©2011 Silicon Storage Technology, Inc.

S71327-04-000

02/11

8

32 Mbit SPI Serial Flash

SST25VF032B

Data Sheet

A Microchip Technology Company

Auto Address Increment (AAI)

The Auto Address Increment Programming-Status bit provides status on whether the device is in 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 shown 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-Protection bits

are all 0. After power-up, BP3, BP2, BP1 and BP0 are set to the defaults specified in Table 4.

Block Protection Lock-Down (BPL)

prevents any further alteration of the BPL, BP3, BP2, BP1, and BP0 bits. When the WP# pin is driven

0.

1. X = Don’t Care (RESERVED) default is “0

Protection Level

2. Default at power-up for BP2, BP1, and BP0 is ‘111’. (All Blocks Protected)

Protected Memory Address

BP3

BP2

BP1

BP0

32 Mbit

None

X

0

0

0

None

Upper 1/64

X

0

0

1

3F0000H-3FFFFFH

Upper 1/32

X

0

1

0

3E0000H-3FFFFFH

Upper 1/16

X

0

1

1

3C0000H-3FFFFFH

Upper 1/8

X

1

0

0

380000H-3FFFFFH

Upper 1/4

X

1

0

1

300000H-3FFFFFH

Upper 1/2

X

1

1

0

200000H-3FFFFFH

All Blocks

X

1

1

1

000000H-3FFFFFH

T4.0 1327