16 Mbit SPI Serial Flash
SST25VF016B
A Microchip Technology Company
Data Sheet
Auto Address Increment (AAI)
The Auto Address Increment Programming-Status bit provides status on whether the device is in Auto
Address Increment (AAI) programming mode or Byte-Program mode. The default at power up is Byte-
Program mode.
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, to be software protected against any memory Write (Program 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-Protec-
tion bits are all 0. After power-up, BP3, BP2, BP1 and BP0 are set to 1.
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: Software Status Register Block Protection for SST25VF016B1
Status Register Bit2
Protected Memory Address
16 Mbit
Protection Level
None
BP3
X
BP2
0
BP1
0
BP0
0
None
Upper 1/32
Upper 1/16
Upper 1/8
Upper 1/4
Upper 1/2
All Blocks
All Blocks
X
0
0
1
1F0000H-1FFFFFH
1E0000H-1FFFFFH
1C0000H-1FFFFFH
180000H-1FFFFFH
100000H-1FFFFFH
000000H-1FFFFFH
000000H-1FFFFFH
X
0
1
0
X
0
1
1
X
1
0
0
X
1
0
1
X
1
1
0
X
1
1
1
T4.0 25044
1. X = Don’t Care (RESERVED) default is “0
2. Default at power-up for BP2, BP1, and BP0 is ‘111’. (All Blocks Protected)
©2011 Silicon Storage Technology, Inc.
DS25044A
08/11
8
SST [ SILICON STORAGE TECHNOLOGY, INC ]
