AT91SAM7S32-AI ATMEL [ATMEL Corporation], AT91SAM7S32-AI Datasheet - Page 116

• Manufacturer Part Number: AT91SAM7S32-AI
• Description: AT91 ARM Thumb-based Microcontrollers
• Manufacturer: ATMEL [ATMEL Corporation]

Flash General-
purpose NVM
Commands
Flash Security Bit
Command
Get Version Command
116
AT91SAM7S32 Preliminary
Table 38. Set and Clear Lock Bit Command
Lock bits can be read using Get Lock Bit command (GLB). When a bit set in the Bit Mask is
returned, then the corresponding lock bit is active.
Table 39. Get Lock Bit Command
General-purpose NVM bits (GP NVM) can be set with the Set Fuse command (SFB). Using
this command, several GP NVM bits can be activated at the same time. Bit 0 of Bit Mask cor-
responds to the first fuse bit and so on.
In the same way, the Clear Fuse command (CFB) is used to clear GP NVM bits. All the gen-
eral-purpose NVM bits are also cleared by the EA command.
Table 40. Set and Clear General-purpose NVM Bit Command
GP NVM bits can be read using Get Fuse Bit command (GFB). When a bit set in the Bit Mask
is returned, then the corresponding fuse bit is set.
Table 41. Get General-purpose NVM Bit Command
Security bits can be set using Set Security Bit command (SSE). Once the security bit is
active, the Fast Flash programming is disabled. No other command can be run. Only an event
on the Erase pin can erase the security bit once the contents of the Flash have been erased.
Table 42. Set Security Bit Command
The Get Version (GVE) command retrieves the version of the FFPI interface.
Table 43. Get Version Command
Read/Write
Write
Write
Read/Write
Write
Read
Read/Write
Write
Write
Read/Write
Write
Read
Read/Write
Write
Read/Write
Write
Read
DR Data
SLB or CLB
DR Data
GLB
Bit Mask
DR Data
SFB or CFB
Bit Mask
DR Data
GFB
Bit Mask
DR Data
DR Data
GVE
Bit Mask
SSE
Version
6071A–ATARM–28-Oct-04