JPS5597641A - Address generator - Google Patents
Address generatorInfo
- Publication number
- JPS5597641A JPS5597641A JP497579A JP497579A JPS5597641A JP S5597641 A JPS5597641 A JP S5597641A JP 497579 A JP497579 A JP 497579A JP 497579 A JP497579 A JP 497579A JP S5597641 A JPS5597641 A JP S5597641A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- address
- memory
- elements
- drain
- 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
Landscapes
- Microcomputers (AREA)
Abstract
PURPOSE: To secure the free setting alteration of the start address for the user by memory circuit and then setting the memory contents to the program counter via the reset signal.
CONSTITUTION: Address memory circuit 25 consists of nonvolatile memory elements M0WM7, and elements M0WM7 comprise transistor Tr26 in which power source VDD is connected to the drain and the gate each plus contact 26 connected to the source and nonvolatile memory element 27 in which the drain, the source and the gate are connected to contact 26, the earth and terminal G7 respectively. Here elements M0WM7 can be written and erased from outside, and memorize at least part of one address in circuit 25 to set the memory contents of circuit 25 to program counter 31 via the reset signal. Thus the user can set and alter the start addresses freely.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP497579A JPS5597641A (en) | 1979-01-19 | 1979-01-19 | Address generator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP497579A JPS5597641A (en) | 1979-01-19 | 1979-01-19 | Address generator |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5597641A true JPS5597641A (en) | 1980-07-25 |
JPS623458B2 JPS623458B2 (en) | 1987-01-24 |
Family
ID=11598590
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP497579A Granted JPS5597641A (en) | 1979-01-19 | 1979-01-19 | Address generator |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5597641A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5839322A (en) * | 1981-08-31 | 1983-03-08 | Nec Home Electronics Ltd | Data processor |
JPS5965356A (en) * | 1982-10-05 | 1984-04-13 | Nec Corp | Single-chip microcomputer |
JPH0256025A (en) * | 1988-12-22 | 1990-02-26 | Seiko Epson Corp | One chip microcomputer |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS51140455A (en) * | 1975-05-29 | 1976-12-03 | Sharp Corp | Program control device |
JPS5396727A (en) * | 1977-02-04 | 1978-08-24 | Nec Corp | State set system |
-
1979
- 1979-01-19 JP JP497579A patent/JPS5597641A/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS51140455A (en) * | 1975-05-29 | 1976-12-03 | Sharp Corp | Program control device |
JPS5396727A (en) * | 1977-02-04 | 1978-08-24 | Nec Corp | State set system |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5839322A (en) * | 1981-08-31 | 1983-03-08 | Nec Home Electronics Ltd | Data processor |
JPS5965356A (en) * | 1982-10-05 | 1984-04-13 | Nec Corp | Single-chip microcomputer |
JPH0256025A (en) * | 1988-12-22 | 1990-02-26 | Seiko Epson Corp | One chip microcomputer |
JPH0567969B2 (en) * | 1988-12-22 | 1993-09-28 | Seiko Epson Corp |
Also Published As
Publication number | Publication date |
---|---|
JPS623458B2 (en) | 1987-01-24 |
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