JPS5710531A - Level conversion circuit - Google Patents

Level conversion circuit

Info

Publication number
JPS5710531A
JPS5710531A JP8382280A JP8382280A JPS5710531A JP S5710531 A JPS5710531 A JP S5710531A JP 8382280 A JP8382280 A JP 8382280A JP 8382280 A JP8382280 A JP 8382280A JP S5710531 A JPS5710531 A JP S5710531A
Authority
JP
Japan
Prior art keywords
level
microcomputer
resistance
conversion circuit
peripheral
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.)
Pending
Application number
JP8382280A
Other languages
Japanese (ja)
Inventor
Minoru Takada
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP8382280A priority Critical patent/JPS5710531A/en
Publication of JPS5710531A publication Critical patent/JPS5710531A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F13/38—Information transfer, e.g. on bus
    • G06F13/40—Bus structure
    • G06F13/4063—Device-to-bus coupling
    • G06F13/4068—Electrical coupling
    • G06F13/4072—Drivers or receivers

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Manipulation Of Pulses (AREA)
  • Logic Circuits (AREA)

Abstract

PURPOSE:To simplify the circuit, by a parallel connection of a diode and a resistance between a signal line and a power supply of a microcomputer and its peripheral device. CONSTITUTION:When data are written in from a microcomputer 11 to a peripheral IC12 at a relation of the power supply voltage VDD>VCC, a switch SWW is turned on. When the microcomputer 11 outputs at ''0'' level, the level of a line 13 is kept to ''0'' level through a resistance R, and when ''1'' level is outputted, the level is clamped to the VCC through a diode D. When the microcomputer 11 reads in data from the peripheral IC12, the switch SWR is turned ON. When the IC12 outputs ''1'' level, the level of the line 13 is increased to the VDD through the resistance R.
JP8382280A 1980-06-20 1980-06-20 Level conversion circuit Pending JPS5710531A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8382280A JPS5710531A (en) 1980-06-20 1980-06-20 Level conversion circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8382280A JPS5710531A (en) 1980-06-20 1980-06-20 Level conversion circuit

Publications (1)

Publication Number Publication Date
JPS5710531A true JPS5710531A (en) 1982-01-20

Family

ID=13813376

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8382280A Pending JPS5710531A (en) 1980-06-20 1980-06-20 Level conversion circuit

Country Status (1)

Country Link
JP (1) JPS5710531A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5958859A (en) * 1982-09-29 1984-04-04 Hitachi Ltd Semiconductor integrated circuit
JPH06129095A (en) * 1992-09-25 1994-05-10 Toda Constr Co Ltd Concrete curing mat
CN101895219A (en) * 2010-07-22 2010-11-24 鞍山起重控制设备有限公司 Pulse trigger type master control signal level converter and application method thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5958859A (en) * 1982-09-29 1984-04-04 Hitachi Ltd Semiconductor integrated circuit
JPH06129095A (en) * 1992-09-25 1994-05-10 Toda Constr Co Ltd Concrete curing mat
CN101895219A (en) * 2010-07-22 2010-11-24 鞍山起重控制设备有限公司 Pulse trigger type master control signal level converter and application method thereof

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