JPS6425257A - Memory controller - Google Patents
Memory controllerInfo
- Publication number
- JPS6425257A JPS6425257A JP18160087A JP18160087A JPS6425257A JP S6425257 A JPS6425257 A JP S6425257A JP 18160087 A JP18160087 A JP 18160087A JP 18160087 A JP18160087 A JP 18160087A JP S6425257 A JPS6425257 A JP S6425257A
- Authority
- JP
- Japan
- Prior art keywords
- write
- pulse
- ram
- read
- data
- 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 decrease the number of RAMs by controlling a read pulse and a write pulse to the RAM, and simultaneously read-write from/to one RAM. CONSTITUTION:A write data register 6 holds write data 109 with the timing of a write pulse 105, outputs memory data 118 when it is a write to a RAM 7 with a read signal 114 from a chip select forming circuit 2, and goes to a high impedance when it is a read to RAM 7. The RAM 7 inputs (writes) the memory data by a write enable pulse 112 and a chip selecting pulse 115 when it is a write to a place (storaging place) to be instructed by a memory address 117, outputs (reads) the memory data 118 by the write enable pulse 112 and the chip select pulse 115 at the time of reading.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18160087A JPS6425257A (en) | 1987-07-20 | 1987-07-20 | Memory controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18160087A JPS6425257A (en) | 1987-07-20 | 1987-07-20 | Memory controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6425257A true JPS6425257A (en) | 1989-01-27 |
Family
ID=16103642
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18160087A Pending JPS6425257A (en) | 1987-07-20 | 1987-07-20 | Memory controller |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6425257A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02266446A (en) * | 1989-04-05 | 1990-10-31 | Nec Corp | Memory control circuit |
| JPH04286796A (en) * | 1991-03-18 | 1992-10-12 | Nec Commun Syst Ltd | Semiconductor integration circuit |
-
1987
- 1987-07-20 JP JP18160087A patent/JPS6425257A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02266446A (en) * | 1989-04-05 | 1990-10-31 | Nec Corp | Memory control circuit |
| JPH04286796A (en) * | 1991-03-18 | 1992-10-12 | Nec Commun Syst Ltd | Semiconductor integration circuit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0149049A3 (en) | Data memory with simultaneous write and read | |
| DE3175775D1 (en) | Random access memory arrangements | |
| JPS5727477A (en) | Memory circuit | |
| EP0168232A3 (en) | Apparatus for generating digital timing waveforms | |
| JPS6437125A (en) | Cross coding method and device therefor | |
| JPS6425257A (en) | Memory controller | |
| JPS5693162A (en) | Read/write control circuit of random access memory | |
| JPS55134442A (en) | Data transfer unit | |
| JPS6443894A (en) | Semiconductor memory | |
| JPS6423488A (en) | Memory | |
| JPS5481035A (en) | Ic memory unit | |
| JPS57195374A (en) | Sequential access storage device | |
| JPS5720979A (en) | Memory control system | |
| JPS55115770A (en) | Tone signal production system | |
| JPS5449037A (en) | Timing contol system of memory unit | |
| JPS5387636A (en) | Memory write unit | |
| JPS6450300A (en) | Memory integrated circuit | |
| JPS5432309A (en) | Magnetic data write apparatus | |
| JPS6446376A (en) | Picture signal processor | |
| JPS6429144A (en) | Packet switch using ram arbiter | |
| JPS54132137A (en) | Synchronous buffer memory | |
| JPS6441599A (en) | Time switch circuit | |
| JPS5712496A (en) | Integrated circuit device for memory | |
| JPS57147183A (en) | Shift register | |
| JPS54123841A (en) | Semiconductor integrated memory element |