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

W19B320AT/B
6.3.4
6.3.5
6.3.6
6.3.7
DQ2: Toggle Bit II...........................................................................................................17
Reading Toggle Bits DQ6/DQ2 ......................................................................................17
DQ5: Exceeded Timing Limits ........................................................................................17
DQ3: Sector Erase Timer ...............................................................................................18
7. TABLE OF OPERATION MODES ............................................................................................ 19
7.1 Device Bus Operations ................................................................................................. 19
7.2 AUTOSELECT Codes (High Voltage Method) ............................................................. 19
7.3 Sector Address Table (Top Boot Block) ....................................................................... 20
7.4 Sector Address Table (Bottom Boot Block) .................................................................. 22
7.5 CFI Query Identification String...................................................................................... 26
7.5.1 System Interface String ..................................................................................................26
7.5.2 Device Geometry Definition ............................................................................................27
7.5.3 Primary Vendor-Specific Extended Query ......................................................................28
7.5.4 Command Definitions .....................................................................................................29
7.5.5 Write Operation Status ...................................................................................................30
7.6 Temporary Sector Unprotect Algorithm ........................................................................ 31
7.7 In-System Sector Protect/Unprotect Algorithms........................................................... 32
7.8 Security Sector Protect Verify....................................................................................... 33
7.9 Program Algorithm........................................................................................................ 33
7.10 Erase Algorithm ............................................................................................................ 34
7.11 Data Polling Algorithm .................................................................................................. 34
7.12 Toggle Bit Algorithm ..................................................................................................... 35
8. ELECTRICAL CHARACTERISTICS......................................................................................... 36
8.1 Absolute Maximum Ratings .......................................................................................... 36
8.2 Operating Ranges......................................................................................................... 36
8.3 DC Characteristics........................................................................................................ 37
8.3.1 CMOS Compatible..........................................................................................................37
8.4 AC Characteristics ........................................................................................................ 38
8.4.1 Test Condition ................................................................................................................38
8.4.2 AC Test Load and Waveforms .......................................................................................38
8.5 Read-Only Operations .................................................................................................. 39
8.6 Hardware Reset (#RESET) .......................................................................................... 39
8.7 Word/Byte Configuration (#BYTE)................................................................................ 39
8.8 Erase and Program Operation...................................................................................... 40
8.9 Temporary Sector Unprotect ........................................................................................ 40
8.10 Alternate #CE Controlled Erase and Program Operations........................................... 41
9. TIMING WAVEFORMS ............................................................................................................. 42
9.1 AC Read Waveform...................................................................................................... 42
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