microSPARC

microSPARC

Produced	From 1992 to 1994
Designed by	Sun Microsystems
Max. CPU clock rate	40 MHz to 125 MHz
Instruction set	SPARC V8
Cores	1

The microSPARC (code-named "Tsunami") is a microprocessor implementing the SPARC V8 instruction set architecture (ISA) developed by Sun Microsystems. It was 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 contained 800,000 transistors.

There were two derivatives of the microSPARC: the microSPARC-II and microSPARC-IIep. The microSPARC-IIep was a 100 MHz microSPARC-II with an integrated PCI controller for embedded systems. It was developed and fabricated by LSI Logic for Sun. The microprocessor was used by Sun in their JavaStation Network Computer.

Name (codename)	Model	Frequency (MHz)	Arch. version	Year	Total threads	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	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

References

• Sun Taps LSI For Low-Cost SPARC Design And Fab. (12 March 1997). Computer Business Review.
• Sun Microsystems, Inc. (10 August 1992). "Highly Integrated SPARC Processor Implementation (Tsunami)". Hot Chips presentation.'