W19B320AT/B
6.3.4 DQ2: Toggle Bit II...........................................................................................................17
6.3.5 Reading Toggle Bits DQ6/DQ2 ......................................................................................17
6.3.6 DQ5: Exceeded Timing Limits........................................................................................17
6.3.7 DQ3: Sector Erase Timer ...............................................................................................18
7.
TABLE OF OPERATION MODES ............................................................................................ 19
7.1
7.2
7.3
7.4
7.5
Device Bus Operations................................................................................................. 19
AUTOSELECT Codes (High Voltage Method)............................................................. 19
Sector Address Table (Top Boot Block) ....................................................................... 20
Sector Address Table (Bottom Boot Block).................................................................. 22
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
7.7
7.8
7.9
Temporary Sector Unprotect Algorithm........................................................................ 31
In-System Sector Protect/Unprotect Algorithms........................................................... 32
Security Sector Protect Verify....................................................................................... 33
Program Algorithm........................................................................................................ 33
7.10 Erase Algorithm ............................................................................................................ 34
7.11 Data Polling Algorithm .................................................................................................. 34
7.12 Toggle Bit Algorithm ..................................................................................................... 35
ELECTRICAL CHARACTERISTICS......................................................................................... 36
8.
8.1
8.2
8.3
Absolute Maximum Ratings.......................................................................................... 36
Operating Ranges......................................................................................................... 36
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
8.6
8.7
8.8
8.9
Read-Only Operations.................................................................................................. 39
Hardware Reset (#RESET) .......................................................................................... 39
Word/Byte Configuration (#BYTE)................................................................................ 39
Erase and Program Operation...................................................................................... 40
Temporary Sector Unprotect ........................................................................................ 40
8.10 Alternate #CE Controlled Erase and Program Operations........................................... 41
TIMING WAVEFORMS............................................................................................................. 42
9.
9.1
AC Read Waveform...................................................................................................... 42
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