can be programmed.
(6) The device returns to standard operation mode.
(7) This product supports both the JEDEC standard 3 byte command code sequence and original 6 byte command code sequence. For new
designs, Winbond recommends that the 3 byte command code sequence be used.
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相關代理商/技術參數 |
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| W29C020-90 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:256K X 8 CMOS FLASH MEMORY |
| W29C020-90A | 制造商:WINBOND 制造商全稱:Winbond 功能描述:256K X 8 CMOS FLASH MEMORY |
| W29C020-90B | 制造商:WINBOND 制造商全稱:Winbond 功能描述:256K X 8 CMOS FLASH MEMORY |
| W29C020C | 制造商:WINBOND 制造商全稱:Winbond 功能描述:256K X 8 CMOS FLASH MEMORY |
| W29C020C-12 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:256K X 8 CMOS FLASH MEMORY |
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