S29GL01GS datasheet(38/106 Pages) SPANSION

38 / 106 page

GL-S MirrorBit® Family

S29GL_128S_01GS_00_08 October 9, 2013

Da ta

Sh e e t

 Program Suspended (bit 2),

The current state bits indicate whether an EA is in process, suspended, or completed.

The upper 8 bits (bits 15:8) are reserved. These have undefined High or Low value that can change from one

status read to another. These bits should be treated as don't care and ignored by any software reading status.

The Soft Reset Command will clear to 0 bits [5, 4, 1, 0] of the status register if Status Register bit 3 =0. It will

not affect the current state bits. The Clear Status Register Command will clear to 0 the results related bits of

the status register but will not affect the current state bits.

Notes:

1. Bits 15 thru 8, and 0 are reserved for future use and may display as 0 or 1. These bits should be ignored (masked) when checking status.

2. Bit 7 is 1 when there is no Embedded Algorithm in progress in the device.

3. Bits 6 thru 1 are valid only if Bit 7 is 1.

4. All bits are put in their reset status by cold reset or warm reset.

5. Bits 5, 4, 3, and 1 are cleared to 0 by the Clear Status Register command or Reset command.

6. Upon issuing the Erase Suspend Command, the user must continue to read status until DRB becomes 1.

7. ESSB is cleared to 0 by the Erase Resume Command.

8. ESB reflects success or failure of the most recent erase operation.

9. PSB reflects success or failure of the most recent program operation.

10. During erase suspend, programming to the suspended sector, will cause program failure and set the Program status bit to 1.

11. Upon issuing the Program Suspend Command, the user must continue to read status until DRB becomes 1.

12. PSSB is cleared to 0 by the Program Resume Command.

13. SLSB indicates that a program or erase operation failed because the sector was locked.

14. SLSB reflects the status of the most recent program or erase operation.

5.4.2

Data Polling Status

During an active Embedded Algorithm the EAC switches to the Data Polling ASO to display EA status to any

read access. A single word of status information is aliased in all locations of the device address space. In the

status word there are several bits to determine the status of an EA. These are referred to as DQ bits as they

appear on the data bus during a read access while an EA is in progress. DQ bits 15 to 8, DQ4, and DQ0 are

reserved and provide undefined data. Status monitoring software must mask the reserved bits and treat them

as don't care. Table 5.3 on page 42 and the following subsections describe the functions of the remaining

bits.

Table 5.2 Status Register

Bit #

15:8

76543210

Bit

Description

Reserved

Device

Ready Bit

Erase

Suspend

Status Bit

Erase

Status Bit

Program

Status Bit

Write Buffer

Abort

Status Bit

Program

Suspend

Status Bit

Sector Lock

Status Bit

Reserved

Bit Name

DRB

ESSB

ESB

PSB

WBASB

PSSB

SLSB

Reset

Status

10000000

Busy Status

Invalid

Ready

Status

0=No Erase

Suspension

1=Erase in

Suspension

0=Erase

successful

1=Erase fail

0=Program

successful

1=Program

fail

0=Program

not aborted

1=Program

aborted

during

Write to

Buffer

command

0=No

Program in

suspension

1=Program

suspension

0=Sector

not locked

during

operation

1=Sector

locked error

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