S25FS256S datasheet(141/154 Pages) SPANSION

141 / 154 page

November 6, 2013 S25FS-S_00_04

S25FS-S Family

141

Da ta

Shee t

(Prelim i nar y )

Table 12.14 Password Register (PASS)

Bits

Field

Name

Function

Type

Default State

Description

63 to 0

PWD

Hidden

Password

OTP

FFFFFFFF-

FFFFFFFFh

Non-Volatile OTP storage of 64-bit password. The password is

no longer readable after the password protection mode is

selected by programming ASP register bit 2 to 0.

Table 12.15 PPB Lock Register (PPBL)

Bits

Field Name

Function

Type

Default State

Description

7 to 1

RFU

Reserved

Volatile

00h

Reserved for Future Use

PPBLOCK

Protect PPB Array

Volatile

Read

Only

ASPR[2:1] = 1xb = Persistent

Protection Mode = 1

ASPR[2:1] = 01b = Password

Protection Mode = 0

0 = PPB array protected.

1 = PPB array may be programmed or erased.

Table 12.16 PPB Access Register (PPBAR)

Bits

Field Name

Function

Type

Default State

Description

7 to 0

PPB

Read or Program

per sector PPB

Non-Volatile

FFh

00h = PPB for the sector addressed by the PPBRD or

PPBP command is programmed to 0, protecting that

sector from program or erase operations.

FFh = PPB for the sector addressed by the PPBRD

command is 1, not protecting that sector from program

or erase operations.

Table 12.17 DYB Access Register (DYBAR)

Bits

Field Name

Function

Type

Default State

Description

7 to 0

DYB

Read or Write

per sector DYB

Volatile

FFh

00h = DYB for the sector addressed by the DYBRD or DYBWR

command is cleared to 0, protecting that sector from program or

erase operations.

FFh = DYB for the sector addressed by the DYBRD or DYBWR

command is set to 1, not protecting that sector from program or

erase operations.

Table 12.18 Non-Volatile Data Learning Register (NVDLR)

Bits

Field Name

Function

Type

Default State

Description

7 to 0

NVDLP

Non-Volatile

Data Learning

Pattern

OTP

00h

OTP value that may be transferred to the host during DDR read

command latency (dummy) cycles to provide a training pattern to

help the host more accurately center the data capture point in the

received data bits.

Table 12.19 Volatile Data Learning Register (VDLR)

Bits

Field Name

Function

Type

Default State

Description

7 to 0

VDLP

Volatile Data

Learning

Pattern

Volatile

Takes the

value of

NVDLR

during POR

or Reset

Volatile copy of the NVDLP used to enable and deliver the Data

Learning Pattern (DLP) to the outputs. The VDLP may be changed

by the host during system operation.

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