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The dollar was mixed in Asian trade Monday ahead of an expected statement from US Federal Reserve chairman Ben Bernanke on an exit strategy from emergency liquidity measures, analysts said.
The greenback was trading at 90.50 yen, down from 90.54 in New York on Friday.
The euro, still weighed by fears over Greece's debt troubles, fetched 1.3511 dollars from 1.3530 in late US trade Friday and at 122.26 yen from 122.50.
Japan's financial markets were closed Monday for a public holiday.
Dariusz Kowalczyk, chief investment strategist of financial services firm SJ Seymour in Hong Kong, said the dollar remained on edge ahead of Bernanke's statement Thursday.
The Fed chairman is expected to address the issue of exiting emergency liquidity measures and the implications for recovery in the world's largest economy from its worst recession since the 1930s.
Under Bernanke, the Fed cut its base federal funds rate to a record low range of zero to 0.25 percent and created an array of programs to pump money into the financial system to restore credit flows.
Analysts said Bernanke must assure that the Fed can execute its strategy without roiling financial markets.
Investors were also anticipating monthly data on US home sales due this week.
