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參數(shù)資料
| 型號： | HY29F040A |
| 廠商： | Hynix Semiconductor Inc. |
| 英文描述： | 512K x 8-bit CMOS 5.0 volt-only, Sector Erase Flash Memory |
| 中文描述： | 為512k × 8位CMOS 5.0伏只，扇區(qū)擦除閃存 |
| 文件頁數(shù)： | 7/40頁 |
| 文件大?。?/td> | 282K |
| 代理商： | HY29F040A |
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7
HY29F040A
COMMAND DEFINITIONS
Device operations are selected by writing
specific address and data sequences into the
Command register. Writing incorrect addresses
and data values or writing them in the improper
Table 4. Command Definitions
(1,2,3,4)
Bus
Write
Cycles
Req'd
First Bus
Write Cycle
Second Bus
Write Cycle
Third Bus
Write Cycle
Fourth Bus
Write Cycle
Fifth Bus
Write Cycle
Sixth Bus
Write Cycle
Command
Sequence
Addr
Data
Addr
Data
Addr
Data
Addr
Data
Addr
Data
Addr
Data
Read/Reset
1
XXXH
F0H
RA
RD
Read/Reset
4
5555H
AAH
2AAAH
55H
5555H
F0H
RA
RD
Electronic ID
4
5555H
AAH
2AAAH
55H
5555H
90H
XX00H
ADH
XX01H
A4H
Byte Program
4
5555H
AAH
2AAAH
55H
5555H
A0H
PA
PD
Chip Erase
6
5555H
AAH
2AAAH
55H
5555H
80H
5555H
AAH
2AAAH
55H
5555H
10H
Sector Erase
6
5555H
AAH
2AAAH
55H
5555H
80H
5555H
AAH
2AAAH
55H
SA
30H
Erase Suspend
1
XXXH
B0H
Erase Resume
1
XXXH
30H
Notes:
1.
2.
Bus Operations are defined in Table 1.
For a Command Sequence, address bits A15, A14, A13, A12, and A11 = X = Don’t care. Address bits A18, A17, A16,
and A15 = X = Don’t care for all address commands except for Program Address(PA) and Sector Address(SA).
In the case of Sector Address, address bit A15 = X = Don’t care for all addresses except for Program Address (PA)
and Sector Addresses (SA).
RA = Address of the memory location to be read.
RD = Data read from location RA during read operation.
PA = Address of the memory location to be programmed. Addresses are latched on the falling edge of the /WE pulse.
PD = Data to be programmed at location PA. Data is latched on the falling edge of /WE.
SA = Address of the sector to be erased (see Table 3).
The Erase Suspend (B0H) and Erase Resume (30H) commands are valid only while the Sector Erase opera
tion
is in progress.
3.
4.
sequence will reset the device to Read mode.
Table 4 defines the valid register command
sequences. Either Read/Reset command will
reset the device (when applicable).
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