XC3SD1800A-4CS484I Xilinx Inc, XC3SD1800A-4CS484I Datasheet - Page 59

• Manufacturer Part Number: XC3SD1800A-4CS484I
• Description: FPGA Spartan®-3A Family 1.8M Gates 37440 Cells 667MHz 90nm Technology 1.2V 484-Pin LCSBGA
• Manufacturer: Xilinx Inc

Specifications of XC3SD1800A-4CS484I

• Package: 484LCSBGA
• Family Name: Spartan®-3A
• Device Logic Units: 37440
• Device System Gates: 1800000
• Maximum Internal Frequency: 667 MHz
• Typical Operating Supply Voltage: 1.2 V
• Maximum Number Of User I/os: 309
• Ram Bits: 1548288

Table 55: Configuration Timing Requirements for Attached Parallel NOR BPI Flash
DS610 (v3.0) October 4, 2010
Product Specification
Notes:
1.
2.
3.
T
(t
T
(t
T
(t
T
(t
ACC
CE
ELQV
OE
GLQV
AVQV
BYTE
FLQV,
Symbol
These requirements are for successful FPGA configuration in BPI mode, where the FPGA generates the CCLK signal. The
post-configuration timing can be different to support the specific needs of the application loaded into the FPGA.
Subtract additional printed circuit board routing delay as required by the application.
The initial BYTE# timing can be extended using an external, appropriately sized pull-down resistor on the FPGA’s LDC2 pin. The resistor
value also depends on whether the FPGA’s PUDC_B pin is High or Low.
)
)
)
t
FHQV
)
Parallel NOR Flash PROM chip-select time
Parallel NOR Flash PROM output-enable time
Parallel NOR Flash PROM read access time
For x8/x16 PROMs only: BYTE# to output valid time
Description
Spartan-3A DSP FPGA Family: DC and Switching Characteristics
www.xilinx.com
(3)
T
ACC
≤
50%T
T
CCLKn min
T
T
BYTE
OE
CE
Requirement
≤
≤
≤
(
T
T
T
INITADDR
INITADDR
)
INITADDR
–
T
CCO
–
T
DCC
–
PCB
Units
ns
ns
ns
ns
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