摘要:
A microcontroller of the present invention integrates a plurality of independent counters of corresponding operation functions into a pool counting circuit and executes each corresponding operation function based on each of different operation cycles. Therefore, the present invention can increase the circuit pool level and reduce the power consumption and the chip size.
摘要:
A circuit and method for measuring capacitance and capacitance mismatch of at least one capacitor pair are provided. The circuit includes a first switch, a second switch, a third switch and a P-type transistor. A terminal of the first switch is connected to a terminal of a first capacitor, and a terminal of the second switch is connected to a terminal of a second capacitor. A terminal of the third switch is connected to another terminal of the first capacitor and another terminal of the second capacitor, and a gate of the P-type transistor is connected to another terminal of the third switch. When the first, second and third switches are turned on, a capacitance of the first capacitor, a capacitance of the second capacitor, or a capacitance mismatch between the first and second capacitances is measured.
摘要:
A method and apparatus for measuring a delay time is provided. First, a plurality of first/second phase signals, a first/second standard signal, and an inverse signal of the second standard signal are generated. The inverse signal of the second standard signal is applied to a second conductive line close to at least an adjacent conductive line. The first/second standard signal is applied to the first/second conductive line to obtain a first/second transmission signal. Then, the first/second transmission signal is sequentially sampled by the first/second phase signals to sequentially obtain a plurality of first/second sampling results. The first/second sampling results are sequentially identified by a first/second identifying level to obtain a first/second identification result. Accordingly, the delay time between the first and the second transmission signal may be obtained by comparing the different the second and the first identification result.
摘要:
A circuit and method for measuring capacitance and capacitance mismatch of at least one capacitor pair are provided. The circuit comprises a first switch, a second switch, a third switch and a P-type transistor. A terminal of the first switch is connected to a terminal of a first capacitor, and a terminal of the second switch is connected to a terminal of a second capacitor. A terminal of the third switch is connected to another terminal of the first capacitor and another terminal of the second capacitor, and a gate of the P-type transistor is connected to another terminal of the third switch. When the first, second and third switches are turned on, a capacitance of the first capacitor, a capacitance of the second capacitor, or a capacitance mismatch between the first and second capacitances is measured.
摘要:
A capacitor structure including a conductive layer and a dielectric layer is provided. The conductive layer includes a first pattern and a second pattern arranged alternatively with respect to each other. In addition, the dielectric layer is disposed between the first spiral pattern and the second spiral pattern. Since in the capacitor structure described in the present invention, the first pattern and the second pattern being used as electrodes are disposed in a spiral shape, the capacitance per unit area of the capacitor structure is increased.
摘要:
An expandable decoding circuit includes a latch unit, a latch result selecting unit, and at least one decoding circuit. The latch unit latches raw data and outputs the latch values and the latch inverse-values of the raw data. The latch result selecting unit composes the latch values and the latch inverse-values according to the target decoding value of the decoding unit to generate a pre-decoding value. The latch result selecting unit outputs the pre-decoding value to the corresponding decoding unit. The decoding circuit determines whether a decoding signal is outputted or not according to the pre-decoding value. Thereby, when a new function needs to be added to the deciding circuit, the present invention does not change the original decoding circuit and implements the decoding unit for the new function.
摘要:
A capacitor structure including a conductive layer and a dielectric layer is provided. The conductive layer includes a first pattern and a second pattern arranged alternatively with respect to each other. In addition, the dielectric layer is disposed between the first spiral pattern and the second spiral pattern. Since in the capacitor structure described in the present invention, the first pattern and the second pattern being used as electrodes are disposed in a spiral shape, the capacitance per unit area of the capacitor structure is increased.
摘要:
A low noise output buffer to simultaneously reduce switching noise and output signal ringing for output ringing and maintain DC current. A temporary and a steady-state output buffers are supplied by a buffer voltage source and an internal circuit voltage source, respectively. Each driver has a pull-up and a pull-down transistors. While switching the output buffer from a high voltage level to a low voltage level or from a low voltage level to a high voltage level, a predriver and a single steady-state circuit are designed to respectively generate a large simultaneous switching noise at the buffer voltage source and a small simultaneous switching noise at the internal circuit voltage source. A Schmitt trigger circuit is also used to turn off the temporary driver, so as to reduce the output signal ringing while the steady-state driver maintains a supply of DC current. In another design of a low noise output buffer to reduce ground bounces and output signal ringing as well as to maintain a DC current, a temporary driver is used. An adaptive characteristic of the low noise output buffer under different loading conditions is achieved by a feedback circuit. The temporary driver is turned on only during the middle period of output transition time to provide an additional charging or discharging current. Since the temporary driver is always off apart from the transition period, the effect of reducing ground bounces and output signal ringing can thus be outstanding.
摘要:
A method for resetting a micro controller is disclosed. The method uses an improved micro controller reset circuit designed for loading micro controller options regardless of whether a reset key is pressed after the power is turned on. In this method, the initial values of the micro controller are recovered so as to reduce power consumption and avoid conflict between signals.
摘要:
A method and apparatus for measuring a delay time is provided. First, a plurality of first/second phase signals, a first/second standard signal, and an inverse signal of the second standard signal are generated. The inverse signal of the second standard signal is applied to a second conductive line close to at least an adjacent conductive line. The first/second standard signal is applied to the first/second conductive line to obtain a first/second transmission signal. Then, the first/second transmission signal is sequentially sampled by the first/second phase signals to sequentially obtain a plurality of first/second sampling results. The first/second sampling results are sequentially identified by a first/second identifying level to obtain a first/second identification result. Accordingly, the delay time between the first and the second transmission signal may be obtained by comparing the different the second and the first identification result.