SEOUL, South Korea — Samsung Electronics Co. says its operating profit for the last quarter likely fell more than 56% from a year earlier amid a weak market for memory chips.

The South Korean tech giant on Friday estimated an operating profit of 6.5 trillion won ($5.5 billion) for the April-June quarter, which would represent a 56.3% drop from the same period last year.

The company says revenue likely fell 4% to 56 trillion won ($48 billion), but did not provide a detailed account of its performance by business division. It will release a finalized earnings report later this month.

Analysts say falling prices of DRAM and NAND memory chips are eating into the earnings of the company, which saw its operating profit during the first quarter drop more than 60% from last year.