SST26VF032B-104ISLASHSM datasheet(74/82 Pages) MICROCHIP

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SST26VF032B/SST26VF032BA

DS20005218K-page 74

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11.1

Mapping Guidance Details

The SFDP Memory Organization/Block Protection Bit

Mapping defines the memory organization including

uniform sector/block sizes and different contiguous

sectors/blocks sizes. In addition, this bit defines the

number of these uniform and different sectors/blocks

from address 000000H to the full range of Memory and

the associated Block Locking Register bits of each sec-

tor/block.

Each major Section is defined as follows:

25EH

A23:A16

07H

Section 5 Block Protection Bit Start

((2m) +1)+ c, c = 07H or 7, m = 6 for 32 Mbits

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.

25FH

A31:A24

0EH

Section 5 (Top) Block Protection Bit End

(((2m) +1)+ c, c = 0EH or 14, m = 6 for 32 Mbits,

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.

Note 1: See Section 11.1 “Mapping Guidance Details” for more detailed mapping information

TABLE 11-1:

SERIAL FLASH DISCOVERABLE PARAMETER (SFDP) (CONTINUED)

Address

Bit Address

Data

Comments

TABLE 11-2:

SECTION DEFINITION

Major Section X

Section X: Sector Type Number

Section X: Number of Sectors

Section X: Block Protection Register Bit Start Location

Section X: Block Protection Register Bit End Location

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