摘要:
A charge pump charges a first capacitor to a predetermined input voltage using a first switch. The first switch is coupled to a first terminal of the first capacitor for coupling the first terminal to an input terminal that receives the predetermined input voltage. A second switch couples a second terminal of the first capacitor to a reference voltage terminal. Charge is sequentially transferred from the first capacitor to an output capacitance by using the first switch. A portion of charge is sequentially removed from the output capacitance to the input terminal using a third switch and a second capacitor. Configuration logic provides control signals to make one or more of a plurality of charge transfer capacitors switch the same as said first capacitor switches.
摘要:
A reference voltage regulation circuit (143) is provided in which one or more input voltage signals (Vref, Vref′) are selectively coupled to a configurable amplifier (114) which is coupled through a sample and hold circuit (120) to a voltage follower circuit (122) which is coupled in feedback to the configurable amplifier (114) for generating an adjusted output voltage at a circuit output (130), where the voltage follow circuit comprises a resistor divider circuit (126) that is controlled by a calibration signal (Cal ) generated by a counter circuit (128) selectively coupled to the output of the configurable amplifier when configured as a comparator for generating the calibration signal in response to a clock signal, where the calibration signal represents a voltage error component (Verror, Voffset) that is removed from the circuit output when the calibration signal is applied to the resistor divider circuit during normal operational.
摘要:
A level converter comprises first and second latches, and first through fourth transistors. The first latch has first and second power supply terminals, and first and second nodes. The second latch has third and fourth power supply terminals, and third and fourth nodes. The first transistor has a first current electrode coupled to the first node, a control electrode coupled to receive a first bias voltage, and a second current electrode. The second transistor has a first current electrode coupled to the second current electrode of the first transistor, a second current electrode coupled to the third node, and a control electrode coupled to receive a second bias voltage. The third transistor has a first current electrode coupled to the second node, a control electrode coupled to receive the first bias voltage, and a second current electrode. The fourth transistor has a first current electrode coupled to the second current electrode of the third transistor, a control electrode coupled to receive the second bias voltage, and a second current electrode coupled to the fourth node.
摘要:
The present disclosure provides methods and circuits for managing failing sectors in a non-volatile memory. A record address and a read control signal are received, where the record address identifies a location in the non-volatile memory. The record address is compared with a plurality of dead sector addresses, where the dead sector addresses correspond to a subset of sectors located in the non-volatile memory. Data located at the record address is determined to be invalid in response to a combination of a first detection that the record address matches one of the dead sector addresses and a second detection that the read control signal indicates a read operation is requested to be performed on the non-volatile memory.
摘要:
An output circuit, between a first power supply terminal and a second power supply terminal, receives a first logic signal that switches between a first logic state based on a voltage at the first power supply terminal and a second logic state based on a voltage at the second power supply terminal and provides a second logic signal, complementary to the first logic signal. A level translator is in a second power supply domain configured to have a second voltage differential between a third power supply terminal and a fourth power supply terminal, wherein the second voltage differential is greater than the first voltage differential. The level translator is designed so that it may be implemented using a subset of the transistors that have the shortest channel length and narrowest channel width.
摘要:
Methods and systems are disclosed for digital control for regulation of program voltages for non-volatile memory (NVM) systems. The disclosed embodiments dynamically adjust program voltages based upon parameters associated with the cells to be programmed in order to account for IR (current-resistance) voltage drops that occur within program voltage distribution lines. Other voltage variations can also be accounted for with these dynamic adjustments, as well. The parameters for cells to be programmed can include, for example, cell address locations for the cells to be programmed, the number of cells to be programmed, and/or other desired parameters associated with the cells to be programmed. The disclosed embodiments use digital control values obtained from lookup tables based upon the cell parameters to adjust output voltages generated by voltage generation circuit blocks used to program the selected cells thereby tuning the program output voltage level to a predetermined desired level.
摘要:
A method of transferring data from a non-volatile memory (NVM) having a plurality of blocks of an emulated electrically erasable (EEE) memory to a random access memory (RAM) of the EEE includes accessing a plurality of records, a record from each block. A determination is made if any of the data signals of the first data signals are valid and thereby considered valid data signals. If there is only one or none that are valid, the valid data, if any is loaded into RAM and the process continues with subsequent simultaneous accesses. If more than one is valid, then the processes is halted until the RAM is loaded with the valid data, then the method continues with subsequent simultaneous accesses of records.
摘要:
Methods and systems are disclosed for sector-based regulation of program voltages for non-volatile memory (NVM) systems. The disclosed embodiments regulate program voltages for NVM cells based upon feedback signals generated from sector return voltages that are associated with program voltage drivers that are driving program voltages to NVM cells within selected sectors an NVM array. As such, drops in program voltage levels due to IR (current-resistance) voltage losses in program voltage distribution lines are effectively addressed. This sector-based regulation of the program voltage effectively maintains the desired program voltage at the cells being programmed regardless of the sector being accessed for programming and the number of cells being programmed. Sector return voltages can also be used along with local program voltages to provide two-step feedback regulation for the voltage generation circuitry. Test mode configurations can also be provided using test input and/or output pads.
摘要:
Methods and systems are disclosed for sector-based regulation of program voltages for non-volatile memory (NVM) systems. The disclosed embodiments regulate program voltages for NVM cells based upon feedback signals generated from sector return voltages that are associated with program voltage drivers that are driving program voltages to NVM cells within selected sectors an NVM array. As such, drops in program voltage levels due to IR (current-resistance) voltage losses in program voltage distribution lines are effectively addressed. This sector-based regulation of the program voltage effectively maintains the desired program voltage at the cells being programmed regardless of the sector being accessed for programming and the number of cells being programmed. Sector return voltages can also be used along with local program voltages to provide two-step feedback regulation for the voltage generation circuitry. Test mode configurations can also be provided using test input and/or output pads.