MX66L51235FMI-10G datasheet(67/83 Pages) MCNIX

67 / 83 page

MX66L51235F

Rev. 1.1, August 02, 2016

P/N: PM1832

bit7

bit6

bit5

bit4

bit3

bit2

bit1

bit0

WPSEL

E_FAIL

P_FAIL

Reserved

ESB

(Erase

Suspend bit)

PSB

(Program

Suspend bit)

LDSO

(indicate if

lock-down)

Secured OTP

indicator bit

0=Block Lock

(BP) protection

mode

1=Advanced

Sector protection

mode

(default=0)

0=normal

Erase

succeed

1=indicate

Erase failed

(default=0)

0=normal

Program

succeed

1=indicate

Program

failed

(default=0)

0=Erase

is not

suspended

1= Erase

suspended

(default=0)

0=Program

is not

suspended

1= Program

suspended

(default=0)

0 = not lock-

down

1 = lock-down

(cannot

program/

erase

OTP)

0 = non-

factory

lock

1 = factory

lock

Non-volatile bit

(OTP)

Volatile bit

Volatile bit Volatile bit Volatile bit

Volatile bit

Non-volatile

bit

(OTP)

Non-volatile

bit (OTP)

Security Register

The definition of the Security Register bits is as below:

Write Protection Selection bit. Please reference to "9-33. Write Protection Selection (WPSEL)".

Erase Fail bit. The Erase Fail bit is a status flag, which shows the status of last Erase operation. It will be set to "1",

if the erase operation fails. It will be set to "0", if the last operation is successful. Please note that it will not interrupt

or stop any operation in the flash memory.

Program Fail bit. The Program Fail bit is a status flag, which shows the status of last Program operation. It will be

set to "1", if the program operation fails or the program region is protected. It will be set to "0", if the last operation is

successful. Please note that it will not interrupt or stop any operation in the flash memory.

Erase Suspend bit. Erase Suspend Bit (ESB) indicates the status of Erase Suspend operation. Users may use

ESB to identify the state of flash memory. After the flash memory is suspended by Erase Suspend command, ESB

is set to "1". ESB is cleared to "0" after erase operation resumes.

Program Suspend bit. Program Suspend Bit (PSB) indicates the status of Program Suspend operation. Users may

use PSB to identify the state of flash memory. After the flash memory is suspended by Program Suspend command,

PSB is set to "1". PSB is cleared to "0" after program operation resumes.

Secured OTP Indicator bit. The Secured OTP indicator bit shows the Secured OTP area is locked by factory or

not. When it is "0", it indicates non-factory lock; "1" indicates factory-lock.

Lock-down Secured OTP (LDSO) bit. By writing WRSCUR instruction, the LDSO bit may be set to "1" for

customer lock-down purpose. However, once the bit is set to "1" (lock-down), the LDSO bit and the 4K-bit Secured

OTP area cannot be updated any more. While it is in 4K-bit secured OTP mode, main array access is not allowed.

Table 9. Security Register Definition

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