JPS57168321A - Peripheral chip of microcomputer - Google Patents

Peripheral chip of microcomputer

Info

Publication number
JPS57168321A
JPS57168321A JP57044470A JP4447082A JPS57168321A JP S57168321 A JPS57168321 A JP S57168321A JP 57044470 A JP57044470 A JP 57044470A JP 4447082 A JP4447082 A JP 4447082A JP S57168321 A JPS57168321 A JP S57168321A
Authority
JP
Japan
Prior art keywords
signal
chip
reset
circuit
supplied
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP57044470A
Other languages
Japanese (ja)
Other versions
JPS6229806B2 (en
Inventor
Tsuneo Funabashi
Hideo Nakamura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP57044470A priority Critical patent/JPS57168321A/en
Publication of JPS57168321A publication Critical patent/JPS57168321A/en
Publication of JPS6229806B2 publication Critical patent/JPS6229806B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/24—Resetting means

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)

Abstract

PURPOSE:To attain the input/output control without using any external additional circuit, by applying a reset signal to the bus line of a peripheral chip in accordance with the rise of a power supply and outputting the reset signal to the side of a microcomputer chip. CONSTITUTION:The signal which is supplied to a terminal 1 of a peripheral chip 101 from a power supply E is supplied to a resetting circuit 2 to subject to waveform shaping, then supplied to the prescribed area via a lead wire 3. The output signal of the circuit 2 is led to a bus line 6 via a driver 4 and a transfer gate 5. The signal produced by decoding 8 the address signal sent from a microcomputer chip 100 is applied to the gate 5 along with an AND signal to the input/output strobe signal. Then the reset signal of the circuit 2 is led to the line 6. The reset signal sent from the line 6 is fed to the chip 100 side by a strobe signal and via a buffer 11. As a result, the chip 100 can decide accurately the reset end time, and the input/output control is possible immediately after the end of reset of the chip 101.
JP57044470A 1982-03-23 1982-03-23 Peripheral chip of microcomputer Granted JPS57168321A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57044470A JPS57168321A (en) 1982-03-23 1982-03-23 Peripheral chip of microcomputer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57044470A JPS57168321A (en) 1982-03-23 1982-03-23 Peripheral chip of microcomputer

Publications (2)

Publication Number Publication Date
JPS57168321A true JPS57168321A (en) 1982-10-16
JPS6229806B2 JPS6229806B2 (en) 1987-06-29

Family

ID=12692392

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57044470A Granted JPS57168321A (en) 1982-03-23 1982-03-23 Peripheral chip of microcomputer

Country Status (1)

Country Link
JP (1) JPS57168321A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5251824A (en) * 1975-10-23 1977-04-26 Nec Corp Early-time state setting system
JPS5278333A (en) * 1975-11-05 1977-07-01 Digital Equipment Corp Circuit for starting digital computer
JPS52124836A (en) * 1976-04-13 1977-10-20 Mitsubishi Electric Corp Reset of data processing unit

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5251824A (en) * 1975-10-23 1977-04-26 Nec Corp Early-time state setting system
JPS5278333A (en) * 1975-11-05 1977-07-01 Digital Equipment Corp Circuit for starting digital computer
JPS52124836A (en) * 1976-04-13 1977-10-20 Mitsubishi Electric Corp Reset of data processing unit

Also Published As

Publication number Publication date
JPS6229806B2 (en) 1987-06-29

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