JPS5676565A - Integrated circuit - Google Patents

Integrated circuit

Info

Publication number
JPS5676565A
JPS5676565A JP15394179A JP15394179A JPS5676565A JP S5676565 A JPS5676565 A JP S5676565A JP 15394179 A JP15394179 A JP 15394179A JP 15394179 A JP15394179 A JP 15394179A JP S5676565 A JPS5676565 A JP S5676565A
Authority
JP
Japan
Prior art keywords
ram2
rom
rom3
output lines
memory
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
JP15394179A
Other languages
Japanese (ja)
Other versions
JPS6367341B2 (en
Inventor
Akira Takai
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP15394179A priority Critical patent/JPS5676565A/en
Publication of JPS5676565A publication Critical patent/JPS5676565A/en
Publication of JPS6367341B2 publication Critical patent/JPS6367341B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10B—ELECTRONIC MEMORY DEVICES
    • H10B10/00—Static random access memory [SRAM] devices

Abstract

PURPOSE:To readily identify the code corresponding to the content stored in an ROM by ion implanting correspondingly to the content of the read-only memory ROM at a part of the cell of a random access memory RAM. CONSTITUTION:An RAM2 and ROM3 are formed on a chip 1, and a matrix is formed by respective memory cells 4, 5. Address signal lines 6-9 and output lines 11-14 are connected to the RAM2, and address signal lines 16-19 and output lines 21-24 are connected to the ROM3. The hatched part in the memory cell 5 designates ion implanted part. The ions are implanted simultaneously on the load resistance element transistor 28 of the memory cell 4 of the special address (group designated by the address line 6) of the RAM2 corresponding to the ion implanted part in response to the ROM code with the ROM. This can obtained 1, 0, 1, 0 in the output lines 11-14 at the output of the RAM2. This is 5 in hexacode, and can identify that the ROM3 is manufactured in fifth order.
JP15394179A 1979-11-28 1979-11-28 Integrated circuit Granted JPS5676565A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15394179A JPS5676565A (en) 1979-11-28 1979-11-28 Integrated circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15394179A JPS5676565A (en) 1979-11-28 1979-11-28 Integrated circuit

Publications (2)

Publication Number Publication Date
JPS5676565A true JPS5676565A (en) 1981-06-24
JPS6367341B2 JPS6367341B2 (en) 1988-12-26

Family

ID=15573418

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15394179A Granted JPS5676565A (en) 1979-11-28 1979-11-28 Integrated circuit

Country Status (1)

Country Link
JP (1) JPS5676565A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5287332A (en) * 1975-12-29 1977-07-21 Texas Instruments Inc Semiconductor memory* method of programming semiconductor memory and method of manufacturing same
JPS5438764A (en) * 1977-09-01 1979-03-23 Nec Corp Semiconductor device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5287332A (en) * 1975-12-29 1977-07-21 Texas Instruments Inc Semiconductor memory* method of programming semiconductor memory and method of manufacturing same
JPS5438764A (en) * 1977-09-01 1979-03-23 Nec Corp Semiconductor device

Also Published As

Publication number Publication date
JPS6367341B2 (en) 1988-12-26

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