S25FL032P datasheet(13/60 Pages) CYPRESS

13 / 60 page

Document Number: 002-00650 Rev. *L

Page 13 of 60

S25FL032P

Note

(Default) indicates the value of each Configuration Register bit set upon initial factory shipment.

7.9

Data Protection Modes

Cypress SPI Flash memory devices provide the following data protection methods:

 The Write Enable (WREN) command: Must be written prior to any command that modifies data. The WREN command sets the

Write Enable Latch (WEL) bit. The WEL bit resets (disables writes) on power-up or after the device completes the following

commands:

– Page Program (PP)

– Sector Erase (SE)

– Bulk Erase (BE)

– Write Disable (WRDI)

– Write Register (WRR)

– Parameter 4 KB Sector Erase (P4E)

– Parameter 8 KB Sector Erase (P8E)

– Quad Page Programming (QPP)

– OTP Byte Programming (OTPP)

 Software Protected Mode (SPM): The Block Protect (BP2, BP1, BP0) bits define the section of the memory array that can be

read but not programmed or erased. Table 6 and Table 7 shows the sizes and address ranges of protected areas that are defined

by Status Register bits BP2:BP0.

 Hardware Protected Mode (HPM): The Write Protect (W#/ACC) input and the Status Register Write Disable (SRWD) bit together

provide write protection.

 Clock Pulse Count: The device verifies that all program, erase, and Write Register commands consist of a clock pulse count that

is a multiple of eight before executing them.

Table 5. Configuration Register Table

Bit

Bit Name

Bit Function

Description

7NA



Not Used

6NA



Not Used

5TBPROT

Configures start of block protection

1 = Bottom Array (low address)

0 = Top Array (high address) (Default)

4NA



Do not use

BPNV

Configures BP2-0 bits in the Status Register

1 = Volatile

0 = Nonvolatile (Default)

2TBPARM

Configures Parameter sector location

1 = Top Array (high address)

0 = Bottom Array (low address) (Default)

1QUAD

Puts the device into Quad I/O mode

1 = Quad I/O

0 = Dual or Serial I/O (Default)

FREEZE

Locks BP2-0 bits in the Status Register

1 = Enabled

0 = Disabled (Default)

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