18.5 Pluto-3
● Many pins can be used as clock: CLK6 (pin 89), CLK7 (pin 88), DPCLK2 (pin 47), DPCLK4 (pin 64), DPCLK6 (pin
87), DPCLK7 (pin 93), DPCLK8 (pin 119), DPCLK10 (pin 136). Also CLK3 (pin 22) is available on a pad.
● All IOs use 3.3V powered banks that can use different IO standards like LVTTL3.3 or LVCMOS3.3
They are not directly 5V tolerant. Check the Altera Cyclone-II device handbook for more details.
FPGA RS-232 development boards Page 27
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