Datasheet

• before access to any page other than the current one
•
when a new command is validated (MODE = CMDE)
The Write Page command (WP) is optimized for consecutive writes. Write handshaking can be chained; an internal
address buffer is automatically increased.
Table 18-7. Write Command
Step Handshake Sequence MODE[3:0] DATA[15:0]
1 Write handshaking CMDE WP or WPL or EWP or EWPL
2 Write handshaking ADDR0 Memory Address LSB
3 Write handshaking ADDR1 Memory Address
4 Write handshaking DATA *Memory Address++
5 Write handshaking DATA *Memory Address++
... ... ... ...
n Write handshaking ADDR0 Memory Address LSB
n+1 Write handshaking ADDR1 Memory Address
n+2 Write handshaking DATA *Memory Address++
n+3 Write handshaking DATA *Memory Address++
... ... ... ...
The Flash command Write Page and Lock (WPL) is equivalent to the Flash Write Command. However, the lock bit is
automatically set at the end of the Flash write operation. As a lock region is composed of several pages, the
programmer writes to the first pages of the lock region using Flash write commands and writes to the last page of the
lock region using a Flash write and lock command.
The Flash command Erase Page and W
rite (EWP) is equivalent to the Flash Write Command. However, before
programming the load buffer, the page is erased.
The Flash command Erase Page and Write the Lock (EWPL) combines EWP and WPL commands.
18.3.5.3 Flash Full Erase Command
This command is used to erase the Flash memory planes.
All lock regions must be unlocked before the Full Erase command by using the CLB command. Otherwise, the erase
command is aborted and no page is erased.
T
able 18-8. Full Erase Command
Step Handshake Sequence MODE[3:0] DATA[15:0]
1 Write handshaking CMDE EA
2 Write handshaking DATA 0
18.3.5.4 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. A Bit Mask is provided as argument to the command. When
bit 0 of the bit mask is set, then the first lock bit is activated.
In the same way
, the Clear Lock command (CLB) is used to clear lock bits.
Table 18-9. Set and Clear Lock Bit Command
Step Handshake Sequence MODE[3:0] DATA[15:0]
1 Write handshaking CMDE SLB or CLB
SAM E70/S70/V70/V71 Family
Fast Flash Programming Interface (FFPI)
© 2019 Microchip T
echnology Inc.
Datasheet
DS60001527D-page 88