JPS641040A - Microcomputer incorporating test circuit - Google Patents

Microcomputer incorporating test circuit

Info

Publication number
JPS641040A
JPS641040A JP62157106A JP15710687A JPS641040A JP S641040 A JPS641040 A JP S641040A JP 62157106 A JP62157106 A JP 62157106A JP 15710687 A JP15710687 A JP 15710687A JP S641040 A JPS641040 A JP S641040A
Authority
JP
Japan
Prior art keywords
test
write
data
instruction data
inputted
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
JP62157106A
Other languages
Japanese (ja)
Other versions
JPH011040A (en
Inventor
Tsutomu Nakamori
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP62-157106A priority Critical patent/JPH011040A/en
Priority claimed from JP62-157106A external-priority patent/JPH011040A/en
Publication of JPS641040A publication Critical patent/JPS641040A/en
Publication of JPH011040A publication Critical patent/JPH011040A/en
Pending legal-status Critical Current

Links

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  • Microcomputers (AREA)
  • Test And Diagnosis Of Digital Computers (AREA)

Abstract

PURPOSE: To perform the independent operation test of a microcomputer by providing a semiconductor chip with an external terminal, through which instruction data for test is inputted from the external, and a control circuit which writes instruction data in a write/read-only storage circuit.
CONSTITUTION: A semiconductor chip 11 is provided with a central operation processing circuit 12 which processes data, a write/read-only storage circuit 13, a control circuit 14 which controls the write processing of instruction data 16 for test, and an external terminal 15 through which data 16 is inputted. Thus, instruction data 16 for test is inputted from the external terminal 15 to rewrite data 16 in the write/read-only storage circuit 14 through the control circuit 14 at any time, and the independent operation test of the highly functional microcomputer is performed without extending test circuits.
COPYRIGHT: (C)1989,JPO&Japio
JP62-157106A 1987-06-24 Microcomputer with built-in test circuit Pending JPH011040A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62-157106A JPH011040A (en) 1987-06-24 Microcomputer with built-in test circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62-157106A JPH011040A (en) 1987-06-24 Microcomputer with built-in test circuit

Publications (2)

Publication Number Publication Date
JPS641040A true JPS641040A (en) 1989-01-05
JPH011040A JPH011040A (en) 1989-01-05

Family

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