Matches 101 - 150 out of 170 < 1 2 3 4 >
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5590371 Serial communication circuit on an LSI chip and communicating with another microcomputer on the chip  
A serial communication circuit which is so configured that the sub CPU SC determines a timing of bit formats with software, specificially, that the sub CPU SC controls a level of each section or an...
5574923 Method and apparatus for performing bi-endian byte and short accesses in a single-endian microprocessor  
A method and apparatus for performing bi-endian byte and short accesses in a single endian microprocessor. The present invention is used in a microprocessor or in a microprocessor in a computer...
5574926 One-chip microcomputer system having function for substantially correcting contents of program  
A one-chip microcomputer system includes a one-chip microcomputer, a nonvolatile memory which can electrically rewritably store changing data of a program stored in a mask ROM of the one-chip...
5564057 Microprocessor architecture which facilitates input/output utilizing pairs of registers which the same address  
In processors with a reduced set of instructions the operands are derived from registers or as by a directly indicated number from a section of the instruction word, the operation result being...
5555434 Computing device employing a reduction processor and implementing a declarative language  
A computing device implements a functional programming in hardware and operates as a reduction processor. Programs to be evaluated are represented as a directional graph of closures, where each...
5555423 Multi-mode microprocessor having a pin for resetting its register without purging its cache  
In a high performance multi-mode microprocessor, apparatus and a method for switching between modes while selectively maintaining the contents of selected memory elements inside the microprocessor,...
5548766 Microprocessor for selecting data bus terminal width regardless of data transfer mode  
A bus cycle control unit of a microprocessor includes a sizing register for latching designation of a 16-bit data bus, and a bus cycle detector for detecting necessity of an additional bus cycle on...
5537602 Process system for controlling bus system to communicate data between resource and processor  
A processor system includes an external resource, and a main CPU with a built-in bus control mechanism outputting an address bus and control signals and having a function to access the external...
5524265 Architecture of transfer processor  
This invention is a data processor including a data transfer controller. The data transfer controller includes internal and external memory interfaces coupled to internal and external memory,...
5519873 Apparatus for switching digital command execution between a general purpose microprocessor and dedicted execution logic  
Apparatus for transferring control of digital command execution from dedicated digital logic to an off chip microprocessor. A command register receives said digital commands. A decoder connected to...
5517653 Semiconductor integrated circuit device which controls the activation of a microprogram and the start address  
A semiconductor integrated circuit device includes a memory storing a microprogram used for controlling a desired function, a generator for generating an internal microprogram activating signal. A...
5509128 FPGA architecture including direct logic function circuit to I/O interconnections  
A user-programmable FPGA architecture includes a plurality of logic function circuits having inputs and outputs disposed on an integrated circuit. A plurality of input/output (I/O) modules are also...
5504916 Digital signal processor with direct data transfer from external memory  
A digital signal processor having a DMA controller adapted for image processing while transmitting data between an internal memory and an external memory. The DMA controller includes a frame...
5488734 Coupler for providing a high speed interface between a communication controller and a controller extension  
A communications system for transmitting data utilizes one or more picoprocessors located logically out of the main data path for conducting calculations and control functions in a fashion which is...
5442800 Parallel input-output circuit permitting reduce number of pins in a single chip microcomputer  
A single chip microcomputer has a parallel input-output port. The port comprises: an external input shift register with a parallel input port; an external output shift register with a parallel...
5428813 Special function micro controller integrated circuit programmed to selectively perform one of at least two different and unrelated functions  
To maximize the usefulness of micro controllers, a single micro controller is programmed to selectively perform multiple functions based on code segments stored within the micro controller, so that...
5428746 Integrated microprocessor unit generating separate memory and input-output device control signals  
A microprocessor formed on a single integrated circuit chip has separate sets of terminals providing read and write control timing signals to external memory and input-output devices. The memory...
5418976 Processing system having a storage set with data designating operation state from operation states in instruction memory set with application specific block  
The core DSP is extended to a functional module extension, for example having extended memory and input/output circuitry, which extended module is mapped in the address base of the data storage of...
5408678 Interface circuit for high speed data transfer between a peripheral device and a computer  
An interface circuit which is connected between a peripheral device and a computer and which can conduct a data transfer at a higher speed. When a first digital data D 1 is output from a...
5404356 Microcomputer with watchdog timer and I/O port control  
In a semiconductor device such as a one-chip microcomputer having therein a runaway monitor (watch dog timer) there is provided a control unit for directly controlling the state of an input/output...
5396639 One chip microcomputer having programmable I/O terminals programmed according to data stored in nonvolatile memory  
A one-chip microcomputer according to the present invention is provided with an initial reset circuit for producing a first initial reset signal having a first reset period and a second initial...
5379439 Fixed disk drive mounted to printed circuit board  
A fixed disk memory subsystem connects to digital signal buses and a power supply of a host computer and includes a printed circuit board forming a subsystem mounting substrate for mounting and...
5355466 Single chip microcomputer having an address discrimination circuit and an operation mode terminal for protecting the content of internal ROM  
A single chip microcomputer coupled to an external memory includes a latch circuit having a data input connected to an operation mode designation terminal and a toggle input connected to a reset...
5321845 Single-chip microcomputer including non-volatile memory elements  
A logic circuit built in a single-chip microprocessor is configured of electrically-programmable memory elements, and information is written into the memory elements from outside, whereby the logic...
5319794 Device for high-speed processing of information frames  
A signal processing device for performing a predetermined signal processing includes a first storage unit for storing a plurality of frames of information signals, a second storage unit for storing...
