S29GL01GS datasheet(50/108 Pages) CYPRESS

50 / 108 page

Document Number: 001-98285 Rev. *R

Page 50 of 108

S29GL01GS/S29GL512S

S29GL256S/S29GL128S

Table 5.21 Secure Silicon Sector Program State Command Transition

Current State

Command and

Condition

Read

Software Reset /

ASO Exit

Status Register

Read Enter

Status Register

Clear

Unlock 1

Command Set

Exit

Address

x555h

Data

xF0h

x70h

x71h

xAAh

x00h

SSRPG1

–

SSRPG1

––

SSRPG1

––

SSR_WB

WC > 256 or SA

 SA

SSR_WB

–––

–

 256 and

SA = SA

SSR_WB_D

WC < 0 or Write

Buffer

 Write

Buffer

SSR_WB_D

–––

–

WC > 0 and Write

Buffer = Write

Buffer

SSRPG

SR(7) = 0

SSRPG

–

SSRSR

(SSRPG)

–

SR(7) = 1

SSR

SR(7) = 1 and

DQ(1) = 0

READ

DQ(1) = 1

––

SSRUL1

SR(3) = 1

SSRSR

–

(return)

–––

–

SSREXT

–

SSREXT

–

SSRSR (SSR)

––

READ

Table 5.22 Password Protection Command State Transition

Current

State

Command

and

Condition

Read

Software

Reset /

ASO Exit

Status

Read

Enter

Status

Clear

Password

ASO

Unlock

Enter

Password

ASO

Unlock

Start

Command

Set Exit

Entry

Command

Set Exit

Program

Entry

Password

Word

Count

Address

x555h

Data

xF0h

x70h

x71h

x25h

x29h

x90h

x00h

xA0h

x03h

–

READ

PPSR (PP)

PPWB25

–

PPEXT

–

PPPG1

–

PPWB25

–

PPWB25

––––––––

PPD

WC > 0

PPD

––––

–

––––

 0

PPPG

PPPG1

–

PPPG1

–––––––––

PPPG

–

PPPG

–

PPSR

(PPPG)

–––––––

PPSR

–

(return)

–––––––––

PPEXT

–

PPEXT

––––––

READ

––

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