JPS648730A - Analog/digital converter - Google Patents
Analog/digital converterInfo
- Publication number
- JPS648730A JPS648730A JP16424487A JP16424487A JPS648730A JP S648730 A JPS648730 A JP S648730A JP 16424487 A JP16424487 A JP 16424487A JP 16424487 A JP16424487 A JP 16424487A JP S648730 A JPS648730 A JP S648730A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- register
- circuit
- conversion
- bit
- 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
Landscapes
- Analogue/Digital Conversion (AREA)
Abstract
PURPOSE:To reduce excess time during the A/D conversion by providing a function capable of switching the resolution of A/D conversion easily in an A/D converter. CONSTITUTION:In giving a control signal 7 to an A/D converter circuit 1 and a register 2, a timing signal outputted from an A/D conversion timing signal output circuit 6 in the circuit 1 is switched. With the control signal 7 at logical 1, signals of T9 and T10 in a shift register 21 are made ineffective and a cycle signal shorter by the timing is fed to the register 2 as an output signal 4. The register 2 receiving the control signal at the same time as the circuit 6 uses a switching circuit to store the signal to 8-bit of low-order LSB and outputs an output signal 5 as a digital signal having the resolution of 8-bit. Through the constitution above, in using the data in the register of 10-bit as the 8-bit data, excess time during the A/D conversion is decreased and instruction steps caused in switching the resolution are saved.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16424487A JPS648730A (en) | 1987-06-30 | 1987-06-30 | Analog/digital converter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16424487A JPS648730A (en) | 1987-06-30 | 1987-06-30 | Analog/digital converter |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS648730A true JPS648730A (en) | 1989-01-12 |
Family
ID=15789415
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16424487A Pending JPS648730A (en) | 1987-06-30 | 1987-06-30 | Analog/digital converter |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS648730A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02202120A (en) * | 1989-01-30 | 1990-08-10 | Nec Ic Microcomput Syst Ltd | Successive approximation type a/d converter |
-
1987
- 1987-06-30 JP JP16424487A patent/JPS648730A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02202120A (en) * | 1989-01-30 | 1990-08-10 | Nec Ic Microcomput Syst Ltd | Successive approximation type a/d converter |
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