W49F002UP90N
| Model | W49F002UP90N |
| Description | Flash, 256KX8, 90ns, PQCC32, PLASTIC, LCC-32 |
| PDF file | Total 30 pages (File size: 352K) |
| Chip Manufacturer | WINBOND |
W49F002U Data Sheet
256K
×
8 CMOS FLASH MEMORY
Table of Content-
1.
2.
3.
4.
5.
6.
GENERAL DESCRIPTION ......................................................................................................... 3
FEATURES ................................................................................................................................. 3
PIN CONFIGURATIONS............................................................................................................. 4
BLOCK DIAGRAM ...................................................................................................................... 4
PIN DESCRIPTION..................................................................................................................... 4
FUNCTIONAL DESCRIPTION.................................................................................................... 5
6.1
Device Operation ............................................................................................................ 5
6.1.1
6.1.2
6.1.3
6.1.4
6.1.5
6.1.6
Read Mode.......................................................................................................................5
Write Mode .......................................................................................................................5
Standby Mode ..................................................................................................................5
Output Disable Mode........................................................................................................5
Auto-select Mode..............................................................................................................5
Reset Mode: Hardware Reset ..........................................................................................6
Low VDD Inhibit................................................................................................................6
Write Pulse "Glitch" Protection .........................................................................................6
Logical Inhibit ...................................................................................................................6
Power-up Write and Read Inhibit......................................................................................6
Read Command ...............................................................................................................7
Auto-select Command ......................................................................................................7
Byte Program Command ..................................................................................................7
Chip Erase Command ......................................................................................................8
Sector Erase Command ...................................................................................................8
DQ7: Data Polling.............................................................................................................8
DQ6: Toggle Bit ................................................................................................................9
6.2
Data Protection ............................................................................................................... 6
6.2.1
6.2.2
6.2.3
6.2.4
6.3
Command Definitions ..................................................................................................... 7
6.3.1
6.3.2
6.3.3
6.3.4
6.3.5
6.4
Write Operation Status ................................................................................................... 8
6.4.1
6.4.2
7.
8.
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
DC CHARACTERISTICS .......................................................................................................... 16
8.1
Absolute Maximum Ratings .......................................................................................... 16
8.2
DC Operating Characteristics ....................................................................................... 16
8.3
Power-up Timing........................................................................................................... 17
Publication Release Date: April 19, 2005
Revision A7
-1-
