afs600 Actel Corporation, afs600 Datasheet - Page 54

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

Flash Memory Block Addressing
Figure 2-33
Figure 2-33 • Flash Memory Block Organization
Each FB is partitioned into sectors, pages, blocks, and bytes. There are 64 sectors in an FB, and each sector contains 32
pages and 1 spare page. Each page contains 8 data blocks and 1 auxiliary block. Each data block contains 16 bytes of
user data, and the auxiliary block contains 4 bytes of user data.
Addressing for the FB is shown in
Table 2-20 • FB Address Bit Allocation ADDR[17:0]
2 -4 0
Actel Fusion Programmable System Chips
17
Block
Block Organization
0
shows a graphical representation of the flash memory block.
Sector
140
1
12
2
3
Table
1190
11
4
Page 0
2-20.
Page 1
Page
5
Page 2
Page 3
6
7
A d v a n c e d v 1 . 4
7
Page 31
Spare Page
6
Block
Notes:
1 block = 128 bits
1 page = 8 blocks plus the AUX block
1 sector = 33 pages
1 Flash array = 64 sectors
4
3
Byte
0