Datasheet

127
SAM7X Series [DATASHEET]
6120K–ATARM–11-Feb-14
 Assert Erase during a period of more than 220 ms
 Power-off the chip
Then it is possible to return to FFPI mode and check that Flash is erased.
20.3.4.7 AT91SAM7X512 Select EFC Command
The commands WPx, EA, xLB, xFB are executed using the current EFC controller. The default EFC controller is EFC0.
The Select EFC command (SEFC) allows selection of the current EFC controller.
20.3.4.8 Memory Write Command
This command is used to perform a write access to any memory location.
The Memory Write command (WRAM) is optimized for consecutive writes. An internal address buffer is automatically
increased.
20.3.4.9 Get Version Command
The Get Version (GVE) command retrieves the version of the FFPI interface.
Table 20-28. Select EFC Command
Step Handshake Sequence MODE[3:0] DATA[15:0]
1 Write handshaking CMDE SEFC
2 Write handshaking DATA
0 = Select EFC0
1 = Select EFC1
Table 20-29. Write Command
Read/Write DR Data
Write (Number of Words to Write) << 16 | (WRAM)
Write Address
Write Memory [address]
Write Memory [address+4]
Write Memory [address+8]
Write Memory [address+(Number of Words to Write - 1)* 4]
Table 20-30. Get Version Command
Read/Write DR Data
Write GVE
Read Version