HCS200/SN

The Microchip Technology HCS200/SN is a specialized integrated circuit designed for secure Remote Keyless Entry (RKE) applications. It utilizes KEELOQ® code hopping technology to provide high security, making it an ideal replacement for fixed code devices in systems such as automotive RKE, alarm systems, immobilizers, and gate/garage door openers.

This device operates over a wide voltage range of 3.5V to 13.0V and features a 66-bit transmission code length, incorporating a 32-bit hopping code, a 28-bit serial number, and 4 information bits. Security is further enhanced by a programmable 64-bit crypt key, which is read-protected. The HCS200/SN supports up to seven functions through its three button inputs and includes features like a low battery indicator and non-volatile synchronization data.

Packaged in an 8-SOIC surface-mount configuration, the HCS200/SN requires minimal external components, primarily buttons and RF circuitry, contributing to a low system cost. Its typical operating supply current is 0.8 mA, and it operates within a temperature range of 0°C to 70°C.

Key technical specifications include a 32-bit data bit count, 3 input lines, and 1 output line. The device is RoHS3 compliant and has an MSL rating of 1.