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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
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
7.5.2
7.5.3
7.5.4
7.5.5
System Interface String ..................................................................................................26
Device Geometry Definition ............................................................................................27
Primary Vendor-Specific Extended Query ......................................................................28
Command Definitions .....................................................................................................29
Write Operation Status ...................................................................................................30
7.6
7.7
7.8
7.9
7.10
7.11
7.12
Temporary Sector Unprotect Algorithm ........................................................................ 31
In-System Sector Protect/Unprotect Algorithms........................................................... 32
Security Sector Protect Verify....................................................................................... 33
Program Algorithm........................................................................................................ 33
Erase Algorithm ............................................................................................................ 34
Data Polling Algorithm .................................................................................................. 34
Toggle Bit Algorithm ..................................................................................................... 35
8.
ELECTRICAL CHARACTERISTICS......................................................................................... 36
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
8.4.2
Test Condition ................................................................................................................38
AC Test Load and Waveforms .......................................................................................38
8.5
8.6
8.7
8.8
8.9
8.10
Read-Only Operations .................................................................................................. 39
Hardware Reset (#RESET) .......................................................................................... 39
Word/Byte Configuration (#BYTE)................................................................................ 39
Erase and Program Operation...................................................................................... 40
Temporary Sector Unprotect ........................................................................................ 40
Alternate #CE Controlled Erase and Program Operations........................................... 41
9.
TIMING WAVEFORMS ............................................................................................................. 42
9.1
AC Read Waveform...................................................................................................... 42
-2-
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W19B320B 制造商:WINBOND 制造商全称:Winbond 功能描述:32Mbit, 2.7~3.6-volt single bank CMOS flash memory
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W19B320BT-H 制造商:WINBOND 制造商全称:Winbond 功能描述:2.7~3.6-volt write (program and erase) operations
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