W19B320B Datasheet, PDF (1/51 Pages) Winbond – 32Mbit, 2.7~3.6-volt single bank CMOS flash memory

W19B320BT/B DATASHEET
Table of Contents-
1. GENERAL DESCRIPTION ......................................................................................................................4
2. FEATURES ..............................................................................................................................................4
3. PIN CONFIGURATIONS .........................................................................................................................5
4. BLOCK DIAGRAM ...................................................................................................................................5
5. PIN DESCRIPTION..................................................................................................................................5
6. FUNCTIONAL DESCRIPTION ................................................................................................................6
6.1 Device Bus Operation.....................................................................................................................6
6.1.1 Word/Byte Configuration ................................................................................................................6
6.1.2 Reading Array Data ........................................................................................................................6
6.1.3 Writing Commands/Command Sequences ....................................................................................6
6.1.4 Standby Mode.................................................................................................................................7
6.1.5 Automatic Sleep Mode....................................................................................................................7
6.1.6 #RESET: Hardware Reset Pin .......................................................................................................7
6.1.7 Output Disable Mode ......................................................................................................................8
6.1.8 AUTOSELECT Mode......................................................................................................................8
6.1.9 Sector/Sector Block Protection and Unprotection ..........................................................................8
6.1.10 Write Protect (#WP)........................................................................................................................8
6.1.11 Temporary Sector Unprotect ..........................................................................................................8
6.1.12 Security Sector Flash Memory Region ...........................................................................................9
6.1.13 Hardware Data Protection ............................................................................................................10
6.2 Command Definitions ...................................................................................................................10
6.2.1 Reading Array Data ......................................................................................................................10
6.2.2 Reset Command...........................................................................................................................10
6.2.3 AUTOSELECT Command Sequence...........................................................................................11
6.2.4 Byte/Word Program Command Sequence ...................................................................................11
6.2.5 Unlock Bypass Command Sequence...........................................................................................12
6.2.6 Chip Erase Command Sequence .................................................................................................12
6.2.7 Sector Erase Command Sequence ..............................................................................................13
6.3 Write Operation Status .................................................................................................................13
6.3.1 DQ7: #Data Polling .......................................................................................................................13
6.3.2 RY/#BY: Ready/#Busy..................................................................................................................14
6.3.3 DQ6: Toggle Bit I ..........................................................................................................................14
6.3.4 Reading Toggle Bits DQ6/DQ2 ....................................................................................................14
Publication Release Date: Dec. 22, 2008
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Revision A5