SST26WF040BA datasheet(74/96 Pages) MICROCHIP

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SST26WF040B/040BA SST26WF080B/080BA

DS20005283C-page 74

 2014-2017 Microchip Technology Inc.

Memory Organization/Block Protection Bit Mapping 1

24CH

A7:A0

02H

Section 1: Sector Type Number:

Sector type in JEDEC Parameter Table (bottom, 8 KByte)

24DH

A15:A8

02H

Section 1 Number of Sectors

Four of 8KB blocks (2n)

24EH

A23:A16

FFH

Section 1 Block Protection Bit Start

((2m) +1)+ c, c=FFH or -1, m= 3 for 4 Mb

Address bits are Read Lock bit locations and Even Address bits are

Write Lock bit locations. The most significant (left-most) bit indicates

the sign of the integer; it is sometimes called the sign bit. If the sign bit

is zero, then the number is greater than or equal to zero, or positive. If

the sign bit is one then the number is less than zero or negative.

24FH

A31:A24

06H

Section 1 (bottom) Block Protection Bit End

((2m) +1)+ c, c=06H or 6, m= 3 for 4 Mb

Address bits are Read Lock bit locations and Even Address bits are

Write Lock bit locations. The most significant (left-most) bit indicates

the sign of the integer; it is sometimes called the sign bit. If the sign bit

is zero, then the number is greater than or equal to zero, or positive. If

the sign bit is one then the number is less than zero or negative.

250H

A7:A0

03H

Section 2: Sector Type Number

Sector type in JEDEC Parameter Table (32 KByte Block)

251H

A15:A8

00H

Section 2 Number of Sectors

One of 32 KByte Block (2n, n=0)

252H

A23:A16

FDH

Section 2 Block Protection Bit Start

((2m) +1)+ c, c=FDH or -3, m= 3 for 4 Mb

The most significant (left-most) bit indicates the sign of the integer; it is

sometimes called the sign bit. If the sign bit is zero, then the number is

greater than or equal to zero, or positive. If the sign bit is one then the

number is less than zero or negative.

253H

A31:A24

FDH

Section 2 Block Protection Bit End

((2m) +1)+ c, c=FDH or -3, m= 3 for 4 Mb

The most significant (left-most) bit indicates the sign of the integer; it is

sometimes called the sign bit. If the sign bit is zero, then the number is

greater than or equal to zero, or positive. If the sign bit is one then the

number is less than zero or negative.

254H

A7:A0

04H

Section 3: Sector Type Number

Sector type in JEDEC Parameter Table (64 KByte Block)

255H

A15:A8

03H

Section 3 Number of Sectors

Thirty of 64 KByte Block (2n-2, n= 3)

256H

A23:A16

00H

Section 3 Block Protection Bit Start

Section 3 Block Protection Bit starts at 00H

257H

A31:A24

FCH

Section 3 Block Protection Bit End

((2m) +1)+ c, c=FCH or -4, m= 3 for 4 Mb

258H

A7:A0

03H

Section 4: Sector Type Number

Sector type in JEDEC Parameter Table (32 KByte Block)

259H

A15:A8

00H

Section 4 Number of Sectors

One of 32KByte Block (2n, n=0)

TABLE 11-1:

SERIAL FLASH DISCOVERABLE PARAMETER (SFDP) SST26WF040B/040BA

(CONTINUED) (15 OF 16)

Address

Bit Address

Data

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