SAM9G35_14 Datasheet, PDF (427/1293 Pages) ATMEL Corporation – ARM-based Embedded MPU

29.16.6 SMC Write Protect Mode Register
Name:
SMC_WPMR
Address: 0xFFFFEAE4
Access:
Read-write
Reset:
See Table 29-8
31
30
29
28
27
26
25
24
WPKEY
23
22
21
20
19
18
17
16
WPKEY
15
14
13
12
11
10
9
8
WPKEY
7
6
5
4
3
2
1
0
—
—
—
—
—
—
—
WPEN
• WPEN: Write Protect Enable
0 = Disables the Write Protect if WPKEY corresponds to 0x534D43 (“SMC” in ASCII).
1 = Enables the Write Protect if WPKEY corresponds to 0x534D43 (“SMC” in ASCII).
Protects the registers listed below:
• Section 29.16.1 ”SMC Setup Register”
• Section 29.16.2 ”SMC Pulse Register”
• Section 29.16.3 ”SMC Cycle Register”
• Section 29.16.4 ”SMC MODE Register”
• Section 29.16.5 ”SMC DELAY I/O Register”
• WPKEY: Write Protect KEY
Should be written at value 0x534D43 (“SMC” in ASCII). Writing any other value in this field aborts the write operation of the
WPEN bit. Always reads as 0.
SAM9G35 [DATASHEET]
11053E–ATARM–10-Mar-2014
427