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Home - KEELOQ Authentication Products - Encoders - HCS201 Device, download datasheet
Download Datasheets HCS201 Device |
The HCS201 is a code hopping encoder designed for secure Remote Keyless Entry (RKE) systems. The HCS201 utilizes Microchip’s patented KEELOQ® code hopping technology, which incorporates high security, a small package outline and low cost, to make this device a perfect solution for unidirectional remote keyless entry systems and access control systems. The HCS201 combines a 32-bit hopping code generated by a non-linear encryption algorithm, with a 28-bit serial number and 6 status bits to create a 66-bit transmission steam. The length of the transmission eliminates the threat of code scanning and the code hopping mechanism makes each transmission unique, thus rendering code capture and re-send (code grabbing) schemes useless. The encryption key, serial number, and configuration data are stored in EEPROM, which is not accessible via any external connection. This makes the HCS201 a very secure unit. The HCS201 provides an easy-to-use serial interface for programming the necessary security keys, system parameters, and configuration data. The encryption key and code combinations are programmable but read-protected. The HCS201 operates over a wide voltage range of 3.5V to 13V and has three button inputs in an 8-pin configuration, which allows the system designer the freedom to utilize up to 7 functions.
Datasheet and Other Documentation |
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Specification Chart
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Reception Length Bits |
Transmitters Supported |
Operating Voltages |
Functions |
66 |
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3.5V to 13.0V |
7 |
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Additional Features |
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Built in step up regulator, timeout, battery low indicator, Minimum 4 code words |
Package Options |
8 PDIP(P), 8 SOIC 150mil(SN) |
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