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參數資料
| 型號： | W45B012 |
| 廠商： | WINBOND ELECTRONICS CORP |
| 元件分類： | FLASH |
| 英文描述： | 4 Mbit Uniform Sector, Serial Flash Memory |
| 中文描述： | 4兆位統一部門，串行閃存 |
| 文件頁數： | 4/16頁 |
| 文件大?。?/td> | 283K |
| 代理商： | W45B012 |
Preliminary W45B012
- 4 -
Write Protect
The #WP pin provides inadvertent write protection. The #WP pin must be held high for any Erase or
Program operation. The #WP pin is "don't care" for all other operations. In typical use, the #WP pin is
connected to V
SS
with a standard pull-down resistor. #WP is then driven high whenever an Erase or
Program operation is required. If the #WP pin is tied to V
DD
with a pull-up resistor, then all operations
may occur and the write protection feature is disabled. The #WP pin has an internal pull-up and could
remain unconnected when not used.
DEVICE OPERATION INSTRUCTION
BUS CYCLE
1
2
3
4
5
6
7
Operation/Type
Command Address
1
Address
Address
Data
Dummy
Data
Read
Sector-erase
2
FFh
A
23
A
16
A
15
A
8
A
23
A
16
A
15
A
8
X
A
7
A
0
X
X
X
Dout
20h
Dout
X
Chip-erase
60h
X
X
Dout
X
Byte-program
10h
A
23
A
16
A
15
A
8
Dout
A
7
A
0
Din
X
Software-status
9Fh
Read Manufacture
ID
Read Device ID
3
90h
X
X
A
0 = 0
DAh
90h
X
X
A
0 = 1
98h
Notes:
1. A23
A17 are "Don't Care" for device.
2. A16
A12 are used to determine sector address, A11
A8 are don't care.
3. With A16
A1 = 0, W45B010 Device ID = 98h, is read with A0 = 1.
DEVICE OPERATION TABLE
OPERATION
SI
SO
#CE
1
#WP
#RESET
Read
Sector-erase
X
Dout
Low
X
High
X
X
Low
High
High
Chip-erase
X
X
Low
High
High
Byte-program
Din
X
Low
High
High
Software-status
Reset2
X
Dout
Low
X
High
X
X
X
X
Low
Read Manufacture ID
X
Dout
Low
X
High
Read Device ID
X
Dout
Low
X
High
Notes:
1. A high to low transition on #CE will be required to start any device operation except for Reset.
2. The #RESET low will return the device to standby and terminate any Erase or Program operation in progress.
相關PDF資料 |
PDF描述 |
|---|---|
| W45B012P | 4 Mbit Uniform Sector, Serial Flash Memory |
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相關代理商/技術參數 |
參數描述 |
|---|---|
| W45B012P | 制造商:WINBOND 制造商全稱:Winbond 功能描述:1M x 1 SERIAL FLASH MEMORY |
| W45B012Z | 制造商:WINBOND 制造商全稱:Winbond 功能描述:1M x 1 SERIAL FLASH MEMORY |
| W45B512 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:512k * 1 SERIAL FLASH |
| W45DUF35-1 | 制造商:Stancor 功能描述: |
| W45NM50 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:N-CHANNEL 550V Tjmax - 0.08ohm - 45A TO-247 MDmesh TM MOSFET |
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