Freescale Semiconductor,inc.

Sunny Arora

Mukesh Bansal

Kumar Abhishek

Shilpa Gupta

Gaurav Jain

Ankesh Jain

Shruti Rakheja

Dipesh K Gupta

Pawan Deep Gandhi

Ritika Singh

Rashmi Moudgil

A system for scan testing various clock domains of an integrated circuit includes a clock gate control unit and clock gating cells. The clock gating cells receive a single test clock signal provided externally through one package pin of the integrated circuit. The clock gate control unit provides clock gate control signals to the clock gating cells. The clock gating cells generate time-staggered clock signals based on the clock gate control signals.

System for testing integrated circuit with asynchronous clock domains

A flip-flop circuit with an internal level shifter includes an input stage, a clock input stage, an output stage and a level shifting stage. The output stage generates an output signal based on an input signal received by the input stage and a clock signal received by the clock input stage. The level shifting stage shifts-up the voltage level of the output signal.

Flip-flop circuit with internal level shifter

An inverter circuit has a digital signal amplitude converter having an input coupled to an inverter circuit input node, and an amplitude converter output. A positive threshold voltage compensation generator has a positive threshold voltage compensation generator input coupled to the amplitude converter output. A negative threshold voltage compensation generator has a negative threshold voltage compensation generator input coupled to the inverter circuit input node, and a negative threshold voltage compensation generator output. A multiplexer has a first input coupled to the positive threshold voltage compensation generator output, a second input, coupled to the negative threshold voltage compensation generator output, and a multiplexer output. An inverter module has an output providing an inverter circuit output node, and an inverter module input is coupled to the multiplexer output. The inverter circuit at least partially compensates for variations in a threshold voltage associated with switching of transistors that form the inverter module.

Inverter circuit with compensation for threshold voltage variations

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Noida, India

Sunny Arora