W39L040A Datasheet, PDF (1/26 Pages) Winbond – 512K × 8 CMOS FLASH MEMORY

W39L040A Data Sheet
Table of Contents-
512K × 8 CMOS FLASH MEMORY
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 Bus 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
6.2 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 ..................................................................................................... 6
6.3.1 Read Command ...............................................................................................................6
6.3.2 Auto-select Command ......................................................................................................7
6.3.3 Byte Program Command ..................................................................................................7
6.3.4 Chip Erase Command ......................................................................................................7
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
6.5 Table of Operating Modes .............................................................................................. 9
6.5.1 Device Bus Operations.....................................................................................................9
6.5.2 Auto-select Codes (High Voltage Method) .......................................................................9
6.5.3 Sector Address Table .....................................................................................................10
6.5.4 Command Definitions .....................................................................................................10
6.6 Embedded Programming Algorithm ............................................................................. 11
6.7 Embedded Erase Algorithm.......................................................................................... 12
Publication Release Date:April 14, 2005
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Revision A3