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SST39L800A-70-4C-B3KE Datasheet(PDF) 10 Page - Microchip Technology |
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SST39L800A-70-4C-B3KE Datasheet(HTML) 10 Page - Microchip Technology |
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10 / 37 page  © 2011 Silicon Storage Technology, Inc. DS25001A 03/11 10 2 Mbit / 4 Mbit / 8 Mbit Multi-Purpose Flash SST39LF200A / SST39LF400A / SST39LF800A SST39VF200A / SST39VF400A / SST39VF800A Data Sheet A Microchip Technology Company Product Identification Mode Exit/CFI Mode Exit In order to return to the standard Read mode, the Software Product Identification mode must be exited. Exit is accomplished by issuing the Software ID Exit command sequence, which returns the device to the Read mode. This command may also be used to reset the device to the Read mode after any inad- vertent transient condition that apparently causes the device to behave abnormally, e.g., not read cor- rectly. Please note that the Software ID Exit/CFI Exit command is ignored during an internal Program or Erase operation. See Table 4 for software command codes, Figure 15 for timing waveform, and Fig- ure 20 for a flowchart. Operations Table 3: Operation Modes Selection Mode CE# OE# WE# DQ Address Read VIL VIL VIH DOUT AIN Program VIL VIH VIL DIN AIN Erase VIL VIH VIL X1 1. X can be VIL or VIH, but no other value. Sector or Block address, XXH for Chip-Erase Standby VIH X X High Z X Write Inhibit X VIL X High Z/ DOUT X XX VIH High Z/ DOUT X Product Identification Software Mode VIL VIL VIH See Table 4 T3.4 25001 Table 4: Software Command Sequence Command Sequence 1st Bus Write Cycle 2nd Bus Write Cycle 3rd Bus Write Cycle 4th Bus Write Cycle 5th Bus Write Cycle 6th Bus Write Cycle Addr 1 1. Address format A14-A0 (Hex), Addresses AMS-A15 can be VIL or VIH, but no other value, for the Command sequence. AMS = Most significant address AMS =A16 for SST39LF/VF200A, A17 for SST39LF/VF400A, and A18 for SST39LF/VF800A Data 2 2. DQ15-DQ8 can be VIL or VIH, but no other value, for the Command sequence Addr1 Data 2 Addr 1 Data 2 Addr 1 Data 2 Addr1 Data 2 Addr 1 Data 2 Word-Program 5555H AAH 2AAAH 55H 5555H A0H WA3 3. WA = Program word address Data Sector-Erase 5555H AAH 2AAAH 55H 5555H 80H 5555H AAH 2AAAH 55H SAX4 30H Block-Erase 5555H AAH 2AAAH 55H 5555H 80H 5555H AAH 2AAAH 55H BAX4 50H Chip-Erase 5555H AAH 2AAAH 55H 5555H 80H 5555H AAH 2AAAH 55H 5555H 10H Software ID Entry5,6 5555H AAH 2AAAH 55H 5555H 90H CFI Query Entry5 5555H AAH 2AAAH 55H 5555H 98H Software ID Exit7/ CFI Exit XXH F0H Software ID Exit7/ CFI Exit 5555H AAH 2AAAH 55H 5555H F0H T4.3 25001 |
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