Download Datasheets HCS365 Device 
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Home - KEELOQ Authentication Products - Encoders - HCS365 Device, download datasheet

Download Datasheets HCS365 Device

The HCS365 is a code hopping encoder designed for secure Remote Keyless Entry (RKE) systems. The HCS365 utilizes Microchips patented KEELOQ 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 HCS365 combines a 32-bit hopping code generated by a non-linear encryption algorithm, with a 28/32-bit serial number and 5/3 status bits to create a 69-bit transmission stream. 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 encoder key, serial number, and configuration data are stored in EEPROM, which is not accessible via any external connection. This makes the HCS365 a very secure unit. The HCS365 provides an easy-to-use serial interface for programming the necessary security keys, system parameters, and configuration data. The HCS365 operates over a wide voltage range of 2.0V to 5.5V and has four button inputs in an 8-pin configuration. This allows the system designer the freedom to utilize up to 15 functions. Additional features include a PWM, VPWM, PPM, Manchester encoding, an internal tunable oscillator, Dual encoder operation, PLL interface and a Queue counter.

Datasheet and Other Documentation

Detailed Content

Lit. Number



HCS365 Datasheet


Download HCS365 Datasheet


In Production

Specification Chart

Reception Length Bits

Transmitters Supported

Operating Voltages




2.0V to 5.5V


Additional Features

Dual encoder operation. PWM, Manchester, VPWM, PPM Modulation formats. Button queue bits. RFEN PLL control output for FSK and ASK. 20 bit counter value.

Package Options

8 PDIP(P), 8 SOIC 207mil(SM), 2008-2015 - download datasheets