JPS62198597U - - Google Patents
Info
- Publication number
- JPS62198597U JPS62198597U JP8714886U JP8714886U JPS62198597U JP S62198597 U JPS62198597 U JP S62198597U JP 8714886 U JP8714886 U JP 8714886U JP 8714886 U JP8714886 U JP 8714886U JP S62198597 U JPS62198597 U JP S62198597U
- Authority
- JP
- Japan
- Prior art keywords
- power supply
- static ram
- diode
- external power
- prevent backflow
- 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
- 230000003068 static effect Effects 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 4
Description
第１図は本考案を適用したメモリカセツトの回
路図、第２図は同メモリカセツトにおける電源端
子電圧とチツプセレクト信号入力端子電圧との関
係を示す図、第３図はＳ―ＲＡＭのチツプセレク
ト信号入力端子電圧を制御するための回路の一例
を示す図である。
１…スタテイツクＲＡＭ、２…内部電池、３，
６，７，８…ダイオード、５…外部電源。
Fig. 1 is a circuit diagram of a memory cassette to which the present invention is applied, Fig. 2 is a diagram showing the relationship between the power supply terminal voltage and chip select signal input terminal voltage in the same memory cassette, and Fig. 3 is a diagram showing the S-RAM chip select signal. FIG. 3 is a diagram showing an example of a circuit for controlling signal input terminal voltage. 1...Static RAM, 2...Internal battery, 3,
6, 7, 8...Diode, 5...External power supply.
Claims (1)
を逆流防止して接続するためのダイオードと、 前記外部電源に前記スタテイツクＲＡＭのチツ
プセレクト信号入力端子を逆流防止して接続する
ための直列接続した少なくとも２つのダイオード
とを具えたことを特徴とするメモリ装置。[Scope of Claim for Utility Model Registration] A static RAM, a diode for connecting a power supply terminal of the static RAM to an external power supply to prevent backflow, and a diode for connecting a chip select signal input terminal of the static RAM to the external power supply to prevent backflow. and at least two diodes connected in series for connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8714886U JPH0249040Y2 (en) | 1986-06-10 | 1986-06-10 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8714886U JPH0249040Y2 (en) | 1986-06-10 | 1986-06-10 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62198597U true JPS62198597U (en) | 1987-12-17 |
| JPH0249040Y2 JPH0249040Y2 (en) | 1990-12-21 |
Family
ID=30944106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8714886U Expired JPH0249040Y2 (en) | 1986-06-10 | 1986-06-10 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0249040Y2 (en) |
-
1986
- 1986-06-10 JP JP8714886U patent/JPH0249040Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0249040Y2 (en) | 1990-12-21 |
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