* Nikkei down 3.4 pct after rally, exporters slide
* Toshiba tumbles on loss, chips op merger talk with NEC
* Nintendo plunges by daily limit
* U.S., Japan grim economy data weigh (Adds details)
By Aiko Hayashi
TOKYO, Jan 30 (Reuters) - The Nikkei average slid 3.4 percent on Friday, with Toshiba <6502.T> shares plunging on news that it may merge some chip operations with NEC <6701.T>, while a firmer yen and deepening recession worries hit other exporters.
Nintendo Co <7974.OS> tumbled after it cut its Wii game console sales target and profit forecasts. [
]Toyota Motor Corp <7203.T> fell after source said its annual operating loss is likely to be bigger than the automaker's latest forecast, though market analysts said that had been largely factored in. [
]Adding to the gloom, Japanese industrial production fell a record 9.6 percent in December, while core annual inflation slowed to 0.2 percent, in further signs of a deepening recession. [
]"There is no sign of bottoming out. As industrial output posted a record drop, it is hard to expect a recovery anytime soon," said Daisuke Uno, chief strategist at Sumitomo Mitsui Banking Corp.
U.S. data also showed the amount of people filing for unemployment benefits hit a record in mid-January, while orders for long-lasting goods fell for the fifth straight month in December and new home sales slid to a record low. [
]The benchmark Nikkei <
> shed 276.19 points to 7,975.05. It ended up 1.8 percent on Thursday, marking a three-day winning streak, in which it had gained more than 7 percent.The broader Topix <
> lost 3 percent to 794.03.Toshiba, the world's No. 2 NAND flash memory maker, is in talks with NEC, that will likely focus on Toshiba spinning off its system chip operations and merging them with NEC Electronics <6723.T>, a person with knowledge of the discussions said. [
]"It shows they can't survive on their own. Despite some cost cut impact, it's doubtful if they can beat their international rivals even as a team. The domestic chip industry appears at the brink of death," said Fumiyuki Nakanishi, manager at SMBC Friend Securities.
Goldman Sachs cut its rating on Toshiba to sell from neutral.
The news comes after Toshiba posted a third-quarter loss of $1.8 bln and cut its annual earnings forecast.
TOSHIBA TUMBLES
Toshiba shares, the most traded stock by turnover on the main board, dived 14.8 percent to 328 yen, while NEC dropped 5.3 percent to 248 yen. But NEC Electronics gained 5.9 percent to 642 yen.
Toyota Motor Corp <7203.T> shed 3.9 percent to 2,930 yen, while smaller rival Honda Motor Co <7267.T> dropped 6.8 percent to 2,125 yen.
Other exporters also took a beating. Electronic components maker TDK Corp <6762.T> skidded 5.5 percent to 3,450 yen and industrial robot maker Fanuc Ltd <6954.T> sank 6.7 percent to 5,460 yen.
The dollar dipped 0.3 percent to 89.75 yen <JPY=>, though still off a 13-