(Updates with closing prices)

By Satoshi Sugiyama

TOKYO, Aug 4 (Reuters) - Japan's Nikkei share average ended

higher on Tuesday, supported by relatively upbeat demand for

chip-related stocks, though investors remained wary of possible

further yen-buying intervention.

The Nikkei closed 0.32% higher at 63,957.53, after

swinging between gains and losses. The broader Topix

nudged 0.04% higher to 3,961.78.

Semiconductor-related stocks were mostly positive, with

cables and optical fibre manufacturer Fujikura ( FKURF ) up

7.88%, memory chipmaker Kioxia ( KXHCF ) rising nearly 6% and

chip-making equipment maker Tokyo Electron ( TOELF ) gaining

3.11%.

Japan's Finance Ministry said on Monday Tokyo and Washington

had conducted coordinated yen-buying intervention and would not

hesitate to take further action.

"Authorities have also indicated they could intervene again

if the yen weakens further, so caution remains," said Shuutarou

Yasuda, a market analyst at Tokai Tokyo Intelligence Laboratory.

The dollar traded at 157.62 yen, up 0.29%. A stronger

yen reduces the value of overseas revenue for Japan's many

heavyweight exporters.

Meanwhile, Toyota Motor ( TM ) shares ended 1.52% lower

after falling as much as 3.12%, as the world's biggest automaker

posted a fifth straight quarterly earnings decline, hurt by

slumping sales in China.

The company raised its annual operating profit forecast by

13% to reflect a weaker yen and announced a share buyback plan

worth up to 1 trillion yen, or 4.22% of outstanding stock.

Overall, market breadth was negative, with 129 decliners in

the Nikkei against 94 gainers and two unchanged.

The largest losers by percentage in the index were meat

processor NH Foods ( NHFOF ), down 8.41%, followed by global

glass and chemicals manufacturer AGC, which shed 7.88%,

after their earnings failed to impress investors.

The largest percentage gainer on the index was motorcycle

maker Yamaha Motor ( YAMHF ), which surged 13.4% to close at a

more than two-year high, after stellar earnings and an upward

revision to its full-year forecast. Cable and components maker

Furukawa Electric ( FUWAF ) was up 11.44%.

(Reporting by Satoshi Sugiyama; Editing by Subhranshu Sahu)