S29GL01GS datasheet(13/118 Pages) INFINEON

13 / 118 page

Datasheet

001-98285 Rev. *T

2023-07-17

128 Mb/256 Mb/512 Mb/1 Gb GL-S MIRRORBIT™ Flash

Parallel, 3.0 V

Address space maps

2.7.5

Dynamic protection bits (DYB) ASO

The DYB ASO contains one bit of a volatile memory array for each Sector in the device. When the DYB ASO is

entered, the DYB bit for a sector appears in the Least Significant Bit (LSB) of each address in the sector. See

Figure 28 for ASO entry timing requirements. Reading any address in a sector displays data where the LSB

indicates the non-volatile protection status for that sector. However, it is recommended to read, set, or clear the

DYB only at address 0 of the sector for future compatibility. If the bit is ‘0’, the sector is protected against

programming and erase operations. If the bit is ‘1’, the sector is not protected by the DYB. The sector may be

protected by other features of ASP.

2.8

ECC status ASO

The system can access the ECC status ASO by issuing the ECC status entry command sequence during read mode.

The ECC status ASO provides the status of a single bit error correction when reading the selected page.

“Automatic ECC” on page 23 describes the ECC function in more detail. See Figure 28 for ASO Entry timing

requirements.

The ECC Status ASO allows the following activities:

• Read ECC Status for the selected page.

•ASO exit.

2.8.1

ECC status

The contents of the ECC Status ASO indicates, for the selected ECC page, whether ECC protection has corrected

an error in the eight-bit error correction code or the 16 Words of data in the ECC page. The address specified in

the ECC Status Read Command, provided in Table 41 selects the ECC Page.

Table 9

ECC status word – upper byte

Bit

1514

1211

Name

RFU

Value

XXXX

XXX

Table 10

ECC status word – lower byte

Bit

76543

Name

RFU RFU RFU RFU RFU Single bit error corrected in

the 8-bit error correction

code

Single bit error corrected in

16 words of data

RFU

Value

XXXXX

0 = No error corrected

1 = Single bit error corrected

0 = No error corrected

1 = Single bit error corrected

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