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HCS201 - KEELOQ Code Hopping Encoder

General Description

The HCS201 from Microchip Technology Inc.

is a code hopping encoder designed for secure Remote Keyless Entry (RKE) systems.

The HCS201 utilizes the KEELOQ code hopping technology, incorporating high security, a small package outline and low cost.

Key Features

  • Security.
  • Programmable 28-bit serial number Programmable 64-bit encryption key Each transmission is unique 66-bit transmission code length 32-bit hopping code 34-bit fixed code (28-bit serial number, 4-bit button code, 2-bit status).
  • Encryption keys are read protected.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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HCS201 KEELOQ® Code Hopping Encoder FEATURES Security • • • • • • Programmable 28-bit serial number Programmable 64-bit encryption key Each transmission is unique 66-bit transmission code length 32-bit hopping code 34-bit fixed code (28-bit serial number, 4-bit button code, 2-bit status) • Encryption keys are read protected DESCRIPTION The HCS201 from Microchip Technology Inc. is a code hopping encoder designed for secure Remote Keyless Entry (RKE) systems. The HCS201 utilizes the KEELOQ code hopping technology, incorporating high security, a small package outline and low cost. The HCS201 is a perfect solution for unidirectional remote keyless entry systems and access control systems. PACKAGE TYPES PDIP, SOIC S0 S1 S2 VDDB 1 8 VDD STEP DATA VSS Operating • 3.5V-13V operation (2.0V min.