Circuit, method, and apparatus for acquiring resistance values of multiple resistors of target system

A resistance value acquisition method based on a circuit comprising a working voltage node resistor Rb, a common ground voltage node resistor Rc, a reference node resistor Ra, a first interconnect parasitic resistor Rwire1, a second interconnect parasitic resistor Rwire2, an encapsulation network resistor Rnet, a first diode Dio_VDD, a second diode Dio_Vss, and a third diode Dio_die, wherein the working voltage node resistor Rb is respectively connected to one end of the first interconnect parasitic resistor Rwire1 and one end of the encapsulation network resistor Rnet;

• the other end of the first interconnect parasitic resistor Rwire1 is connected to a negative electrode of the first diode Dio_VDD, and a positive electrode of the first diode Dio_VDD is respectively connected to the reference node resistor Ra and a negative electrode of the second diode Dio_Vss;
• a positive electrode of the second diode Dio_VSS is respectively connected to the common ground voltage node resistor Rc and a negative electrode of the third diode Dio_die via the second interconnect parasitic resistor Rwire2;
• and a positive electrode of the third diode Dio_die is connected to the other end of the encapsulation network resistor Rnet, the method comprising:
• determining nodes based on multiple resistors in the circuit, and selecting any two nodes as a node combination, wherein the multiple resistors at least comprise the working voltage node resistor Rb, the common ground voltage node resistor Rc, and the reference node resistor Ra;
• applying different voltage polarities between the two nodes of the node combination to perform voltage and current characteristic detection, and acquiring a series resistance value between the two nodes of the node combination under each of the different voltage polarities;
• and
• acquiring resistance values of the multiple resistors in the circuit based on the series resistance value.

A resistance value acquisition apparatus based on a circuit comprising a working voltage node resistor Rb, a common ground voltage node resistor Rc, a reference node resistor Ra, a first interconnect parasitic resistor Rwire1, a second interconnect parasitic resistor Rwire2, an encapsulation network resistor Rnet, a first diode Dio_VDD, a second diode Dio_Vss, and a third diode Dio_die, wherein the working voltage node resistor Rb is respectively connected to one end of the first interconnect parasitic resistor Rwire1 and one end of the encapsulation network resistor Rnet;

• the other end of the first interconnect parasitic resistor Rwire1 is connected to a negative electrode of the first diode Dio_VDD, and a positive electrode of the first diode Dio_VDD is respectively connected to the reference node resistor Ra and a negative electrode of the second diode Dio_Vss;
• a positive electrode of the second diode Dio_VSS is respectively connected to the common ground voltage node resistor Rc and a negative electrode of the third diode Dio_die via the second interconnect parasitic resistor Rwire2;
• and a positive electrode of the third diode Dio_die is connected to the other end of the encapsulation network resistor Rnet, the apparatus comprising a memory storing instructions and a processor in communication with the memory, wherein the processor is configured to execute the instructions to:
• determine nodes based on multiple resistors in the circuit, and select any two nodes as a node combination, wherein the multiple resistors at least comprise the working voltage node resistor Rb, the common ground voltage node resistor Rc, and the reference node resistor Ra;
• apply different voltage polarities between the two nodes of the node combination to perform voltage and current characteristic detection, and acquire a series resistance value between the two nodes of the node combination under each of the different voltage polarities;
• and
• acquire resistance values of the multiple resistors in the circuit based on the series resistance value.