Hopping Decoder 14-Pin SOIC N

The HCS370 from Microchip Technology Inc. is a code hopping encoder designed primarily for Remote Keyless Entry (RKE) systems. The device utilizes the KEELOQ code hopping technology, incorporating high security, a small package outline and low cost. The HCS370 is a perfect replacement of fixed code devices in unidirectional remote keyless entry systems and access control systems.

• Two programmable 32-bit serial numbers
• Two programmable 64-bit crypt keys
• Two programmable 60-bit seed values
• Each transmission is unique
• 67/69-bit transmission code length
• 32-bit hopping code
• Crypt keys are read protected
• 2.05-5.5V operation
• Four button inputs
• 15 functions available
• Four selectable baud rates
• Selectable minimum code word completion
• Battery low signal transmitted to receiver
• Nonvolatile synchronization data
• PWM, VPWM, PPM, and Manchester modulation
• Button queue information transmitted
• Dual Encoder functionality
• On-chip EEPROM
• On-chip tuned oscillator (±10% over voltage and temperature)
• Button inputs have internal pull-down resistors
• LED output
• PLL control for ASK and FSK
• Low external component count