5313587 Device for simultaneous data input/output and execution support in digital processors  
A device for simultaneous data input and output and program execution support in digital processors is disclosed. The device includes a plurality of controllable input and output ports for...
5301338 System including central processing unit  
A central processing unit includes a programmable logic array, a timing control unit, a predecoder, a data input/output part, and a processing part. The processing part carries out a predetermined...
5287464 Semiconductor multi-device system with logic means for controlling the operational mode of a set of input/output data bus drivers  
A semiconductor multi-device system incorporated on a single semiconductor chip is disclosed including a central processing unit, a bus, a plurality of peripherals, a plurality of on-chip data bus...
5274786 Microprocessor memory bus interface for inhibiting relatching of row address portions upon subsequent accesses including a same row address portion  
An interface unit which can reduce the hardware cost by interfacing a microprocessor with an inexpensive memory device with a smaller word size without compromising the overall performance. The...
5274770 Flexible register-based I/O microcontroller with single cycle instruction execution  
A new controller transfers data directly between the register of an I/O port and an ALU register in an operation that takes only one phase of a two-phase clock cycle. A transfer between an ALU...
5263141 Microprocessor with an exclusive address terminal for selecting at least one part of a peripheral device  
A digital electronic circuit device includes a CPU provided with multiplexed address/data terminals and exclusive address terminals, an expansion port provided with data terminals and exclusive...
5241681 Computer system having an internal cach microprocessor slowdown circuit providing an external address signal  
A method for slowing down a high speed microprocessor with an internal cache to maintain compatibility with applications software written for slower speed microprocessors. The internal cache of the...
5204962 Processor with preceding operation circuit connected to output of data register  
A microprocessor with an improved register part is disclosed. The register part includes a plurality of registers for holding data and adding circuits connected to the outputs of predetermined two...
5204957 Integrated circuit timer with multiple channels and dedicated service processor  
A timer system comprises multiple channels, each of which is capable of performing input and output timer functions referenced to any of a plurality of timer reference signals. In the preferred...
5187795 Pipelined signal processor having a plurality of bidirectional configurable parallel ports that are configurable as individual ports or as coupled pair of ports  
A signal processor comprising a split pipelined parallel processor which processes data signals from external signal sources and provides signal processing functions utilizing a plurality of data...
5179713 Apparatus for allowing external control of local bus read using zero wait stats input of combined I/O and DRAM controller  
A single semiconductor chip containing both I/O bus controller and DRAM controller functions. A single pin on the chip is used to provide both a zero wait state input to the I/O bus controller and...
5160922 System and method for dynamic avoidance of a simultaneous switching output limitation of a integrated circuit chip  
A system and method for limiting the number of simultaneously switching outputs of an integrated circuit chip to at or below a predetermined limit for the chip during a short, predetermined time...
5101343 Microprocessor with word memory for selectively processing data  
A microprocessor having a word data memory has a CPU data bus, an address register, an incrementer, a first byte data memory circuit, a second byte data memory circuit, a data input switching...
5089951 Microcomputer incorporating memory  
A microcomputer of this invention includes an internal memory. These memories are connected to internal buses and external buses through bi-directional buffers. This microcomputer also includes a...
5034913 Controller integrated circuit  
A controller integrated circuit, such as a cathode ray tube controller, constituting a part of a microcomputer system comprises a plurality of internal registers, a designating register to which...
5021996 Device for use in developing and testing a one-chip microcomputer  
A microcomputer universal package has testing terminals and switching circuitry for selecting first and second operations. In the first operation, as an evaluator type, a test device is connected...
5012404 Integrated circuit remote terminal stores interface for communication between CPU and serial bus  
A simplified bus interface circuit for stores applications includes on-chip pseudo-dual port memory that is user-configurable into receive and transmit portions that are further separable into...
5005121 Integrated CPU and DMA with shared executing unit  
A data processor controller for a microprogramming system is constructed with a single operation execution unit serving both a microprocessor and a peripheral device such as a direct memory access...
4991085 Personal computer bus interface chip with multi-function address relocation pins  
An integrated circuit chip that facilitates connecting peripheral devices to an MCA Micro Channel Architecture bus system. With the present invention manufacturers of adapter boards and cards can...
4979103 Data processing method and apparatus having plural bus interfaces  
A method and apparatus for controlling a plurality of bus interfaces in a system including on one chip a central processing unit and an internal memory. A first operand retrieving operation is...
4964033 Microprocessor controlled interconnection apparatus for very high speed integrated circuits  
Microprocessor controlled apparatus for interconnecting at least two very high speed integrated circuit chips having digital inputs and outputs. Included are a local data bus, a microprocessor unit...
4901276 Portable electronic apparatus having a function of checking for empty areas in which to write data  
The portable electronic apparatus of the invention has a memory for storing externally-supplied data, and a central processing unit (CPU 15) for accessing the memory. The memory is divided into a...
4875154 Microcomputer with disconnected, open, independent, bimemory architecture, allowing large interacting, interconnected multi-microcomputer parallel systems accomodating multiple levels of programmer defined heirarchy  
A Bimemory Independent CPU (BICPU) microcomputer which is comprised of a known CPU chip provided with additional circuitry to enable CPU to interact in a multi BICPU microcomputer system. Each...
4799144 Multi-function communication board for expanding the versatility of a computer  
A single board multiple option card for expanding the versatility of a host computer includes an onboard microprocessor, a digital signal processor and a switched memory device. The switched memory...
4760524 Microcomputer having at least one input-output unit  
A microcomputer includes a central processing unit and at least one input-output (peripheral) unit selected by an address on a single semiconductor chip. The microcomputer further has an address...
Matches 101 - 150 out of 170 < 1 2 3 4 >