MX35LF1GE4AB-Macronix

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MX35LF1GE4ABMX35LF2GE4AB8-6. Internal ECC Status Read (For 1Gb only)Besides the Get Feature( with feature address of C0h) may collect the internal ECC status; the 7Chcommand may read out more status of internal ECC, such as 1-bit error, 2-bit error, 3-bit error, or 4-bit errorby ECCSR[3:0] which Get Feature (with C0h address) cannot distinguish it. Please refer to the "Table 6-1.The ECCSR (Internal ECC Status Register) Bits" & "Table 6-2. The Definition of Internal ECC Status"about the ECCSR definition. The ECC Status Register reports the highest bit error correction among thefour segments of a page. For example, if Segment 1 had a 1-bit error corrected, Segment 2 had no bit error,Segment 3 had a 2-bit error corrected, and Segment 4 had no bit error, then the ECC register would reportthat a 2-bit error was corrected. The register is updated after the completion of the Page Read Command (13h)The Reset Command (FFh) will clear the register to 00h.Table 6-1. The ECCSR (Internal ECC Status Register) Bitsbit 7 bit 6 bit 5 bit 4 bit 3 bit 2 bit 1 bit 0Reserved Reserved Reserved Reserved ECCSR[3] ECCSR[2] ECCSR[1] ECCSR[0]Table 6-2. The Definition of Internal ECC StatusECCSR[3:0]ECC Status0000 No bit error0001 1-bit error corrected0010 2-bit error corrected0011 3-bit error corrected0100 4-bit error corrected1111 UncorrectableEach Page has four 528-Byte ECC segments and each 528-Byte segment consists of 512 Bytes from theData Area and its associated 16 Bytes from the Spare Area.Figure 14. The Page Structure and Internal ECC Segments2112-Byte PageSegment 1512 BytesSegment 2512 BytesSegment 3512 BytesSegment 4512 BytesSegment 116 BytesSegment 216 BytesSegment 316 BytesSegment 416 Bytes2048-ByteData Area64-ByteSpare AreaOperation sequence: Command (7Ch)→Dummy Byte (xxh) →Read ECC Status RegisterP/N: PM2128 REV. 1.5, June 07, 201724
MX35LF1GE4ABMX35LF2GE4ABFigure 15. The Sequence of Internal ECC Status ReadCS#SCLK0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23Command1 dummy byteSI(7Ch)7 65 4 3 2 1 0SOHigh-ZECC Status7 6 5 4 3 2 1 0P/N: PM2128 REV. 1.5, June 07, 201725
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