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W19B320BT Datasheet, PDF (1/56 Pages) Winbond – 2.7~3.6-volt write (program and erase) operations
W19B320BT/B DATASHEET
Table of Contents-
1. GENERAL DESCRIPTION .............................................................................................................. 4
2. FEATURES ...................................................................................................................................... 5
3. PIN CONFIGURATIONS.................................................................................................................. 7
4. BLOCK DIAGRAM ........................................................................................................................... 8
5. PIN DESCRIPTION.......................................................................................................................... 8
6. FUNCTIONAL DESCRIPTION ........................................................................................................ 9
6.1 Device Bus Operation ............................................................................................................. 9
6.1.1 Word/Byte Configuration ..........................................................................................................9
6.1.2 Reading Array Data ..................................................................................................................9
6.1.3 Writing Commands/Command Sequences...............................................................................9
6.1.4 Standby Mode ........................................................................................................................10
6.1.5 Automatic Sleep Mode ...........................................................................................................10
6.1.6 #RESET: Hardware Reset Pin................................................................................................10
6.1.7 Output Disable Mode..............................................................................................................11
6.1.8 autoselect Mode .....................................................................................................................11
6.1.9 Sector/Sector Block Protection and Unprotection...................................................................11
6.1.10 Write Protect (#WP)................................................................................................................11
6.1.11 Temporary Sector Unprotect ..................................................................................................12
6.1.12 Security Sector Flash Memory Region ...................................................................................12
6.1.13 Hardware Data Protection ......................................................................................................13
6.2 Command Definitions............................................................................................................ 13
6.2.1 Reading Array Data ................................................................................................................13
6.2.2 Reset Command.....................................................................................................................14
6.2.3 AUTOSELECT Command Sequence .....................................................................................14
6.2.4 Byte/Word Program Command Sequence..............................................................................15
6.2.5 Unlock Bypass Command Sequence .....................................................................................15
6.2.6 Chip Erase Command Sequence ...........................................................................................16
6.2.7 Sector Erase Command Sequence ........................................................................................16
6.2.8 Erase Suspend/Erase Resume Commands ...........................................................................17
6.3 Write Operation Status.......................................................................................................... 17
6.3.1 DQ7: #Data Polling.................................................................................................................17
6.3.2 RY/#BY: Ready/#Busy ...........................................................................................................18
6.3.3 DQ6: Toggle Bit I ....................................................................................................................18
6.3.4 DQ2: Toggle Bit II ...................................................................................................................19
6.3.5 Reading Toggle Bits DQ6/DQ2...............................................................................................19
6.3.6 DQ5: Exceeded Timing Limits ................................................................................................19
Publication Release Date: Dec. 25, 2007
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Revision A3