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参数资料
| 型号： | W28J800TT90L |
| 元件分类： | EEPROM |
| 英文描述： | EEPROM |
| 中文描述： | EEPROM的 |
| 文件页数： | 15/51页 |
| 文件大小： | 1468K |
| 代理商： | W28J800TT90L |
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W28J800B/T
Table 3. Command Definitions
(10)
FIRST BUS CYCLE
SECOND BUS CYCLE
COMMAND
BUS CYCLES
REQ’D.
Oper(1)
Addr(2)
Data(3)
Oper(1) Addr(2) Data(3)
Read Array/Reset
1
Write
X
FFH
Read Identifier Codes
≥
2 (Note 4)
Write
X
90H
Read
IA
ID
Read Status Register
2
Write
X
70H
Read
X
SRD
Clear Status Register
1
Write
X
50H
Block Erase
2 (Note 5)
Write
X
20H
Write
BA
D0H
Full Chip Erase
2
Write
X
30H
Write
X
D0H
Word/Byte Write
2 (Note 5, 6)
Write
X
40H or
10H
Write
WA
WD
Block Erase and Word/Byte
Write Suspend
1 (Note 5)
Write
X
B0H
Block Erase and Word/Byte
Write Resume
1 (Note 5)
Write
X
D0H
Set Block Lock-Bit
2 (Note 8)
Write
X
60H
Write
BA
01H
Clear Block Lock-Bits
2 (Note 7, 8)
Write
X
60H
Write
X
D0H
Set Permanent Lock-Bit
2 (Note 9)
Write
X
60H
Write
X
F1H
OTP Program
2
Write
X
C0H
Write
OA
OD
Notes:
1. BUS operations are defined in Table 2.1 and Table 2.2.
2. X = Any valid address within the device.
IA = Identifier Code Address: see Figure 4.
BA = Address within the block being erased.
WA = Address of memory location to be written.
OA = Address of OTP block to be written: see Figure 5.
3. ID = Data read from identifier codes.
SRD = Data read from status register. See Table 6 for a description of the status register bits.
WD = Data to be written at location WA. Data is latched on the rising edge of #WE or #CE (whichever goes high first).
OD = Data to be written at location OA. Data is latched on the rising edge of #WE or #CE (whichever goes high first).
4. Following the Read Identifier Codes command, read operations access manufacturer, device, block lock configuration and
permanent lock configuration codes. See Read Identifier Codes Command section for details.
5. If #WP is V
IL
, boot blocks are locked without block lock-bits state. If #WP is V
IH
, boot blocks are locked by block lockbits. The
parameter and main blocks are locked by block lock-bits without #WP state.
6. Either 40H or 10H are recognized by the WSM as the word/byte write setup.
7. The clear block lock-bits operation simultaneously clears all block lock-bits.
8. If the permanent lock-bit is set, Set Block Lock-Bit and Clear Block Lock-Bits commands can not be done.
9. Once the permanent lock-bit is set, permanent lock-bit reset is unable.
10. Commands other than those shown above are reserved by Winbond for future device implementations and should not be
used.
Publication Release Date: October 31, 2002
- 15 -
Revision A3
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