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参数资料
| 型号： | W49F002UT70BN |
| 厂商： | WINBOND ELECTRONICS CORP |
| 元件分类： | PROM |
| 英文描述： | 256K X 8 FLASH 5V PROM, 70 ns, PDSO32 |
| 封装： | 8 X 20 MM, TSOP-32 |
| 文件页数： | 1/30页 |
| 文件大小： | 0K |
| 代理商： | W49F002UT70BN |
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W49F002U Data Sheet
256K
× 8 CMOS FLASH MEMORY
Publication Release Date: April 19, 2005
- 1 -
Revision A7
Table of Content-
1.
GENERAL DESCRIPTION ......................................................................................................... 3
2.
FEATURES ................................................................................................................................. 3
3.
PIN CONFIGURATIONS............................................................................................................. 4
4.
BLOCK DIAGRAM ...................................................................................................................... 4
5.
PIN DESCRIPTION..................................................................................................................... 4
6.
FUNCTIONAL DESCRIPTION.................................................................................................... 5
6.1
Device Operation ............................................................................................................ 5
6.1.1
Read Mode.......................................................................................................................5
6.1.2
Write Mode .......................................................................................................................5
6.1.3
Standby Mode ..................................................................................................................5
6.1.4
Output Disable Mode........................................................................................................5
6.1.5
Auto-select Mode..............................................................................................................5
6.1.6
Reset Mode: Hardware Reset ..........................................................................................6
6.2
Data Protection ............................................................................................................... 6
6.2.1
Low VDD Inhibit................................................................................................................6
6.2.2
Write Pulse "Glitch" Protection .........................................................................................6
6.2.3
Logical Inhibit ...................................................................................................................6
6.2.4
Power-up Write and Read Inhibit......................................................................................6
6.3
Command Definitions ..................................................................................................... 7
6.3.1
Read Command ...............................................................................................................7
6.3.2
Auto-select Command ......................................................................................................7
6.3.3
Byte Program Command ..................................................................................................7
6.3.4
Chip Erase Command ......................................................................................................8
6.3.5
Sector Erase Command ...................................................................................................8
6.4
Write Operation Status ................................................................................................... 8
6.4.1
DQ7: Data Polling.............................................................................................................8
6.4.2
DQ6: Toggle Bit................................................................................................................9
7.
TABLE OF OPERATING MODES .............................................................................................. 9
7.1
Device Bus Operations ................................................................................................... 9
7.2
Auto-select Codes (High Voltage Method) ................................................................... 10
7.3
Embedded Programming Algorithm.............................................................................. 11
7.4
Embedded Erase Algorithm.......................................................................................... 12
7.5
Embedded #Data Polling Algorithm.............................................................................. 13
7.6
Embedded Toggle Bit Algorithm ................................................................................... 13
7.7
Software Product Identification and Boot Block Lockout Detection Acquisition Flow .. 14
7.8
Boot Block Lockout Enable Acquisition Flow................................................................ 15
8.
DC CHARACTERISTICS .......................................................................................................... 16
8.1
Absolute Maximum Ratings .......................................................................................... 16
8.2
DC Operating Characteristics ....................................................................................... 16
8.3
Power-up Timing........................................................................................................... 17
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