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Winbond
Winbond


W19B320BT

CMOS flash memory


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W19B320BT pdf
W19B320BT/B DATASHEET
Table of Contents-
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www.DataSheet4U.com
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GENERAL DESCRIPTION .............................................................................................................. 4
FEATURES ...................................................................................................................................... 5
PIN CONFIGURATIONS.................................................................................................................. 7
BLOCK DIAGRAM ........................................................................................................................... 8
PIN DESCRIPTION.......................................................................................................................... 8
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
- 1 - Revision A3



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W19B320BT pdf
W19B320BT/B DATASHEET
7.
www.DataSheet4U.com
8.
9.
6.3.7 DQ3: Sector Erase Timer .......................................................................................................20
TABLE OF OPERATION MODES ................................................................................................. 21
7.1 Device Bus Operations ......................................................................................................... 21
7.2 AUTOSELECT Codes (High Voltage Method) ..................................................................... 22
7.3 Sector Address Table (Top Boot Block) ............................................................................... 23
7.4 Sector Address Table (Bottom Boot Block) .......................................................................... 25
7.5 Top Boot Sector/Sector Block Address for Protection/Unprotection) ................................... 27
7.6 CFI Query Identification String.............................................................................................. 29
7.6.1 System Interface String ..........................................................................................................29
7.6.2 Device Geometry Definition ....................................................................................................30
7.6.3 Primary Vendor-Specific Extended Query ..............................................................................31
7.6.4 Command Definitions .............................................................................................................32
7.6.5 Write Operation Status ...........................................................................................................33
7.7 Temporary Sector Unprotect Algorithm ................................................................................ 33
7.8 In-System Sector Protect/Unprotect Algorithms ................................................................... 35
7.9 Security Sector Protect Verify ............................................................................................... 36
7.10 Program Algorithm ................................................................................................................ 36
7.11 Erase Algorithm..................................................................................................................... 37
7.12 Data Polling Algorithm........................................................................................................... 37
7.13 Toggle Bit Algorithm.............................................................................................................. 38
ELECTRICAL CHARACTERISTICS.............................................................................................. 39
8.1 Absolute Maximum Ratings .................................................................................................. 39
8.2 Operating Ranges ................................................................................................................. 39
8.3 DC Characteristics ................................................................................................................ 40
8.4 CMOS Compatible ................................................................................................................ 40
8.5 AC Characteristics ................................................................................................................ 41
8.6 Test Condition ....................................................................................................................... 41
8.6.1 AC Test Load and Waveforms ...............................................................................................41
8.7 Read-Only Operations .......................................................................................................... 42
8.8 Hardware Reset (#RESET)................................................................................................... 42
8.9 Word/Byte Configuration (#BYTE) ........................................................................................ 42
8.10 Erase and Program Operation .............................................................................................. 43
8.11 Temporary Sector Unprotect................................................................................................. 43
8.12 Alternate #CE Controlled Erase and Program Operations ................................................... 44
TIMING WAVEFORMS .................................................................................................................. 45
9.1 AC Read Waveform .............................................................................................................. 45
Publication Release Date:Dec.25, 2007
- 2 - Revisionv A3



Part Number W19B320BT
Description CMOS flash memory
Maker Winbond - Winbond
Total Page 56 Pages
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