Abstract: A heating device is capable of efficiently heat a heated body as heating object. The heating device includes a heating body, a power source for supplying a current to the heating body, a current control element controlling current flowing through the heating body, and a heat conductive body to be thermally coupled with the heating body and the current control element for transmitting heat generated by the heating body and heat generated by the current control element to a heating object.

Abstract: Even in such an arrangement in which the throttle valve is operated independently of the engine control system, abnormal engine behavior is ensured to be detected such that a necessary fail-safe operation should be taken. The arrangement of the invention is comprised of the electronically controlled throttle system, engine control system and engine speed monitoring unit, wherein the electronically controlled throttle system is allowed to monitor engine behaviors. Thereby, in the case when the throttle valve is operated independently of the engine control system, if its engine behavior becomes abnormal relative to its drive contents, the engine system senses the abnormality, and takes a fail-safe operation such as to stop operation of the throttle valve and the like.

Abstract: Herein disclosed is a microcomputer MCU adopting the general purpose register method. The microcomputer is enabled to have a small program capacity or a high program memory using efficiency and a low system cost, while enjoying the advantage of simplification of the instruction decoding as in the RISC machine having a fixed length instruction format of the prior art, by adopting a fixed length instruction format having a power of 2 but a smaller bit number than that of the maximum data word length fed to instruction execution means. And, the control of the coded division is executed by noting the code bits.

Abstract: An apparatus of controlling an electronically controllable throttle valve for car has a sensor for detecting the opening of the throttle valve and a microcomputer. A throttle valve opening command value is delivered in the form of a digital signal under the control of the microcomputer. The digital command value signal is converted into an analog signal and on the basis of the analog signal and a detected throttle opening, a motor connected to the throttle valve is driven to control the opening thereof.

Abstract: To provide a low-cost vehicle control system and a car using the system by making radiation of an actuator driver easy and thereby reducing the radiation component cost and moreover, downsizing an electronic control unit and improving the versatility.

Abstract: Even in such an arrangement in which the throttle valve is operated independently of the engine control system, abnormal engine behavior is ensured to be detected such that a necessary fail-safe operation should be taken. The arrangement of the invention is comprised of the electronically controlled throttle system, engine control system and engine speed monitoring unit, wherein the electronically controlled throttle system is allowed to monitor engine behaviors. Thereby, in the case when the throttle valve is operated independently of the engine control system, if its engine behavior becomes abnormal relative to its drive contents, the engine system senses the abnormality, and takes a fail-safe operation such as to stop operation of the throttle valve and the like.

Abstract: A microcomputer MCU adopting the general purpose register method is enabled to have a small program capacity or a high program memory using efficiency and a low system cost, while enjoying the advantage of simplification of the instruction decoding as in the RISC machine having a fixed length instruction format of the prior art, by adopting a fixed length instruction format having a power of 2 but a smaller bit number than that of the maximum data word length fed for instruction execution. And, the control of the coded division is executed by noting the code bits.

Abstract: A data processor comprising: a bus control circuit adapted to be interfaced with a synchronous DRAM which can be accessed in synchronism with a clock signal; a plurality of data processing modules coupled to said bus control circuit for producing data and addresses for accessing a memory; and a clock driver for feeding intrinsic operation clocks to said data processing modules and for feeding the clock signal for accessing said memory in synchronism with the operations of said data processing modules to be operated by the operation clock signals, to the outside.

Abstract: An apparatus of controlling an electronically controllable throttle valve for car has a sensor for detecting the opening of the throttle valve and a microcomputer. A throttle valve opening command value is delivered in the form of a digital signal under the control of the microcomputer. The digital command value signal is converted into an analog signal and on the basis of the analog signal and a detected throttle opening, a motor connected to the throttle valve is driven to control the opening thereof.

Abstract: A microcomputer MCU adopting the general purpose register method is enabled to have a small program capacity or a high program memory using efficiency and a low system cost, while enjoying the advantage of simplification of the instruction decoding as in the RISC machine having a fixed length instruction format of the prior art, by adopting a fixed length instruction format having a power of 2 but a smaller bit number than that of the maximum data word length fed for instruction execution. And, the control of the coded division is executed by noting the code bits.

