Address mapping

TN0897

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Doc ID 023176 Rev 2

The register width of the ROM area is 8 bit. For products with 16 or 24 bit register width, the

eight most significant bits of the memory cell are used.

All unused ROM addresses are read as ‘0’.

Table 9.

ROM address range

ROM

Address

Device Information

Access

3FH

1.

ROM address 3FH is unused. An attempt to access this address is recognized as a SDI failure (short to

3EH

<SPI frame ID>

R

04H to 3DH

Product specific

See product datasheet

R

03H

<product code 2>

R

02H

<product code 1>

R

01H

<silicon version>

R

00H

<ID Header>

R