©2010 Silicon Storage Technology, Inc.

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1.8V Serial Quad I/O (SQI) Flash Memory

SST26WF032

Advance Information

Status Register

The Status register is a read-only register that provides status on whether the flash memory array is

available for any Read or Write operation, whether the device is Write enabled, and whether an erase

or program operation is suspended. During an internal Erase or Program operation, the Status register

may be read to determine the completion of an operation in progress. Table 2 describes the function of

each bit in the Status register.

Table 2: Status Register

Bit

Name

Function

Default at

Power-up

0

RES

Reserved for future use

0

1

WEL

Write-Enable Latch status

1 = Device is memory Write enabled

0 = Device is not memory Write enabled

0

2

WSE

Write Suspend-Erase status

1 = Erase suspended

0 = Erase is not suspended

0

3

WSP

Write Suspend-Program status

1 = Program suspended

0 = Program is not suspended

0

4

WPLD

Write Protection Lock-Down status

1 = Write Protection Lock-Down enabled

0 = Write Protection Lock-Down disabled

0

1. The Security ID status will always be ‘1’ at power-up after a successful execution of the Lockout Sec ID instruction, oth-

erwise default at power-up is ‘0’.

Security ID status

1 = Security ID space locked

0 = Security ID space not locked

01

6

RES

Reserved for future use

0

7

BUSY

Write operation status

1 = Internal Write operation is in progress

0 = No internal Write operation is in progress

0

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