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
6.1.2
6.1.3
6.1.4
6.1.5
6.1.6
6.1.7
6.1.8
6.1.9
Word/Byte Configuration ..........................................................................................................9
Reading Array Data..................................................................................................................9
Writing Commands/Command Sequences...............................................................................9
Standby Mode ........................................................................................................................10
Automatic Sleep Mode ...........................................................................................................10
#RESET: Hardware Reset Pin................................................................................................10
Output Disable Mode..............................................................................................................11
autoselect Mode .....................................................................................................................11
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
6.2.2
6.2.3
6.2.4
6.2.5
6.2.6
6.2.7
6.2.8
Reading Array Data................................................................................................................13
Reset Command.....................................................................................................................14
AUTOSELECT Command Sequence.....................................................................................14
Byte/Word Program Command Sequence..............................................................................15
Unlock Bypass Command Sequence .....................................................................................15
Chip Erase Command Sequence ...........................................................................................16
Sector Erase Command Sequence ........................................................................................16
Erase Suspend/Erase Resume Commands ...........................................................................17
6.3 Write Operation Status.......................................................................................................... 17
6.3.1
6.3.2
6.3.3
6.3.4
6.3.5
6.3.6
DQ7: #Data Polling.................................................................................................................17
RY/#BY: Ready/#Busy ...........................................................................................................18
DQ6: Toggle Bit I....................................................................................................................18
DQ2: Toggle Bit II...................................................................................................................19
Reading Toggle Bits DQ6/DQ2...............................................................................................19
DQ5: Exceeded Timing Limits ................................................................................................19
Publication Release Date: Dec. 25, 2007
- 1 -
Revision A3
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