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SST25VF080B 数据表(PDF) 6 Page - Microchip Technology

部件名 SST25VF080B
功能描述  8 Mbit SPI Serial Flash
PDF  32 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  MICROCHIP [Microchip Technology]
网页  http://www.microchip.com
标志 MICROCHIP - Microchip Technology

SST25VF080B 数据表(HTML) 6 Page - Microchip Technology

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SST25VF080B
DS20005045C-page 6
 2015 Microchip Technology Inc.
4.3.3
AUTO ADDRESS INCREMENT (AAI)
The Auto Address Increment Programming-Status bit
provides status on whether the device is in AAI pro-
gramming mode or Byte-Program mode. The default at
power up is Byte-Program mode.
4.3.4
BLOCK PROTECTION (BP3,BP2,
BP1, BP0)
The Block-Protection (BP3, BP2, BP1, BP0) bits define
the size of the memory area, as defined in Table 4-3, to
be software protected against any memory Write (Pro-
gram or Erase) operation. The Write-Status-Register
(WRSR) instruction is used to program the BP3, BP2,
BP1 and BP0 bits as long as WP# is high or the Block-
Protect-Lock (BPL) bit is 0. Chip-Erase can only be
executed if Block-Protection bits are all 0. After power-
up, BP3, BP2, BP1 and BP0 are set to 1.
4.3.5
BLOCK PROTECTION LOCK-DOWN
(BPL)
WP# pin driven low (VIL), enables the Block-Protection-
Lock-Down (BPL) bit. When BPL is set to 1, it prevents
any further alteration of the BPL, BP3, BP2, BP1, and
BP0 bits. When the WP# pin is driven high (VIH), the
BPL bit has no effect and its value is “Don’t Care”. After
power-up, the BPL bit is reset to 0.
TABLE 4-3:
SOFTWARE STATUS REGISTER BLOCK PROTECTION FOR SST25VF080B1
1. X = Don’t Care (RESERVED) default is “0
Protection Level
Status Register Bit2
2. Default at power-up for BP2, BP1, and BP0 is ‘111’. (All Blocks Protected)
Protected Memory Address
BP3
BP2
BP1
BP0
8 Mbit
None
X
0
0
0
None
Upper 1/16
X
0
0
1
F0000H-FFFFFH
Upper 1/8
X
0
1
0
E0000H-FFFFFH
Upper 1/4
X
0
1
1
C0000H-FFFFFH
Upper 1/2
X
1
0
0
80000H-FFFFFH
All Blocks
X
1
0
1
00000H-FFFFFH
All Blocks
X
1
1
0
00000H-FFFFFH
All Blocks
X
1
1
1
00000H-FFFFFH



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