JPH029938U - - Google Patents
Info
- Publication number
- JPH029938U JPH029938U JP8775688U JP8775688U JPH029938U JP H029938 U JPH029938 U JP H029938U JP 8775688 U JP8775688 U JP 8775688U JP 8775688 U JP8775688 U JP 8775688U JP H029938 U JPH029938 U JP H029938U
- Authority
- JP
- Japan
- Prior art keywords
- request signal
- test
- test request
- section
- main functional
- 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
- 230000010355 oscillation Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Test And Diagnosis Of Digital Computers (AREA)
- Microcomputers (AREA)
Description
第１図は本考案装置の構成図、第２図は本考案
における論理動作を示す説明図である。
１０……主要機能部、２８……発振器、３２…
…ウエイトタイマ、３６……テスト要求信号入力
端子、３４……ノアゲート、３５……反転器。
FIG. 1 is a block diagram of the device of the present invention, and FIG. 2 is an explanatory diagram showing the logical operation of the present invention. 10... Main functional section, 28... Oscillator, 32...
...Wait timer, 36...Test request signal input terminal, 34...NOR gate, 35...Inverter.
Claims (1)
能部と、 該主要機能部を検査するためのテスト部と、 前記主要機能部を作動させるために電源ＯＮと
同時に基準周波数のパルスを連続的に発生開始す
る発振器と、 発振停止状態解除後前記発振器の動作が安定す
るまで主要機能部をＯＦＦ状態に保持するウエイ
トタイマと、 外部から供給されたテスト要求信号を前記テス
ト部へ出力するテスト要求信号入力端子と、 ウエイトタイマが機能している間はテスト要求
信号の入力に拘らず前記テスト部の動作を禁止す
る制御部と、を含むことを特徴とするワンチツプ
マイクロコンピユータ。[Claims for Utility Model Registration] A main functional section consisting of a CPU, a memory, and an input/output device, a test section for testing the main functional section, and a reference frequency that is set at the same time as the power is turned on to operate the main functional section. an oscillator that starts generating pulses continuously, a wait timer that keeps the main functional parts in the OFF state until the operation of the oscillator stabilizes after the oscillation stop state is released, and a test request signal supplied from the outside to the test part. A one-chip microcomputer comprising: a test request signal input terminal for outputting a test request signal to a test request signal input terminal; and a control section that prohibits operation of the test section regardless of input of the test request signal while a wait timer is functioning. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8775688U JPH029938U (en) | 1988-07-01 | 1988-07-01 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8775688U JPH029938U (en) | 1988-07-01 | 1988-07-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH029938U true JPH029938U (en) | 1990-01-23 |
Family
ID=31312353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8775688U Pending JPH029938U (en) | 1988-07-01 | 1988-07-01 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH029938U (en) |
-
1988
- 1988-07-01 JP JP8775688U patent/JPH029938U/ja active Pending