XC3S1400AN-5FGG484C Xilinx Inc, XC3S1400AN-5FGG484C Datasheet - Page 39

• Manufacturer Part Number: XC3S1400AN-5FGG484C
• Description: IC FPGA SPARTAN-3AN 484FPGA
• Manufacturer: Xilinx Inc
• Series: Spartan™-3ANr

Specifications of XC3S1400AN-5FGG484C

• Number Of Logic Elements/cells: 25344
• Number Of Labs/clbs: 2816
• Total Ram Bits: 589824
• Number Of I /o: 372
• Number Of Gates: 1400000
• Voltage - Supply: 1.14 V ~ 1.26 V
• Mounting Type: Surface Mount
• Operating Temperature: 0°C ~ 85°C
• Package / Case: 484-BBGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Write and Program Commands
Table 4-1: Summary of Write and Program Commands
Spartan-3AN FPGA In-System Flash User Guide
UG333 (v2.1) January 15, 2009
Buffer
Write
Buffer to
Page
Program
with Built-
in Erase
Buffer to
Page
Program
without
Built-in
Erase
Page
Program
Through
Buffer
Page to
Buffer
Compare
(Program
Verify)
Command
Write data to SRAM
page buffer; when
complete, transfer to
ISF memory using
Buffer to Page
Program command
First erases selected
memory page and
programs page with
data from designated
buffer
Program a previously
erased page with data
from designated
buffer
Combines
Write
Page Program with
Built-in Erase
command
Verify that the ISF
memory array was
programmed
correctly
Best Application
R
with
Buffer
Buffer to
The Spartan
memory either directly to the main Flash memory array or through one of the SRAM page
buffers by issuing the appropriate command code.
various supported write and program commands. One form is best for writing large blocks
of contiguous data while the other form is better for writing single bytes to randomly-
addressed locations. Typically, the commands with faster data transfer also have a longer
initial latency and require one or more “don’t care” bytes after sending the appropriate
write command and 24-bit address.
Buffer 2
Buffer 2
Buffer 2
Buffer 2
Buffer 2
Command
Buffer 1
Buffer 1
Buffer 1
Buffer 1
Buffer 1
(0x84)
(0x87)
(0x83)
(0x86)
(0x88)
(0x89)
(0x82)
(0x85)
(0x60)
(0x61)
®
Code
-3AN FPGA application programs data into the In-System Flash (ISF)
Hex
(1)
(1)
(1)
(1)
(1)
Frequency
Maximum
CLK
50
50
50
50
50
www.xilinx.com
Erase
Page
Yes
Yes
No
No
No
ISF page
ISF page
first, ISF
Selected
Write To
SRAM
buffer
buffer
N/A
page
page
later
Write Size
Minimum
Table 4-1
1 byte
1 byte
N/A
page
page
One
One
One page
One page
One page
One page
summarizes and compares the
Write Size
Maximum
N/A
Chapter 4
SRAM Page
Buffers
Affects
Yes
Yes
No
No
No
Simulation
Support
Yes
Yes
Yes
Yes
Yes
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