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SST25VF080B 数据表(PDF) 13 Page - Microchip Technology

部件名 SST25VF080B
功能描述  8 Mbit SPI Serial Flash
PDF  32 Pages
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制造商  MICROCHIP [Microchip Technology]
网页  http://www.microchip.com
标志 MICROCHIP - Microchip Technology

SST25VF080B 数据表(HTML) 13 Page - Microchip Technology

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 2015 Microchip Technology Inc.
DS20005045C-page 13
SST25VF080B
4.4.8
32-KBYTE AND 64-KBYTE BLOCK-
ERASE
The 32-KByte Block-Erase instruction clears all bits in
the selected 32 KByte block to FFH. A Block-Erase
instruction applied to a protected memory area will be
ignored. The 64-KByte Block-Erase instruction clears all bits
in the selected 64 KByte block to FFH. A Block-Erase
instruction applied to a protected memory area will be
ignored. Prior to any Write operation, the Write-Enable
(WREN) instruction must be executed. CE# must remain
active low for the duration of any command sequence.
The 32-KByte Block-Erase instruction is initiated by
executing an 8-bit command, 52H, followed by address
bits [A23-A0]. Address bits [AMS-A15] (AMS = Most Sig-
nificant Address) are used to determine block address
(BAX), remaining address bits can be VIL or VIH. CE#
must be driven high before the instruction is executed. The
64-KByte Block-Erase instruction is initiated by executing an
8-bit command D8H, followed by address bits [A23-A0].
Address bits [AMS-A15] are used to determine block address
(BAX), remaining address bits can be VIL or VIH. CE# must
be driven high before the instruction is executed. The user
may poll the Busy bit in the software status register or wait
TBE for the completion of the internal self-timed 32-
KByte Block-Erase or 64-KByte Block-Erase cycles.
See Figures 4-11 and 4-12 for the 32-KByte Block-
Erase and 64-KByte Block-Erase sequences.
FIGURE 4-11:
32-KBYTE BLOCK-ERASE SEQUENCE
FIGURE 4-12:
64-KBYTE BLOCK-ERASE SEQUENCE
CE#
SO
SI
SCK
ADDR
01 2 3 4 5 6 7 8
ADDR
ADDR
52
HIGH IMPEDANCE
15 16
23 24
31
MODE 0
MODE 3
1296 32KBklEr.0
MSB
MSB
CE#
SO
SI
SCK
ADDR
01 2 3 4 5 6 7 8
ADDR
ADDR
D8
HIGH IMPEDANCE
15 16
23 24
31
MODE 0
MODE 3
1296 63KBlkEr.0
MSB
MSB



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