Solution benefits when using gate array ASICs
Very low cost
Gate array ASICs are a very low-cost (ie. low unit cost AND low investment
cost) technology. This is in particular true when quantities exceed a certain
critical level, from which onwards investment cost are already amortized by
the savings in unit cost. Depending on the level of complexity of a design,
the critical quantity level from which onwards a gate array solution is commercially
more attractive than a comparable field-programmable gate arrays (FPGA) solution
can already be as low as 1,000 pieces per year.
Besides the purely commercial benefits, gate array ASIC solutions from NEC
Electronics have by nature some very strong advantages over other solutions
like SRAM-based field-programmable gate arrays.
Wide range operating ambient temperature / Ta
All gate array solutions offered by NEC Electronics feature a full ambient
temperature range from -40 up to +85°C.
Single supply voltage
NEC Electronics' gate array solutions do only require a single supply voltage
with an accuracy of only +/- 10% for proper operation.
High performance
Due to the fact that gate array solutions are using hard-wired connections
for the logic imlpementation they are inherently faster than other solutions
like FPGAs.
Low power consumption
Gate arrays show a much smaller power consumption in comparison to FPGAs
for two reasons: Firstly, the hard-wired logic results in much smaller leakage
currents and secondly, the rush current during the power-on phase is also significantly
lower.
Small number of I/Os
For the same application, gate array ASICs do need significantly less I/O
pins as other solutions. Firstly, no programming pins are required and secondly
- due to smaller power consumption - less power and ground pins are needed.
The reduction of I/O package pins usually comes along with the reduction of
package size.
Fast start-up time
As gate array ASICs are hard-wired and do not need to be re-programmed after
powering up, they are started-up much faster than FPGAs. Gate arrays do typically
need only less than 1msec for starting-up.
Low failure rate
Gate array ASICs show a very low failure rate of typically less than 3
FIT. Again, due to their SRAM-based architecture, FPGAs feature much worse values
here. So-called soft errors, where especially the FPGAs of the newest generations
are extremely susceptible to, are unknown to gate array ASICs.
High design data security
The circuit data with the customer proprietary design details are protected
by hard-wired connections within the gate array chip. As compared to FPGAs,
there is no bit stream necessary from the outside for re-programming at every
start-up.
Direct 5 Volt interface
With NEC Electronics gate arrays ASICs direct 5V connections are possible
without any additional external components (e.g. resistors).
Wide choice of packaing solutions
NEC Electronics' gate array ASICs are available with a very wide choice
of different packaging solutions, ranging from high-end Advanced BGA packages
(ABGA) over all kinds of QFP packages to very small outline, low pin-count Tape
Fine-Pitch BGA, SSOP or QFN packages.
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