JPS54153560A - Converter between digital and analog - Google Patents
Converter between digital and analogInfo
- Publication number
- JPS54153560A JPS54153560A JP6163878A JP6163878A JPS54153560A JP S54153560 A JPS54153560 A JP S54153560A JP 6163878 A JP6163878 A JP 6163878A JP 6163878 A JP6163878 A JP 6163878A JP S54153560 A JPS54153560 A JP S54153560A
- Authority
- JP
- Japan
- Prior art keywords
- row
- memory cells
- correction
- current
- conductive
- 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 correct the relative accuracy of each row externally, after the end of manufacturing process, by providing the correction circuit with the AD and DA converters having the weighted current row, resistance row or capacitance row.
CONSTITUTION: Non-volatile memory cells are constituted by using P-MOS type Tr for Q61 to Q67 and P-MOS type Tr of floating gate for Q71 to Q77. Q81 to Q87 are analog switches 4 to connect the correction capacitors C/2, C, 2C, 4C to the reference capacitors 28C and 14C preset, and the current, resistor and capacitor for correction are respectively connected to the reference current, reference resistor, and reference capacitor preset depending on the memory state of the memory cells. P1 to P7 are electrodes to write in the memory cells. Further, the analog switches are conductive or non-conductive so that the capacitance viewed from the terminal 60 is 32C and that from the terminal 50 is 16C.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6163878A JPS54153560A (en) | 1978-05-25 | 1978-05-25 | Converter between digital and analog |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6163878A JPS54153560A (en) | 1978-05-25 | 1978-05-25 | Converter between digital and analog |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54153560A true JPS54153560A (en) | 1979-12-03 |
Family
ID=13176941
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6163878A Pending JPS54153560A (en) | 1978-05-25 | 1978-05-25 | Converter between digital and analog |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54153560A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5738025A (en) * | 1980-08-19 | 1982-03-02 | Sanyo Electric Co Ltd | Digital-to-analog converter |
US6100837A (en) * | 1998-01-14 | 2000-08-08 | Mitsubishi Denki Kabushiki Kaisha | A-D converter |
-
1978
- 1978-05-25 JP JP6163878A patent/JPS54153560A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5738025A (en) * | 1980-08-19 | 1982-03-02 | Sanyo Electric Co Ltd | Digital-to-analog converter |
US6100837A (en) * | 1998-01-14 | 2000-08-08 | Mitsubishi Denki Kabushiki Kaisha | A-D converter |
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