How does the Winbond Electronic Data Bit Status Detector work?

The Winbond electronic data bit state detector operates as follows:

Data reception and impedance generation: The data reception circuit receives multiple bits of the data signal and provides the corresponding first impedance between the first sense input and the reference ground terminal according to the number of logic level 0 in these bits. For example, when the number of logic level 0 bits in the data signal is less than or equal to a set value, a first impedance value is provided; when the number of logic level 0 bits is greater than the set value, a different first impedance value is provided.

Reference Impedance Setting: The reference circuit receives a plurality of bias voltages and provides a fixed second impedance between the second sense input and the reference ground based on these bias voltages. This second impedance serves as a reference value and is typically set to a magnitude between the above and the above.

Sense Amplification and Comparison: The sense amplifier circuit has a first sense input and a second sense input, and its main function is to sense and amplify the difference between the first impedance on the first sense input and the second impedance on the second sense input to produce a sense output signal. When the first impedance is greater than the second impedance, the sense amplifier circuit outputs a sense output signal at a logic level; when the first impedance is less than or equal to the second impedance, the sense amplifier circuit outputs another sense output signal at a different logic level. In this way, the data bit state detector can quickly determine whether the number of bits with logic level 0 in the data signal is greater than a set value, and thus determine the state of the data bits.