LFXP20C-3FN256C Lattice, LFXP20C-3FN256C Datasheet - Page 269

• Manufacturer Part Number: LFXP20C-3FN256C
• Description: FPGA - Field Programmable Gate Array 19.7K LUTS 188 I/O
• Manufacturer: Lattice

Specifications of LFXP20C-3FN256C

• Number Of Programmable I/os: 188
• Data Ram Size: 405504
• Supply Voltage (max): 3.465 V
• Maximum Operating Temperature: + 90 C
• Minimum Operating Temperature: 0 C
• Mounting Style: SMD/SMT
• Supply Voltage (min): 1.71 V
• Package / Case: FPBGA-256
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Lattice Semiconductor
Figure 11-9. Clock Preferences in the Pre-map Preference Editor
Secondary Clock Sources and Distribution
LatticeECP/EC and LatticeXP devices support quadrant base Secondary Clocks. Figure 11-10 describes the Sec-
ondary Clock arrangement.
Figure 11-10. Secondary Clock Center Switch Box
Limitations on Secondary Clock Availability
As illustrated in Figure 11-11, three secondary clocks are shared with CLK, CE and LSR.
This routing scheme limits the secondary clocks available per quadrant base to three, which results in a maximum
of 12 available secondary clocks per device. Figure 11-11 illustrates the primary and secondary clock distribution
structure of the PFUs.
General
Routing
PCLKT7
4
Scondary Clock Trunk
Scondary Clock Trunk
QUADRANT BL
QUADRANT TR
SCLK0 SCLK1 SCLK2 SCLK3
SCLK0 SCLK1 SCLK2 SCLK3
8:1
8:1
Secondary Clocks in Center Switch Box
8:1
8:1
8:1
8:1
8:1
8:1
11-13
SCLK3 SCLK2 SCLK1 SCLK0
SCLK3 SCLK2 SCLK1 SCLK0
8:1
8:1
Scondary Clock Trunk
Scondary Clock Trunk
sysCLOCK PLL Design and Usage Guide
QUADRANT BR
QUADRANT TR
8:1
8:1
8:1
8:1
8:1
8:1
General
Routing
LatticeECP/EC and LatticeXP
General
Routing
4
4
4
PCLKT2
General
Routing