The microSPARC (code-named Tsunami ) is a discontinued microprocessor implementing the SPARC V8 instruction set architecture (ISA), developed by Sun Microsystems . It is a low-end microprocessor intended for low-end workstations and embedded systems . The microprocessor was developed by Sun, but the floating-point unit (FPU) was licensed from Meiko Scientific . It contains 800,000 transistors. It was used in the SPARCclassic and SPARCstation LX among others.
There are two variants of the microSPARC-II (code-named Swift ): the microSPARC-II and microSPARC-IIep. The microSPARC-II is used in the SPARCstation 5 . The microSPARC-IIep is a 100 MHz microSPARC-II with an integrated PCI controller for embedded systems . It was developed and fabricated by LSI Logic for Sun, and used in their JavaStation Network Computer .
Name (codename)
Model
Frequency (MHz)
Arch. version
Year
Total threads[ 1]
Process (μm)
Transistors (millions)
Die size (mm²)
IO Pins
Power (W)
Voltage (V)
L1 Dcache (k)
L1 Icache (k)
L2 Cache (k)
L3 Cache (k)
microSPARC I (Tsunami)
TI TMS390S10 / TMX390S10
40–50
V8
1992
1×1=1
0.8
0.8
225?
288
2.5
5
2
4
none
none
microSPARC II (Swift)
Fujitsu MB86904 / Sun STP1012
60–125
V8
1994
1×1=1
0.5
2.3
233
321
5
3.3
8
16
none
none
Die photos
TI microSPARC I
Sun microSPARC II
References
^ Threads per core × number of cores
Sun Microsystems, Inc. (10 August 1992). "Highly Integrated SPARC Processor Implementation (Tsunami)". Hot Chips presentation.'
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