XC2000 datasheet(106/647 Pages) INFINEON

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XC2000 Derivatives

System Units (Vol. 1 of 2)

Memory Organization

Preliminary

User’s Manual

3-44

V1.0, 2007-06

MemoryX2K, V1.1

Figure 3-8

Layout of Security Pages

Generally the 16-bit words are stored as always in the XC2000 in little endian format.

•

The PWx words contain the passwords.

•

The double bit RPRO is stored as in the related ISFR IMB_FSR_PROT in the bits 15

and 14. The other bits of this word are unused and should be kept all-zero.

•

The PROCON data is stored as defined in the IMB_PROCONx (x=0-2) ISFR.

•

The lock code consists of the two words CL and CH. Both contain “AA55H” to form

the correct lock code.

All bytes of the used blocks of the security pages (block 0 and 1 of SecP0 and block 0 of

SecP1) are to be considered as “reserved” and must be kept erased, i.e. with all-zero

content. The unused blocks of the security pages (blocks 2 to 7 of SecP0 and blocks 1

to 7 of SecP1) shall be programmed with all-one data.

RPRO

FF'0080

Lock Code

(2 Words)

Security Page 1

flash_security_page_layout.vsd

FF'0010

Security Page 0

FF'0000

4 Pass-

Words

PW0

PW1

PW2

PW3

3 PROCON

Words

FF'0008

FF'0020

unused

FF'0090

FF'00FF

FF'007F

unused

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