Acquisitive Chinese investor Tsinghua Unigroup has bought 6% of Lattice. Lattice was rumoured as being a takeover target of Tsinghua earlier this year. Lattice’s shares rose 15.5% on news of the deal. The speculation is that Tsinghua wants Lattice for the same reason as Intel bought Altera, to.provide FPGA acceleration in server SoCs. The effect …