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LS7220 - DIGITAL LOCK FOR AUTOMOTIVE IGNITIONS

Description

The LS7220 is a MOS digital lock circuit.

When wired to a ten-digit keypad, the circuit will recognize one four-digit combination out of a possible 5040 combinations.

Features

  • 5040 Four-Digit Combinations (for a 10 digit Keypad).
  • Combinations are Hard-Wire Programmed.
  • Sense Input Enables Operation.
  • Save Memory Feature for Valet Parking.
  • Convenience Delay Controlled by External Capacitor.
  • Static or Momentary Lock Control Output.
  • Save Memory and Lock Status Outputs.
  • +5V to +18V Operation (Vss - VDD).
  • LS7220 (DIP), LS7220-S (SOIC) - See Figure 1.

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Datasheet preview – LS7220

Datasheet Details

Part number LS7220
Manufacturer LSI Computer Systems
File Size 56.94 KB
Description DIGITAL LOCK FOR AUTOMOTIVE IGNITIONS
Datasheet download datasheet LS7220 Datasheet
Additional preview pages of the LS7220 datasheet.

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Full PDF Text Transcription

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LSI/CSI LS7220 U® L LSI Computer Systems, Inc. 1235 Walt Whitman Road, Melville, NY 11747 (631) 271-0400 FAX (631) 271-0405 A3800 DIGITAL LOCK FOR AUTOMOTIVE IGNITIONS January 2003 FEATURES: • 5040 Four-Digit Combinations (for a 10 digit Keypad) • Combinations are Hard-Wire Programmed • Sense Input Enables Operation • Save Memory Feature for Valet Parking • Convenience Delay Controlled by External Capacitor • Static or Momentary Lock Control Output • Save Memory and Lock Status Outputs • +5V to +18V Operation (Vss - VDD) • LS7220 (DIP), LS7220-S (SOIC) - See Figure 1 DESCRIPTION: The LS7220 is a MOS digital lock circuit. When wired to a ten-digit keypad, the circuit will recognize one four-digit combination out of a possible 5040 combinations.
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