Uniform Sector

Standard and Dual Serial Flash

GD25WD80C

10

6. STATUS REGISTER

S7

S6

S5

S4

S3

S2

S1

S0

SRP

Reserved

Reserved

BP2

BP1

BP0

WEL

WIP

The status and control bits of the Status Register are as follows:

WIP bit.

The Write In Progress (WIP) bit indicates whether the memory is busy in program/erase/write status register progress.

When WIP bit is set to 1, it means the device is busy in program/erase/write status register progress. when WIP bit is cleared

to 0, it means the device is not in program/erase/write status register progress. The default value of WIP is 0.

WEL bit.

The Write Enable Latch (WEL) bit indicates the status of the internal Write Enable Latch. When set to 1 the internal

Write Enable Latch is set, when set to 0 the internal Write Enable Latch is reset and no Write Status Register, Program or

Erase command is accepted. The default value of WEL is 0.

BP2, BP1, BP0 bits.

The Block Protect (BP2, BP1, BP0) bits are non-volatile. They define the size of the area to be software protected

against Program and Erase commands. These bits are written with the Write Status Register (WRSR) command. When the

Block Protect (BP2, BP1, BP0) bits are set to 1, the relevant memory area (as defined in Table1).becomes protected against

Page Program (PP), Sector Erase (SE) and Block Erase (BE) commands. The Block Protect (BP2, BP1, BP0) bits can be

written provided that the Hardware Protected mode has not been set. The Chip Erase (CE) command is executed, if the

Block Protect (BP2, BP1, BP0) bits are all 0. The default value of BP2:0 are 0s.

SRP bit

The Status Register Protect (SRP) bit operates in conjunction with the Write Protect (WP#) signal. The Status Register

Write Protect (SRP) bit and Write Protect (WP#) signal set the device to the Hardware Protected mode. When the Status

Register Protect (SRP) bit is set to 1, and Write Protect (WP#) is driven Low. In this mode, the non-volatile bits of the Status

Register(SRP, BP2, BP1, BP0) become read-only bits and the Write Status Register (WRSR) instruction is not execution.

The default value of SRP is 0.