M092: Difference between revisions
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It consists of a a 12×10×4 ROM coupled to a 4-bit DAC with internal precision current sources requiring a single precision external reference. | It consists of a a 12×10×4 ROM coupled to a 4-bit DAC with internal precision current sources requiring a single precision external reference. | ||
The ten "memory positions" are scanned by a 4-bit BCD input which may be 0 to -15 V timeslot data or | The ten "memory positions" are scanned by a 4-bit BCD input which may be 0 to -15 V timeslot data or TTL levels or any combination thereof. The twelve "word" lines are low-active TTL inputs. | ||
Intended applications are for encoding of CRT readout directly with electrically alterable information. | Intended applications are for encoding of CRT readout directly with electrically alterable information. | ||
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[[Category:Tektronix-made monolithic integrated circuits]] | [[Category:Tektronix-made monolithic integrated circuits]] | ||
[[Category:Introduced in 1971]] | |||
Latest revision as of 04:21, 20 July 2024
The Tektronix M092 is a legend generator monolithic integrated circuit (aka M92, M92A) designed by Roger McCoy and Mike Metcalf.
It consists of a a 12×10×4 ROM coupled to a 4-bit DAC with internal precision current sources requiring a single precision external reference.
The ten "memory positions" are scanned by a 4-bit BCD input which may be 0 to -15 V timeslot data or TTL levels or any combination thereof. The twelve "word" lines are low-active TTL inputs.
Intended applications are for encoding of CRT readout directly with electrically alterable information.
The base chip is customized for instrument-specific ROM content by metallization layer mask changes.
See the individual "programmed" chips for instrument usage: 155-0086-00, 155-0087-00, 155-0088-00, 155-0104-00, 155-0105-00, 155-0110-00, and 155-0135-00.