Abstract: An apparatus of controlling an electronically controllable throttle valve for car has a sensor for detecting the opening of the throttle valve and a microcomputer. A throttle valve opening command value is delivered in the form of a digital signal under the control of the microcomputer. The digital command value signal is converted into an analog signal and on the basis of the analog signal and a detected throttle opening, a motor connected to the throttle valve is driven to control the opening thereof.

Abstract: A microcomputer CMU adopting the general purpose register method is enabled to have a small program capacity or a high program memory using efficiency and a low system cost, while enjoying the advantage of simplification of the instruction decoding as in the RISC machine having a fixed length instruction format of the prior art, by adopting a fixed length instruction format having a power of 2 but a smaller bit number than that of the maximum data word length fed for instruction execution. And, the control of the coded division is executed by noting the code bits.

Abstract: A branch instruction format has different respective field lengths for conditional branch instructions and unconditional branch instructions. A conditional branch instruction has a first bit length and a first area for a displacement designating an address to be jumped, wherein the first area has a second bit length that is smaller than the first bit length. An unconditional branch instruction also has the first bit length, and a second area for a displacement designating an address to be jumped, wherein the second area has a third bit length that is different from the first and second bit lengths.

Abstract: Herein disclosed is a microcomputer MCU adopting the general purpose register method. The microcomputer is enabled to have a small program capacity or a high program memory using efficiency and a low system cost, while enjoying the advantage of simplification of the instruction decoding as in the RISC machine having a fixed length instruction format of the prior art, by adopting a fixed length instruction format having a power of 2 but a smaller bit number than that of the maximum data word length fed to instruction execution means. And, the control of the coded division is executed by noting the code bits.

Abstract: A microcomputer MCU adopting the general purpose register method is enabled to have a small program capacity or a high program memory using efficiency and a low system cost, while enjoying the advantage of simplification of the instruction decoding as in the RISC machine having a fixed length instruction format of the prior art, by adopting a fixed length instruction format having a power of 2 but a smaller bit number than that of the maximum data word length fed for instruction execution. And, the control of the coded division is executed by noting the code bits.

Abstract: A data processor comprising: a bus control circuit adapted to be interfaced with a synchronous DRAM which can be accessed in synchronism with a clock signal; a plurality of data processing modules coupled to said bus control circuit for producing data and addresses for accessing a memory; and a clock driver for feeding intrinsic operation clocks to said data processing modules and for feeding the clock signal for accessing said memory in synchronism with the operations of said data processing modules to be operated by the operation clock signals, to the outside.

Abstract: An image processor which is connected to a system bus that connects a processor for forming graphic command related to image processing to a main memory that holds command and original image data, and draws image on the frame buffer based upon said graphic command from said processor, wherein said graphic processor has a data bus change-over unit which connects said system bus to a first data bus that is connected to a graphic data memory holding said graphic command and said original image data, or connects said first data bus to a frame buffer which holds the data to be displayed. The image processor realizes a high-speed processing at a reduced cost by using a graphic memory bus coupled to a graphic processor.

Abstract: An apparatus of controlling an electronically controllable throttle valve for car has a sensor for detecting the opening of the throttle valve and a microcomputer. A throttle valve opening command value is delivered in the form of a digital signal under the control of the microcomputer. The digital command value signal is converted into an analog signal and on the basis of the analog signal and a detected throttle opening, a motor connected to the throttle valve is driven to control the opening thereof.

Abstract: A data processor comprising: a bus control circuit adapted to be interfaced with a synchronous DRAM which can be accessed in synchronism with a clock signal; a plurality of data processing modules coupled to said bus control circuit for producing data and addresses for accessing a memory; and a clock driver for feeding intrinsic operation clocks to said data processing modules and for feeding the clock signal for accessing said memory in synchronism with the operations of said data processing modules to be operated by the operation clock signals, to the outside.

Abstract: Herein disclosed is a microcomputer MCU adopting the general purpose register method. The microcomputer is enabled to have a small program capacity or a high program memory using efficiency and a low system cost, while enjoying the advantage of simplification of the instruction decoding as in the RISC machine having a fixed length instruction format of the prior art, by adopting a fixed length instruction format having a power of 2 but a smaller bit number than that of the maximum data word length fed to instruction execution means. And, the control of the coded division is executed by noting the code bits.