Unlock instant, AI-driven research and patent intelligence for your innovation.

Micro computer

A technology of microcomputer and counter, which is applied in calculation, non-redundancy-based fault handling, hardware monitoring, etc., and can solve problems such as inability to store and access processing units

Inactive Publication Date: 2004-11-03
PANASONIC CORP
View PDF1 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That is, as long as the CPU 10 does not end the memory access to one

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Micro computer
  • Micro computer
  • Micro computer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0094] Below, we refer to the attached Figure 1 Next, the microcomputer related to the embodiment of the present invention will be described.

[0095] (Embodiment 1)

[0096] figure 1 It is a block diagram showing the configuration of the microcomputer according to Embodiment 1 of the present invention. exist figure 1 in, with Figure 13 The same reference numerals indicate the same or corresponding parts. The microcomputer according to the first embodiment is characterized in that a runaway detection control unit 12 is provided. The runaway detection control means 12 detects a runaway state of communication between the CPU 10 and the processing unit A13 or the processing unit B14.

[0097] exist figure 1 Among them, the out-of-control detection control device 12 and the storage access control device 11 pass the address signal A0 for the processing unit A, the data signal D0 for the processing unit A, the chip select signal CS0 for the processing unit A, the processi...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A microcomputer including a runaway detection control unit for monitoring a communication between external processing units that are provided outside the microcomputer, and a memory access control unit. When detecting that the communication between an external processing unit and the CPU gets into a runaway state while the CPU is performing a memory access to the external processing unit in a handshaking method, the runaway detection control unit outputs a pseudo acknowledge signal to the memory access control unit, in place of the normal acknowledge signal. When receiving the pseudo acknowledge signal via the memory access control unit, the CPU switches the memory access method for the external processing unit to the fixed waiting mode.

Description

technical field [0001] The present invention relates to a microcomputer, and particularly relates to detecting an out-of-control state of communication between a central computing processing device and an external processing unit when storing and accessing an external processing unit with a storage function from a central computing processing device in a handshaking mode, and avoiding central computing processing Device runaway microcomputer. Background technique [0002] Next, we use Figure 13 A conventional microcomputer will be described (for example, Patent Document 1: JP-A-4-217035). Figure 13 It is a schematic diagram of the main unit of an existing microcomputer. exist Figure 13 Among them, a microcomputer 1 is provided with a central processing unit (hereinafter referred to as CPU) 10 and a storage access control unit 11 . Also, outside the microcomputer 1, a processing unit A13 having a storage function, a processing unit B14, a processing unit C15, and a proces...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G06F11/30H02H3/05
CPCG06F11/073G06F11/0757
Inventor 伊香和洋岩崎珠树
Owner PANASONIC CORP