Low swing flip-flop with reduced leakage slave latch

摘要

A data processing system includes first and second power distribution networks to provide power at first and second voltages, and a flip-flop. The second voltage is less than the first voltage. The flip-flop includes a master latch with a power node connected to the first power distribution network, a data signal input, and an output signal output that is driven at the first voltage, and a slave latch with a power node connected to the first power distribution network, an input coupled to the output of the master latch, a slave latch output signal output that is driven by the first voltage, and a feedback circuit with a first latch inverter having a power node connected to the second voltage, an input coupled to the master latch output, and an output terminal to provide an output signal that is driven by the second voltage.

主权项

1. A data processing system comprising:
a first power distribution network to provide power at a first voltage level; a second power distribution network to provide power at a second voltage level, wherein, relative to a reference voltage level, the second voltage level is less than the first voltage level; and a flip-flop comprising:
a master latch including:
a first power node connected to the first power distribution network;an input node to receive a data signal to be latched; andan output node coupled to the first power distribution network to provide a master latch output signal that is driven by the first power distribution network; anda slave latch comprising:
a first power node connected to the first power distribution network;a second power node connected to the second power distribution network;an output node to provide a slave latch output signal that is driven by the first power distribution network; anda feedback circuit comprising a first slave latch inverter connected to the second power node of the slave latch, including an input node coupled to the output of the master latch, and an output node to provide a first slave latch inverter output signal that is driven by the second power distribution network.