PIC16C63A-04I/SO【PDF 47/184 页】IC MCU OTP 4KX14 PWM 28SOIC

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140

SAM7S Series [DATASHEET]

6175M–ATARM–26-Oct-12

All lock bits must be deactivated before using the Full Erase command. This can be done by using the CLB

command.

20.3.4.4

Flash Lock Commands

Lock bits can be set using WPL or EWPL commands. They can also be set by using the Set Lock command

(SLB). With this command, several lock bits can be activated at the same time. Bit 0 of Bit Mask corresponds to the

first lock bit and so on.

In the same way, the Clear Lock command (CLB) is used to clear lock bits. All the lock bits can also be cleared by

the EA command.

Lock bits can be read using Get Lock Bit command (GLB). When a bit set in the Bit Mask is returned, then the cor-

responding lock bit is active.

20.3.4.5

Flash General-purpose NVM Commands

General-purpose NVM bits (GP NVM) can be set with the Set GPNVM command (SGPB). Using this command,

several GP NVM bits can be activated at the same time. Bit 0 of Bit Mask corresponds to the first GPNVM bit and

so on.

In the same way, the Clear GPNVM command (CGPB) is used to clear GP NVM bits. All the general-purpose NVM

bits are also cleared by the EA command.

GP NVM bits can be read using Get GPNVM Bit command (GGPB). When a bit set in the Bit Mask is returned,

then the corresponding GPNVM bit is set.

Table 20-24. Full Erase Command

Read/Write

DR Data

Write

Table 20-25. Set and Clear Lock Bit Command

Read/Write

DR Data

Write

SLB or CLB

Write

Bit Mask

Table 20-26. Get Lock Bit Command

Read/Write

DR Data

Write

GLB

Read

Bit Mask

Table 20-27. Set and Clear General-purpose NVM Bit Command

Read/Write

DR Data

Write

SGPB or CGPB

Write

Bit Mask

Table 20-28. Get General-purpose NVM Bit Command

Read/Write

DR Data

Write

GGPB

Read

Bit Mask

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