W19B320ATB Datasheet, PDF (1/53 Pages) Winbond – 4M × 8/2M × 16 BITS 3V FLEXIBLE BANK FLASH MEMORY

W19B320AT/B Data Sheet
4M × 8/2M × 16 BITS
3V FLEXIBLE BANK FLASH MEMORY
Table of Contents-
1. GENERAL DESCRIPTION ......................................................................................................... 4
2. FEATURES ................................................................................................................................. 4
3. PIN CONFIGURATIONS ............................................................................................................ 5
4. BLOCK DIAGRAM ...................................................................................................................... 6
5. PIN DESCRIPTION..................................................................................................................... 6
6. FUNCTIONAL DESCRIPTION ................................................................................................... 7
6.1 Device Bus Operation..................................................................................................... 7
6.1.1 Word/Byte Configuration ..................................................................................................7
6.1.2 Reading Array Data ..........................................................................................................7
6.1.3 Writing Commands/Command Sequences.......................................................................7
6.1.4 Simultaneous Read/Write Operations with Zero Latency .................................................8
6.1.5 Standby Mode ..................................................................................................................8
6.1.6 Automatic Sleep Mode .....................................................................................................8
6.1.7 #RESET: Hardware Reset Pin..........................................................................................9
6.1.8 Output Disable Mode........................................................................................................9
6.1.9 Autoselect Mode...............................................................................................................9
6.1.10 Sector/Sector Block Protection and Unprotection...........................................................9
6.1.11 Write Protect (#WP) .....................................................................................................10
6.1.12 Temporary Sector Unprotect ........................................................................................10
6.1.13 Security Sector Flash Memory Region .........................................................................10
6.1.14 Hardware Data Protection ............................................................................................11
6.2 Command Definitions ................................................................................................... 12
6.2.1 Reading Array Data ........................................................................................................12
6.2.2 Reset Command.............................................................................................................12
6.2.3 AUTOSELECT Command Sequence .............................................................................13
6.2.4 Byte/Word Program Command Sequence......................................................................13
6.2.5 Unlock Bypass Command Sequence .............................................................................14
6.2.6 Chip Erase Command Sequence ...................................................................................14
6.2.7 Sector Erase Command Sequence ................................................................................14
6.2.8 Erase Suspend/Erase Resume Commands ...................................................................15
6.3 Write Operation Status ................................................................................................. 16
6.3.1 DQ7: #Data Polling.........................................................................................................16
6.3.2 RY/#BY: Ready/#Busy ...................................................................................................16
6.3.3 DQ6: Toggle Bit I............................................................................................................16
Publication Release Date: December 27, 2005
-1-
Revision A4