XC3S500E-4PQG208I Xilinx Inc, XC3S500E-4PQG208I Datasheet - Page 43

• Manufacturer Part Number: XC3S500E-4PQG208I
• Description: IC FPGA SPARTAN-3E 500K 208-PQFP
• Manufacturer: Xilinx Inc
• Series: Spartan™-3Er

Specifications of XC3S500E-4PQG208I

• Package / Case: 208-MQFP, 208-PQFP
• Mounting Type: Surface Mount
• Voltage - Supply: 1.1 V ~ 3.465 V
• Operating Temperature: -40°C ~ 100°C
• Number Of I /o: 158
• Number Of Logic Elements/cells: *
• Number Of Gates: *
• No. Of Logic Blocks: 1564
• No. Of Gates: 500000
• No. Of Macrocells: 10476
• Family Type: Spartan-3E
• No. Of Speed Grades: 4
• No. Of I/o's: 158
• Clock: RoHS Compliant
• Total Ram Bits: 368640
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Setting the WRITE_MODE attribute to a value of
NO_CHANGE, puts the DO outputs in a latched state when
asserting WE. Under this condition, the DO outputs retain
DS312-2 (v3.8) August 26, 2009
Product Specification
R
Figure 35: Waveforms of Block RAM Data Operations with NO_CHANGE Selected
ADDR
Data_in
CLK
WE
DO
EN
DI
DISABLED
0000
DI
Internal
Memory
XXXX
aa
READ
MEM(aa)
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DO
bb
MEM(bb)=1111
1111
WRITE
the data driven just before WE is asserted. NO_CHANGE
timing is shown in the portion of
is High.
No change during write
2222
cc
MEM(cc)=2222
WRITE
dd
DS312-2_07_020905
XXXX
READ
MEM(dd)
Figure 35
Functional Description
during which WE
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