JPH02149424U - - Google Patents
Info
- Publication number
- JPH02149424U JPH02149424U JP5718989U JP5718989U JPH02149424U JP H02149424 U JPH02149424 U JP H02149424U JP 5718989 U JP5718989 U JP 5718989U JP 5718989 U JP5718989 U JP 5718989U JP H02149424 U JPH02149424 U JP H02149424U
- Authority
- JP
- Japan
- Prior art keywords
- time constant
- circuit
- constant circuit
- output
- microcomputer
- 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
Links
- 238000010586 diagram Methods 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
Landscapes
- Microcomputers (AREA)
Description
第１図は本考案の一実施例を示す回路図、第２
図及び第３図は第１図の各部波形を示すタイミン
グチヤートである。
１……マイクロコンピユータ、４，７……抵抗
、５，８……コンデンサ、６……スイツチ、９，
１０……シユミツトインバータ、１３，１４……
ＡＮＤゲート、１５……インバータ、１６……プ
ログラムカウンタ。
Figure 1 is a circuit diagram showing one embodiment of the present invention, Figure 2 is a circuit diagram showing an embodiment of the present invention.
3 and 3 are timing charts showing waveforms of various parts in FIG. 1. 1... Microcomputer, 4, 7... Resistor, 5, 8... Capacitor, 6... Switch, 9,
10... Schmitt inverter, 13, 14...
AND gate, 15...inverter, 16...program counter.
Claims (1)
る第１の論理回路と、 マイクロコンピユータのスタンバイ状態を解除
する時、前記第１の時定数回路による積分出力を
デイスチヤージするスイツチ回路と、 前記第１の時定数回路より大なる時定数を有し
、前記所定電圧を積分する第２の時定数回路と、 該第２の時定数回路による積分出力が印加され
る第２の論理回路と、 前記第１及び第２の論理回路による出力レベル
を判別し、判別結果に基づきプログラムカウンタ
のスタートアドレスを制御する判別制御手段と、 を備えたことを特徴とするマイクロコンピユー
タのスタートアドレス制御回路。[Claims for Utility Model Registration] A first time constant circuit that integrates a predetermined voltage, a first logic circuit to which an integrated output from the first time constant circuit is applied, and a microcomputer that releases the standby state. a switch circuit that discharges the integrated output of the first time constant circuit; a second time constant circuit that has a larger time constant than the first time constant circuit and integrates the predetermined voltage; a second logic circuit to which the integral output from the second time constant circuit is applied; and discrimination control for discriminating the output levels of the first and second logic circuits and controlling the start address of the program counter based on the discrimination results; 1. A start address control circuit for a microcomputer, comprising: means;
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989057189U JP2544225Y2 (en) | 1989-05-18 | 1989-05-18 | Microcomputer start address control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989057189U JP2544225Y2 (en) | 1989-05-18 | 1989-05-18 | Microcomputer start address control circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02149424U true JPH02149424U (en) | 1990-12-20 |
| JP2544225Y2 JP2544225Y2 (en) | 1997-08-13 |
Family
ID=31581678
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989057189U Expired - Lifetime JP2544225Y2 (en) | 1989-05-18 | 1989-05-18 | Microcomputer start address control circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2544225Y2 (en) |
-
1989
- 1989-05-18 JP JP1989057189U patent/JP2544225Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP2544225Y2 (en) | 1997-08-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS5974434U (en) | Microcomputer power supply circuit | |
| JPH02149424U (en) | ||
| JPS6394285U (en) | ||
| JPS6185093U (en) | ||
| JPH0628832Y2 (en) | Reset signal generation circuit | |
| JPH02108230U (en) | ||
| JPH01175321U (en) | ||
| JPS5876967U (en) | Vending machine control device | |
| JPH0279628U (en) | ||
| JPH01168878U (en) | ||
| JPH0350247U (en) | ||
| JPS63176394U (en) | ||
| JPS6275521U (en) | ||
| JPH0343041U (en) | ||
| JPH01160378U (en) | ||
| JPS62133432U (en) | ||
| JPH0292535U (en) | ||
| JPH0340508U (en) | ||
| JPH0232235U (en) | ||
| JPS61123644U (en) | ||
| JPS62201860U (en) | ||
| JPH01159425U (en) | ||
| JPS63110945U (en) | ||
| JPH0314818U (en) | ||
| JPS63175867U (en) |