JPS55101200A - Memory unit - Google Patents
Memory unitInfo
- Publication number
- JPS55101200A JPS55101200A JP797679A JP797679A JPS55101200A JP S55101200 A JPS55101200 A JP S55101200A JP 797679 A JP797679 A JP 797679A JP 797679 A JP797679 A JP 797679A JP S55101200 A JPS55101200 A JP S55101200A
- Authority
- JP
- Japan
- Prior art keywords
- modules
- memory
- memory unit
- module
- test time
- 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
Abstract
PURPOSE: To shorten a test time by writing data onto all memory modules, which are included in a memory unit, simultaneously.
CONSTITUTION: Memory unit 11 is constituted by memory modules 12 and memory module selection circuit 20. Normally, circuit 20 decodes a module address by 21 and makes one of decoded results 24 high-level and sends it to module 12. Meanwhile, at a write test time, all selection signals 23 are made high-level independently of results 24 for the purpose of selecting all modules 12 and are given to all OR circuits 22, thereby setting all modules 12 to a simultaneous writable state.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP797679A JPS55101200A (en) | 1979-01-25 | 1979-01-25 | Memory unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP797679A JPS55101200A (en) | 1979-01-25 | 1979-01-25 | Memory unit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55101200A true JPS55101200A (en) | 1980-08-01 |
Family
ID=11680477
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP797679A Pending JPS55101200A (en) | 1979-01-25 | 1979-01-25 | Memory unit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55101200A (en) |
-
1979
- 1979-01-25 JP JP797679A patent/JPS55101200A/en active Pending
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