A 200 MHz 32 b 0.5 W CMOS RISC microprocessor

1998 
This custom RISC microprocessor delivers approximately 230 Drystone/MIPS at 200 MHz while dissipating 0.5 W from a 1.5 V internal supply. The internal supply can be biased from 1.5 V to 2.0 V, while the external supply is always biased at 3.3 V. A split supply minimizes power consumption for a given application, while maintaining compatibility with a 3.3 V external environment. The die contains 2.5 M transistors and is 8.24/spl times/9.12 mm/sup 2/. It is fabricated in a 0.35 /spl mu/m, 2.0 V, n-well, single-poly, 3-metal-layer CMOS process. It is packaged in a 208 pin thin quad flat pack.
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