Abstract:
PROBLEM TO BE SOLVED: To make generable a reference voltage in a comparatively short time by a method wherein a first switching element which is used to connect two bit lines and a selection transistor for two reference memory cells are turned on, only the selection transistor is turned off after a prescribed period, and the potential difference between the two bit lines is offset. SOLUTION: A first switching element S1 which short-circuits a first and second bit lines BL1 and the inverse of BL1, and a selection transistor for two reference memory cells RCs are turned on by a control unit C1. After a prescribed period has elaped, the first switching element S1 is continuously set to continuity, and the potential difference between the bit lines BL1 and the inverse of BL1 is offset. Consequently, the influence of the nonlinear memory capacitor of the reference memory cells RCs on a reference voltage is smaller than that, in a case where the selection transistor is set to continuity up to the perfect equilibrium of an electric charge between the bit lines BL1 and the inverse of BL1.
Abstract:
The invention relates to a circuit arrangement for demodulating a voltage which is (ASK)-modulated by the change of amplitude between a low and a high level. On a first and a second charging circuit one charging voltage (V1, V2) each is generated, and a decoupling device (S1) decouples the first charging circuit (C1, i1) at a predetermined ratio between the charging voltage (V2) of the second charging circuit (C2, i2) and an input voltage (UHF) of the rectifier circuit (D1, D2).
Abstract:
A voltage is (ASK)-modulated by a change in amplitude between a low and high level. On a first and second charging circuit one charging voltage is generated for each. A decoupling device decouples the first charging circuit with a predetermined ratio between the charging voltage of the second charging circuit and an input voltage for a rectifier circuit.
Abstract:
Test reading apparatus having a memory device having individual memory cells, a buffer device, which is connected to the memory device, and which stores data written to the memory cells in the memory device, an apparatus which has an input and an output, at least one test reference source which can be connected to the input of the apparatus by data stored in the buffer device, and a test apparatus, which is connected to the buffer device and to the output of the apparatus, and which is designed to compare a signal at the output of the apparatus with data stored in the buffer device.
Abstract:
Test reading apparatus having a memory device having individual memory cells, a buffer device, which is connected to the memory device, and which stores data written to the memory cells in the memory device, an apparatus which has an input and an output, at least one test reference source which can be connected to the input of the apparatus by data stored in the buffer device, and a test apparatus, which is connected to the buffer device and to the output of the apparatus, and which is designed to compare a signal at the output of the apparatus with data stored in the buffer device.
Abstract:
An integrated memory in which the plate lines run parallel to the bit lines and are driven by the column decoder. The effect achieved by the fact that each plate line is connected to the memory cells of the associated bit line is that only those memory cells whose associated bit line is required for the respective memory access are affected by the pulsed signals of the plate line. Therefore, only the potential of that bit line which is currently required for a data transfer is influenced by pulsed signals on the associated plate lines.
Abstract:
The invention provides a circuit configuration for demodulating a voltage that is ASK modulated by altering the amplitude between a low level and a high level. In this case, a first and a second charging circuit each produce a charging voltage and decoupling device decouples the first charging circuit when there is a prescribed ratio between the charging voltage of the second charging circuit and an input voltage for the rectifier circuit.
Abstract:
The signal comparison circuit device has a comparator circuit (1) with at least one input (11), for delivery of a reference signal (D) at one signal output (13) and delivery of a signal (DQ) at a second signal output (12) dependent on the input signal and the reference signal. An output circuit (2) has 2 inputs (21,22) coupled to the signal outputs of the comparator circuit and provides an output signal derived from one or other of 2 different supply potentials in dependence on the difference between the received signals, using 4 controlled paths provided by 2 pairs of transistors (T1,T2,T3,T4).
Abstract:
Test reading apparatus having a memory device having individual memory cells, a buffer device, which is connected to the memory device, and which stores data written to the memory cells in the memory device, an apparatus which has an input and an output, at least one test reference source which can be connected to the input of the apparatus by data stored in the buffer device, and a test apparatus, which is connected to the buffer device and to the output of the apparatus, and which is designed to compare a signal at the output of the apparatus with data stored in the buffer device.