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SST25VF020-20-4I-QAE 데이터시트(PDF) 4 Page - Silicon Storage Technology, Inc

부품명 SST25VF020-20-4I-QAE
상세설명  2 Mbit / 4 Mbit SPI Serial Flash
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제조업체  SST [Silicon Storage Technology, Inc]
홈페이지  http://www.sst.com/
Logo SST - Silicon Storage Technology, Inc

SST25VF020-20-4I-QAE 데이터시트(HTML) 4 Page - Silicon Storage Technology, Inc

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Data Sheet
2 Mbit SPI Serial Flash
SST25VF020
©2006 Silicon Storage Technology, Inc.
S71231-07-000
10/06
PRODUCT IDENTIFICATION
MEMORY ORGANIZATION
The SST25VF020 SuperFlash memory array is organized
in 4 KByte sectors with 32 KByte overlay blocks.
DEVICE OPERATION
The SST25VF020 is accessed through the SPI (Serial
Peripheral Interface) bus compatible protocol. The SPI bus
consist of four control lines; Chip Enable (CE#) is used to
select the device, and data is accessed through the Serial
Data Input (SI), Serial Data Output (SO), and Serial Clock
(SCK).
The SST25VF020 supports both Mode 0 (0,0) and Mode 3
(1,1) of SPI bus operations. The difference between the
two modes, as shown in Figure 3, is the state of the SCK
signal when the bus master is in Stand-by mode and no
data is being transferred. The SCK signal is low for Mode 0
and SCK signal is high for Mode 3. For both modes, the
Serial Data In (SI) is sampled at the rising edge of the SCK
clock signal and the Serial Data Output (SO) is driven after
the falling edge of the SCK clock signal.
FIGURE 3: SPI Protocol
TABLE
2: Product Identification
Address
Data
Manufacturer’s ID
00000H
BFH
Device ID
SST25VF020
00001H
43H
T2.0 1231
1231 F02.1
MODE 3
SCK
SI
SO
CE#
MODE 3
DON'T CARE
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
MODE 0
MODE 0
HIGH IMPEDANCE
MSB
MSB


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