PULSED LOW POWER CMOS

A simple CMOS circuit technique called PPS (Pulsed Power Supply) CMOS is used to reduce the power dissipation of Conventional 0.9 μm CMOS by 10X when operated at 32 MHz. Combinational and sequential logic can utilize this technique including the I/O (input/output) buffers. Thus, PPS CMOS offers a full chip solution for low power dissipation CMOS. In addition, several advantages occur in this new circuit technique: (1) low power signal propagation through several gates in series can occur during each evaluation cycle; (2) crowbar current does not occur; (3) additional placed devices, i.e. bipolar, diodes, JFETs are not required to generate this low power capability; (4) the Conventional CMOS process is used to fabricate the circuit; (5) the same physical layout can be used either as a PPS CMOS circuit or as a Conventional CMOS circuit; (6) the device count is the same as that of Conventional CMOS; (7) PPS CMOS uses quasistatic logic levels; (8) capacitive coupling is used to store and restore the contents of a memory cell; (9) the parasitic diodes of the MOS devices are used to improve the noise margin of the circuit; (10) PPS CMOS can easily hold a static state and have the same low power dissipation properties of data inactive Conventional CMOS.