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SST25WF020-40-5I-QAE 데이터시트(PDF) 11 Page - Silicon Storage Technology, Inc

부품명 SST25WF020-40-5I-QAE
상세설명  512 Kbit / 1 Mbit / 2 Mbit / 4Mbit 1.8V SPI Serial Flash
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제조업체  SST [Silicon Storage Technology, Inc]
홈페이지  http://www.sst.com/
Logo SST - Silicon Storage Technology, Inc

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Data Sheet
512 Kbit / 1 Mbit / 2 Mbit / 4 Mbit 1.8V SPI Serial Flash
SST25WF512 / SST25WF010 / SST25WF020 / SST25WF040
11
©2009 Silicon Storage Technology, Inc.
S71328-08-000
11/09
TABLE 10: Device Operation Instructions for SST25WF020 AND SST25WF040
Instruction
Description
Op Code Cycle1
1. One bus cycle is eight clock periods.
Address
Cycle(s)2
2. Address bits above the most significant bit of each density can be VIL or VIH.
Dummy
Cycle(s)
Data
Cycle(s)
Maximum
Frequency
Read
Read Memory
0000 0011b (03H)
3
0
1 to
20 MHz
High-Speed Read
Read Memory at Higher Speed 0000 1011b (0BH)
3
1
1 to
40 MHz
4 KByte Sector-
Erase3
3. 4 KByte Sector-Erase addresses: use AMS-A12, remaining addresses are don’t care but must be set either at VIL or VIH.
Erase 4 KByte of memory
array
0010 0000b (20H)
3
0
0
32 KByte Block-
Erase4
4. 32 KByte Block-Erase addresses: use AMS-A15, remaining addresses are don’t care but must be set either at VIL or VIH.
Erase 32 KByte block
of memory array
0101 0010b (52H)
3
0
0
64 KByte Block-
Erase5
5. 64 KByte Block-Erase addresses: use AMS-A16, remaining addresses are don’t care but must be set either at VIL or VIH.
Erase 64 KByte block
of memory array
1101 1000b (D8H)
3
0
0
Chip-Erase
Erase Full Memory Array
0110 0000b (60H) or
1100 0111b (C7H)
00
0
Byte-Program
To Program One Data Byte
0000 0010b (02H)
3
0
1
AAI-Word-Program6
6. To continue programming to the next sequential address location, enter the 8-bit command, ADH, followed by 2 bytes of data to be
programmed. Data Byte 0 will be programmed into the initial address [A23-A1] with A0=0, Data Byte 1 will be programmed into the
initial address [A23-A1] with A0 = 1.
Auto Address Increment
Programming
1010 1101b (ADH)
3
0
2 to
RDSR7
7. The Read-Status-Register is continuous with ongoing clock cycles until terminated by a low to high transition on CE#.
Read-Status-Register
0000 0101b (05H)
0
0
1 to
EWSR8
8. Either EWSR or WREN followed by WRSR will write to the Status register. The EWSR-WRSR sequence provides backward compat-
ibility to the SST25VF/LF series. The WREN-WRSR sequence is recommended for new designs.
Enable-Write-Status-Register
0110 0000b (50H)
0
0
0
WRSR
Write-Status-Register
0000 0001b (01H)
0
0
1
WREN8
Write-Enable
0000 0110b (06H)
0
0
0
WRDI
Write-Disable
0000 0100b (04H)
0
0
0
RDID9
9. Manufacturer’s ID is read with A0=0, and Device ID is read with A0=1. All other address bits are 00H. The Manufacturer’s ID and
device ID output stream is continuous until terminated by a low-to-high transition on CE#.
Read-ID
1001 0000b (90H) or
1010 1011b (ABH)
30
1 to
EBSY
Enable SO to output RY/BY#
status during AAI programming
0111 0000b (70H)
0
0
0
DBSY
Disable SO to output RY/BY#
status during AAI programming
1000 0000b (80H)
0
0
0
JEDEC-ID
JEDEC ID read
1001 1111b (9FH)
0
0
3 to
EHLD
Enable HOLD# pin functionality
of the RST#/HOLD# pin
1010 1010b (AAH)
0
0
0
T10.0
1328


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