SST26VF016B-104VSLASHSN datasheet(9/84 Pages) MICROCHIP

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DS20005262G-page 9

SST26VF016B

4.5

STATUS Register

The STATUS register is a read-only register that pro-

vides the following status information: whether the

Flash memory array is available for any Read or Write

operation, if the device is write-enabled, whether an

erase or program operation is suspended and if the

Block Protection register and/or Security ID are locked

down. During an internal Erase or Program operation,

the STATUS register may be read to determine the

completion of an operation in progress. Table 4-2

describes the function of each bit in the STATUS regis-

ter.

TABLE 4-2:

STATUS REGISTER

Bit

Name

Function

Default at

Power-up

Read/Write

(R/W)

BUSY

Write operation status

1 = Internal Write operation is in progress

0 = No internal Write operation is in progress

WEL

Write Enable Latch status

1 = Device is write-enabled

0 = Device is not write-enabled

WSE

Write Suspend Erase status

1 = Erase suspended

0 = Erase is not suspended

WSP

Write Suspend Program status

1 = Program suspended

0 = Program is not suspended

WPLD

Write Protection Lock-Down status

1 = Write Protection Lock-Down enabled

0 = Write Protection Lock-Down disabled

SEC(1)

Security ID status

1 = Security ID space locked

0 = Security ID space not locked

0(1)

RES

Reserved for future use

BUSY

Write operation status

1 = Internal Write operation is in progress

0 = No internal Write operation is in progress

Note 1: The Security ID status will always be ‘1’ at power-up after a successful execution of the Lockout Security

ID instruction, otherwise default at power-up is ‘0’.

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