SST34HF1621 Просмотр технического описания (PDF) - Silicon Storage Technology
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SST34HF1621 Datasheet PDF : 32 Pages
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16 Mbit Concurrent SuperFlash + 2 / 4 Mbit SRAM ComboMemory
SST34HF1621 / SST34HF1641
Data Sheet
TABLE 4: SOFTWARE COMMAND SEQUENCE
Command
Sequence
Word-Program
Sector-Erase
Block-Erase
Chip-Erase
Software ID Entry5
CFI Query Entry5
Software ID Exit/
CFI Exit6
1st Bus
Write Cycle
Addr1 Data2
5555H AAH
5555H AAH
5555H AAH
5555H AAH
5555H AAH
5555H AAH
5555H AAH
2nd Bus
Write Cycle
Addr1 Data2
2AAAH 55H
2AAAH 55H
2AAAH 55H
2AAAH 55H
2AAAH 55H
2AAAH 55H
2AAAH 55H
3rd Bus
Write Cycle
Addr1 Data2
5555H A0H
5555H 80H
5555H 80H
5555H 80H
5555H 90H
5555H 98H
5555H F0H
4th Bus
Write Cycle
Addr1 Data2
WA3 Data
5555H AAH
5555H AAH
5555H AAH
5th Bus
Write Cycle
Addr1 Data2
2AAAH 55H
2AAAH 55H
2AAAH 55H
1. Address format A14-A0 (Hex),Address A15-A19 can be VIL or VIH, but no other value, for the Command sequence.
2. Data format DQ15-DQ8 can be VIL or VIH, but no other value, for Command sequence.
3. WA = Program Word address
4. SAX for Sector-Erase; uses A19-A11 address lines
BAX for Block-Erase; uses A19-A15 address lines
5. The device does not remain in Software Product Identification mode if powered down.
6. With A20-A1 = 0;
SST Manufacturer’s ID = 00BFH, is read with A0 = 0
SST34HF1621/1641 Device ID = 2761H, is read with A0 = 1.
6th Bus
Write Cycle
Addr1 Data2
SAX4 30H
BAX4 50H
5555H 10H
T4.4 523
TABLE 5: CFI QUERY IDENTIFICATION STRING1
Address
10H
11H
12H
13H
14H
15H
16H
17H
18H
19H
1AH
Data
0051H
0052H
0059H
0001H
0007H
0000H
0000H
0000H
0000H
0000H
0000H
Data
Query Unique ASCII string “QRY”
Primary OEM command set
Address for Primary Extended Table
Alternate OEM command set (00H = none exists)
Address for Alternate OEM extended Table (00H = none exits)
1. Refer to CFI publication 100 for more details.
T5.0 523
©2001 Silicon Storage Technology, Inc.
9
S71172-05-000 10/01 523
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