afs600 Actel Corporation, afs600 Datasheet - Page 58

• Manufacturer Part Number: afs600
• Description: Actel Fusion Programmable System Chips Mixed-signal Family With Optional Arm Support
• Manufacturer: Actel Corporation

Erase Page Operation
The Erase Page operation is initiated when the
ERASEPAGE pin is asserted. The Erase Page operation
allows the user to erase (set user data to zero) any page
within the FB.
The use of the OVERWRITEPAGE and PAGELOSSPROTECT
pins is the same for erase as for a Program Page
operation.
As with the Program Page operation, a STATUS of '01'
indicates that the addressed page is not erased.
A waveform for an Erase Page operation is shown in
Figure
Figure 2-36 • FB Erase Page Waveform
2 -4 4
Actel Fusion Programmable System Chips
OVERWRITEPROTECT
PAGELOSSPROTECT
2-36.
STATUS[1:0]
ADDR[17:0]
ERASE
BUSY
CLK
Page
A d v a n c e d v 1 . 4
Erase errors include the following:
1. Attempting to erase a page that is Overwrite
2. Attempting to erase a page that is not in the Page
3. The Write Count of the erased page exceeding the
4. The ECC Logic determining that there is an
Protected (STATUS = '01')
Buffer when the Page Buffer has entered Page
Loss Protection mode (STATUS = '01')
Write Threshold defined in the part specification
(STATUS = '11')
uncorrectable error within the erased page
(STATUS = '10')
Valid