5 Volt ASICs
The smaller “L’s” and thinner oxides associated with advanced technologies generally require lower operating voltages. And that makes them inappropriate for use as replacements for older, 5 volt circuits. Tekmos had pioneered a technique of utilizing the second oxide found in most processes as a means of using newer technologies to create circuits that operate safely at the older 5 volt standards. We also use 0.6u technology for 5 volt circuits that also require mixed signal or Non-Volatile Memories (NVM).
The reduced mask costs for the 0.5u and greater technologies compensate for the larger die sizes, and frequently result in the most cost effective solution for a given application.
The performance of these circuits easily meets the requirements of most applications. Our 5 volt, 0.35u process works effortlessly at 50 MHz, and has been used in applications with 300 MHz clock rates. Our 0.6u process is generally limited to clock frequencies of under 75 MHz.
Both processes also do a good job of supporting mixed signal applications. Poly capacitors and high value implanted resistors are available. Also, our existing gate arrays have mixed signal sections that can provide a low NRE solution for many applications.
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Interfacing With Tekmos
We will start where you want. If this is a new design, we can accept a RTL signoff flow. In the case of a FPGA conversion, we can start with the FPGA design files. And in the case of a replacement of an existing ASIC, we can start with the original ASIC design files.
Ideally, there are vectors for the design. If not, then Tekmos can write them for you.
We will do the design conversion and verify the vectors. Then we do the layout and run the post route simulations. Your involvement is typically related to dealing with any issues that we might discover in the design. Design cycles are dependent on the design size, but usually require about 4 weeks.
After tapeout, we make wafers and assemble prototypes. The time required will vary with the process and holiday schedules, but typically takes about 8 weeks. We will then deliver 10 prototypes for approval. Production quantities are available 2 weeks afer prototpe approval.
Packaging and Pinout
We usually provide an exact match on the package and pinout. Sometimes difficulties arise with the availability of a specific package. In those cases, it is best to modify the PC board artwork to match an available package. If this is not possible, then we can usually provide an adapter that allows the use of the original PC board.