W19B(L)320ST/B Data Sheet
4M × 8/2M × 16 3V(3.3V) FLASH MEMORY
Table of Contents-
1.
2.
3.
4.
5.
6.
GENERAL DESCRIPTION ......................................................................................................... 4
FEATURES................................................................................................................................. 4
PIN CONFIGURATIONS ............................................................................................................ 5
BLOCK DIAGRAM ...................................................................................................................... 5
PIN DESCRIPTION..................................................................................................................... 5
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 ( ) .......................................................................................................8
#WP
6.1.11 Temporary Sector Unprotect ..........................................................................................9
6.1.12 Security Sector Flash Memory Region ...........................................................................9
6.1.13 Hardware Data Protection ............................................................................................10
Command Definitions ................................................................................................... 10
6.2.1 Reading Array Data........................................................................................................11
6.2.2 Reset Command.............................................................................................................11
6.2.3 Autoselect Command Sequence ....................................................................................11
6.2.4 Enter Security Sector/Exit Security Sector Command Sequence...................................12
6.2.5 Byte/Word Program Command Sequence......................................................................12
6.2.6 Unlock Bypass Command Sequence .............................................................................12
6.2.7 Chip Erase Command Sequence ...................................................................................13
6.2.8 Sector Erase Command Sequence ................................................................................13
6.2.9 Erase Suspend/Erase Resume Commands ...................................................................14
Write Operation Status ................................................................................................. 14
6.3.1 DQ7: #Data Polling.........................................................................................................14
6.3.2 RY/#BY: Ready/#Busy ...................................................................................................15
6.3.3 DQ6: Toggle Bit I............................................................................................................15
6.3.4 DQ2: Toggle Bit II...........................................................................................................16
6.2
6.3
Publication Release Date: March 23, 2004
- 1 -
Revision A2
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