JPH0248881U - - Google Patents
Info
- Publication number
- JPH0248881U JPH0248881U JP12719288U JP12719288U JPH0248881U JP H0248881 U JPH0248881 U JP H0248881U JP 12719288 U JP12719288 U JP 12719288U JP 12719288 U JP12719288 U JP 12719288U JP H0248881 U JPH0248881 U JP H0248881U
- Authority
- JP
- Japan
- Prior art keywords
- lsi
- counter
- external terminal
- circuit
- single external
- 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
Links
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Tests Of Electronic Circuits (AREA)
Description
第１図はこの考案に係るＬＳＩ試験回路の一実
施例を示すブロツク図、第２図はこの考案の他の
実施例を示すブロツク図、第３図は従来のＬＳＩ
試験回路を示すブロツク図である。
１０：ＬＳＩ、１１：カウンタ、１２：設定パ
ルス入力端子、１４：セレクタ、１５：複数の観
測点、１６：単一の外部端子。
FIG. 1 is a block diagram showing one embodiment of an LSI test circuit according to this invention, FIG. 2 is a block diagram showing another embodiment of this invention, and FIG. 3 is a block diagram showing a conventional LSI test circuit.
FIG. 3 is a block diagram showing a test circuit. 10: LSI, 11: Counter, 12: Setting pulse input terminal, 14: Selector, 15: Multiple observation points, 16: Single external terminal.
Claims (1)
めの回路であつて、 外部から入力される設定パルスを計数するカウ
ンタと、 前記ＬＳＩにおける複数の観測点にそれぞれ接
続された複数の信号端子及び単一の外部端子を備
え、前記カウンタの計数出力を制御信号として前
記複数の信号端子が前記単一の外部端子に選択的
に切換えられるセレクタと、 を有することを特徴とするＬＳＩ試験回路。[Claims for Utility Model Registration] A circuit for testing the LSI formed within the LSI, comprising a counter that counts setting pulses input from the outside, and a circuit connected to each of a plurality of observation points in the LSI. a selector comprising a plurality of signal terminals and a single external terminal, the plurality of signal terminals being selectively switched to the single external terminal using the counting output of the counter as a control signal. LSI test circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12719288U JPH0248881U (en) | 1988-09-30 | 1988-09-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12719288U JPH0248881U (en) | 1988-09-30 | 1988-09-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0248881U true JPH0248881U (en) | 1990-04-04 |
Family
ID=31379399
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12719288U Pending JPH0248881U (en) | 1988-09-30 | 1988-09-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0248881U (en) |
-
1988
- 1988-09-30 JP JP12719288U patent/JPH0248881U/ja active Pending
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