XC3SD1800A-4CS484I Xilinx Inc, XC3SD1800A-4CS484I Datasheet - Page 56

• 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

Serial Peripheral Interface (SPI) Configuration Timing
X-Ref Target - Figure 13
Table 52: Timing for Serial Peripheral Interface (SPI) Configuration Mode
DS610 (v3.0) October 4, 2010
Product Specification
(Open-Drain)
T
T
T
T
T
T
T
PROG_B
CCLK1
CCLKn
MINIT
INITM
CCO
DCC
CCD
PUDC_B
Symbol
VS[2:0]
CSO_B
INIT_B
M[2:0]
CCLK
(Input)
(Input)
(Input)
(Input)
(Input)
MOSI
DIN
Shaded values indicate specifications on attached SPI Flash PROM.
Initial CCLK clock period
CCLK clock period after FPGA loads ConfigRate setting
Setup time on VS[2:0] variant-select pins and M[2:0] mode pins before the
rising edge of INIT_B
Hold time on VS[2:0] variant-select pins and M[2:0] mode pins after the
rising edge of INIT_B
MOSI output valid delay after CCLK falling edge
Setup time on DIN data input before CCLK rising edge
Hold time on DIN data input after CCLK rising edge
T
MINIT
Figure 13: Waveforms for Serial Peripheral Interface (SPI) Configuration
Pin initially pulled High by internal pull-up resistor if PUDC_B input is Low.
Pin initially high-impedance (Hi-Z) if PUDC_B input is High. External pull-up resistor required on CSO_B.
<1:1:1>
<0:0:1>
PUDC_B must be stable before INIT_B goes High and constant throughout the configuration process.
T
INITM
T
CCLK1
Description
T
CSS
Command
Mode input pins M[2:0] and variant select input pins VS[2:0] are sampled when INIT_B
goes High. After this point, input values do not matter until DONE goes High, at which
point these pins become user-I/O pins.
(msb)
Spartan-3A DSP FPGA Family: DC and Switching Characteristics
T
CCO
www.xilinx.com
T
DSU
T
MCCL1
Command
(msb-1)
T
MCCH1
T
DH
Minimum
Data
50
0
T
T
New ConfigRate active
CCLK1
See
See
See
See
See
MCCL n
Data
T
T
V
Maximum
DCC
Table 46
Table 46
Table 50
Table 50
Table 50
–
–
Data
DS529-3_06_102506
T
T
CCLK n
T
CCD
MCCH n
Units
Data
ns
ns
56