XC3S400AN-4FTG256I Xilinx Inc, XC3S400AN-4FTG256I Datasheet - Page 19

• Manufacturer Part Number: XC3S400AN-4FTG256I
• Description: IC FPGA SPARTAN-3AN 256FTBGA
• Manufacturer: Xilinx Inc
• Series: Spartan™-3ANr

Specifications of XC3S400AN-4FTG256I

• Number Of Logic Elements/cells: 8064
• Number Of Labs/clbs: 896
• Total Ram Bits: 368640
• Number Of I /o: 195
• Number Of Gates: 400000
• Voltage - Supply: 1.14 V ~ 1.26 V
• Mounting Type: Surface Mount
• Operating Temperature: -40°C ~ 100°C
• Package / Case: 256-LBGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Spartan-3AN FPGA In-System Flash User Guide
UG333 (v2.1) January 15, 2009
Default Addressing Mode
R
In the default addressing mode, specific memory bytes are addressed by page and by the
specific byte location within that page. As shown in
page size varies by FPGA part number.
Table 2-2: Default Addressing Mode
3S1400AN
Bit Location
3S200AN
3S400AN
3S700AN
3S50AN
Bit Location
FPGA
23 22 21 20 19 18 17 16 15 14 13 12 11 10
23 22 21 20 19 18 17 16 15 14 13 12 11 10
0 0 0 0 0 0
0 0 0 0
0 0 0
0 0
23
22
High Address
21
Sector
20
Page Address (4,096 pages)
Sector
Block Address
19
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Sector
Page Address (4,096 pages)
Block Address
18
Page Address (2,048 pages)
Block Address
17
Sector
Block Address
Page Address (512 pages)
Sector 0b
Sector 0a
16
Sector 0a
Sector 0b
Sector 0a
Sector 0b
15
Sector 0b
Sector 0a
14
Middle Address
13
X X X X X X X X X X X X X
X X X X X X X X X X X X X
12
Table
X X X X X X X X X X X X
X X X X X X X X X X X X
X X X X X X X X X X X X
X X X X X X X X X X X X
X X X X X X X X X X X X
X X X X X X X X X X X X
11
Don’t Care bits
Don’t Care bits
Don’t Care bits
10
Don’t Care bits
2-2, the number of pages and the
9
9
9
Don’t Care bits
Byte Address (528 bytes)
8
8
8
Don’t Care bits
Don’t Care bits
Don’t Care bits
Byte Address (264 bytes)
Byte Address (264 bytes)
Byte Address (264 bytes)
7
7
7
Addressing Overview
6
6
6
Low Address
5
5
5
4
4
4
3
3
3
2
2
2
1
1
1
19
0
0
0