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ADuC7060
FEEDAT Register
FEEDAT is a 16-bit data register. This register holds the data
value for flash read and write commands.
FEEHIDE Register
FEEHIDE MMR provides immediate protection. It does not
require any software key. Note that the protection settings in
FEEHIDE are cleared by a reset (see Table 15).
Name:
FEEDAT
Name:
FEEHIDE
Address:
0xFFFF0E0C
Address:
0xFFFF0E20
Default value:
0xXXXX
Default value:
0xFFFFFFFF
Access:
Read and write
Access:
Read and write
FEEADR Register
Table 15. FEEPRO and FEEHIDE MMR Bit Designations
FEEADR is a 16-bit address register used for accessing
individual pages of the 32 kB flash block. The valid address
range for a user is: 0x0000 to 0x77FF. This represents the 30 kB
flash user memory space. A read or write access outside this
boundary causes a data abort exception to occur.
Bit
31
Description
Read protection.
Cleared by user to protect all code. No JTAG read
accesses for protected pages if this bit is set.
Set by the user to allow reading the code via JTAG.
Name:
Address:
Default value:
Access:
FEEADR
0xFFFF0E10
0x0000
Read and write
30
29
28:0
Protection for Page 59 (0x00087600 to 0x000877FF).
Set by user to allow writing to Page 59. Cleared to
protect Page 59.
Protection for Page 58 (0x00087400 to 0x000875FF).
Set by the user to allow writing to Page 58. Cleared to
protect Page 58.
Write protection for Page 57 to Page 0. Each bit
represents two pages. Each page is 512 bytes in size.
FEESIGN Register
The FEESIGN register is a 24-bit MMR. This register is updated
with the 24-bit signature value after the signature command has
been executed. This value is the result of the linear feedback
shift register (LFSR ) operation initiated by the signature
command.
Bit 0 is protection for Page 0 and Page 1 (0x00080000
to 0x000803FF). Set by the user to allow writing Page 0
and Page 1. Cleared to protect Page 0 and Page 1.
Bit 1 is protection for Page 2 and Page 3 (0x00080400
to 0x000807FF. Set by the user to allow writing Page 2
and Page 3. Cleared to protect Page 2 and Page 3.
…
…
Name:
Address:
Default value:
Access:
FEESIGN
0xFFFF0E18
0xFFFFFF
Read
Bit 27 is protection for Page 54 and Page 55
(0x00087000 to 0x000873FF). Set by the user to allow
writing to Page 54 and Page 55. Cleared to protect
Page 54 and Page 55.
Bit 28 is protection for Page 56 and Page 57
(0x00087400 to 0x000877FF). Set by the user to allow
writing to Page 56 and Page 57. Cleared to protect
Page 56 and Page 57.
FEEPRO Register
Command Sequence for Executing a Mass Erase
FEEPRO MMR provides protection following a subsequent
FEEDAT
FEEADR
=
=
0x3CFF;
0x77C3;
reset of the MMR. It requires a software key (see Table 15).
FEEMOD
FEECON
=
=
FEEMOD|0x8;
0x06;
//Erase key enable
//Mass erase command
Name:
Address:
Default value:
Access:
FEEPRO
0xFFFF0E1C
0x00000000
Read and write
Rev. 0 | Page 22 of 100
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