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Random freezes, missing sound and display glitches usually trace back to one bad driver. Find and replace yours safely.Free scan · under a minuteMotorola’s 1999 plan was to make its Sendai-based Tohoku Semiconductor operation the hub of an integrated Asian semiconductor site, bringing planning, design and production together. Motorola later took full ownership of the joint venture, but the announced mega-site did not endure: the 8-inch fab transferred to Fujifilm in 2003, and Freescale closed its remaining Sendai wafer operation in 2011.
What Motorola announced in 1999
Tohoku Semiconductor (TSC) was a Motorola–Toshiba joint venture in Sendai, established in 1987. The partnership brought Toshiba’s memory expertise together with Motorola’s logic and microprocessor technology. By the time of the 1999 announcement, Motorola had also added an assembly plant in Sendai in 1991 and a design and research-and-development center in 1995.
Motorola described Sendai as more than a manufacturing location. Its “mega site” concept was to concentrate semiconductor planning, design and production there, with TSC as a significant base for Motorola’s operations in Japan and the Asia-Pacific region. The idea reflected Motorola executive vice president Motohiro Kitajima’s view that, in the system-on-chip era, integrating company resources in one place mattered more than locating close to individual customers.
The strategy was modeled on Motorola’s Austin operations. In Japan, the company also set a goal of increasing its semiconductor market share from 2 percent to 10 percent over five years. That was a stated target, not a subsequently verified result.
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What the fab upgrade was meant to do
The proposed investment was about $190 million for upgrading TSC’s 8-inch wafer line. The plan called for moving from a 0.5-micron process to a 0.3-micron process while keeping output at roughly 20,000 wafers per month. These were announced project figures; they describe the intended upgrade and capacity, not proof that the target configuration was achieved.
The wider TSC operation included 6-inch and 8-inch manufacturing. The 1999 investment plan specifically concerned the 8-inch line, rather than announcing that every Sendai production line would receive the same process upgrade.
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How ownership was supposed to change
Before the buyout, Toshiba and Motorola each held half of TSC. In September 1999, the companies agreed that Motorola would acquire Toshiba’s entire 50 percent stake when the joint venture’s term ended at the end of 2000. A later Japan External Trade Organization record notes Motorola’s 100 percent takeover of TSC in Sendai by the end of 2000.
Full ownership fit the announced goal of concentrating resources and coordinating planning, design and production in Sendai. The stated rationale was strategic integration; the available account does not quantify the expected “synergy effect,” and it does not establish that Motorola achieved its Japanese market-share target.
Plan and later outcome
| Aspect | 1999 plan | What followed |
|---|---|---|
| Ownership | Motorola and Toshiba were equal joint-venture partners; Motorola agreed to buy Toshiba’s 50 percent stake by the end of 2000. | Motorola became TSC’s sole owner by the end of 2000. |
| Manufacturing | Sendai was to integrate semiconductor planning, design and production. The announced investment targeted the 8-inch line. | In 2003, Fujifilm Microdevices agreed to take over the 8-inch fab; TSC continued 6-inch automotive production. |
| Process and capacity | The 8-inch line was slated to move from 0.5 micron to 0.3 micron, with capacity planned at about 20,000 wafers per month. | The later transfer changed the site’s configuration; the available account does not establish that the 1999 process and capacity targets were achieved. |
| Durability | The Sendai mega-site was presented as a strategic base for Motorola in Japan and the Asia-Pacific region. | Motorola’s semiconductor business became Freescale in 2004. Freescale closed the remaining Sendai wafer operation in March 2011 after earthquake damage and consolidation. |
What happened to the Sendai operation
Motorola’s semiconductor business was separated into Freescale in 2004. In 2003, before that separation, Fujifilm Microdevices agreed to take over TSC’s 8-inch fab, while TSC continued making automotive products on its 6-inch line. The transfer meant the 1999 vision of a unified Motorola operation in Sendai had already changed well before the eventual closure.
Freescale announced on April 5, 2011, that damage from the March 11 earthquake was extensive and that its Sendai wafer facility would not reopen. The company described the facility as having about 600 employees before closure. The shutdown followed both the earthquake damage and business consolidation; it was not simply a continuation of the original Motorola mega-site plan.
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Why the plan matters—and what it does not show
The episode illustrates the difference between a capital-investment announcement and a lasting industrial footprint. Motorola did complete the ownership change, but the fab assets and production scope later shifted, and the successor wafer operation ultimately closed. The 1999 announcement therefore documents Motorola’s intended strategy and targets, not a guarantee that the integrated Sendai site would persist.
The documented history here ends with the 2011 closure. It does not establish who operates the original TSC site today, so the old mega-site should not be described as a current Motorola or Freescale facility.
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