SAM3N00A Atmel Corporation, SAM3N00A Datasheet - Page 300
SAM3N00A
Manufacturer Part Number
SAM3N00A
Description
Manufacturer
Atmel Corporation
- Current page: 300 of 752
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19.2.5.5
300
SAM3N
Flash General-purpose NVM Commands
In the same way, the Clear Lock command (CLB) is used to clear lock bits.
Table 19-11. Set and Clear Lock Bit Command
Lock bits can be read using Get Lock Bit command (GLB). The n
n of the bit mask is set..
Table 19-12. Get Lock Bit Command
General-purpose NVM bits (GP NVM bits) can be set using the Set GPNVM command (SGPB).
This command also activates GP NVM bits. A bit mask is provided as argument to the com-
mand. When bit 0 of the bit mask is set, then the first GP NVM bit is activated.
In the same way, the Clear GPNVM command (CGPB) is used to clear general-purpose NVM
bits. The general-purpose NVM bit is deactivated when the corresponding bit in the pattern value
is set to 1.
Table 19-13. Set/Clear GP NVM Command
General-purpose NVM bits can be read using the Get GPNVM Bit command (GGPB). The n
GP NVM bit is active when bit n of the bit mask is set..
Table 19-14. Get GP NVM Bit Command
Step
1
2
Step
1
2
Step
1
2
Step
1
2
Handshake Sequence
Write handshaking
Write handshaking
Handshake Sequence
Write handshaking
Read handshaking
Handshake Sequence
Write handshaking
Write handshaking
Handshake Sequence
Write handshaking
Read handshaking
MODE[3:0]
CMDE
DATA
MODE[3:0]
CMDE
DATA
MODE[3:0]
CMDE
DATA
MODE[3:0]
CMDE
DATA
DATA[15:0] or DATA[7:0]
SLB or CLB
Bit Mask
DATA[15:0] or DATA[7:0]
GLB
Lock Bit Mask Status
0 = Lock bit is cleared
1 = Lock bit is set
DATA[15:0] or DATA[7:0]
SGPB or CGPB
GP NVM bit pattern value
DATA[15:0] or DATA[7:0]
GGPB
GP NVM Bit Mask Status
0 = GP NVM bit is cleared
1 = GP NVM bit is set
th
lock bit is active when the bit
11011A–ATARM–04-Oct-10
th
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